static GstFlowReturn gstbt_audio_synth_create (GstBaseSrc * basesrc, guint64 offset, guint length, GstBuffer ** buffer) { GstBtAudioSynth *src = GSTBT_AUDIO_SYNTH (basesrc); GstBtAudioSynthClass *klass = GSTBT_AUDIO_SYNTH_GET_CLASS (src); GstFlowReturn res; GstBuffer *buf; GstMapInfo info; GstClockTime next_running_time, ticktime; gint64 n_samples; gdouble samples_done; guint samples_per_buffer; gboolean partial_buffer = FALSE; if (G_UNLIKELY (src->eos_reached)) { GST_WARNING_OBJECT (src, "EOS reached"); return GST_FLOW_EOS; } // the amount of samples to produce (handle rounding errors by collecting left over fractions) samples_done = (gdouble) src->running_time * (gdouble) src->info.rate / (gdouble) GST_SECOND; if (!src->reverse) { samples_per_buffer = (guint) (src->samples_per_buffer + (samples_done - (gdouble) src->n_samples)); } else { samples_per_buffer = (guint) (src->samples_per_buffer + ((gdouble) src->n_samples - samples_done)); } GST_DEBUG_OBJECT (src, "samples_done=%lf, src->n_samples=%" G_GUINT64_FORMAT ", src->n_samples_stop=%" G_GUINT64_FORMAT, samples_done, src->n_samples, src->n_samples_stop); GST_DEBUG_OBJECT (src, "samples-per-buffer=%7u (%8.3lf), length=%u", samples_per_buffer, src->samples_per_buffer, length); /* check for eos */ if (src->check_eos) { if (!src->reverse) { partial_buffer = ((src->n_samples_stop >= src->n_samples) && (src->n_samples_stop < src->n_samples + samples_per_buffer)); } else { partial_buffer = ((src->n_samples_stop < src->n_samples) && (src->n_samples_stop >= src->n_samples - samples_per_buffer)); } } if (G_UNLIKELY (partial_buffer)) { /* calculate only partial buffer */ if (!src->reverse) { src->generate_samples_per_buffer = (guint) (src->n_samples_stop - src->n_samples); ticktime = src->stop_time - src->running_time; } else { src->generate_samples_per_buffer = (guint) (src->n_samples - src->n_samples_stop); ticktime = src->running_time - src->stop_time; } if (G_UNLIKELY (!src->generate_samples_per_buffer)) { GST_WARNING_OBJECT (src, "0 samples left -> EOS reached"); src->eos_reached = TRUE; return GST_FLOW_EOS; } n_samples = src->n_samples_stop; src->eos_reached = TRUE; GST_INFO_OBJECT (src, "partial buffer: %u, ticktime: %" GST_TIME_FORMAT, src->generate_samples_per_buffer, GST_TIME_ARGS (ticktime)); } else { /* calculate full buffer */ src->generate_samples_per_buffer = samples_per_buffer; n_samples = src->n_samples + (src->reverse ? (-samples_per_buffer) : samples_per_buffer); ticktime = src->ticktime; } next_running_time = src->running_time + (src->reverse ? (-ticktime) : ticktime); src->ticktime_err_accum = src->ticktime_err_accum + (src->reverse ? (-src->ticktime_err) : src->ticktime_err); res = GST_BASE_SRC_GET_CLASS (basesrc)->alloc (basesrc, src->n_samples, gstbt_audio_synth_calculate_buffer_size (src), &buf); if (G_UNLIKELY (res != GST_FLOW_OK)) { return res; } if (!src->reverse) { GST_BUFFER_TIMESTAMP (buf) = src->running_time + (GstClockTime) src->ticktime_err_accum; GST_BUFFER_DURATION (buf) = next_running_time - src->running_time; GST_BUFFER_OFFSET (buf) = src->n_samples; GST_BUFFER_OFFSET_END (buf) = n_samples; } else { GST_BUFFER_TIMESTAMP (buf) = next_running_time + (GstClockTime) src->ticktime_err_accum; GST_BUFFER_DURATION (buf) = src->running_time - next_running_time; GST_BUFFER_OFFSET (buf) = n_samples; GST_BUFFER_OFFSET_END (buf) = src->n_samples; } if (src->subtick_count >= src->subticks_per_beat) { src->subtick_count = 1; } else { src->subtick_count++; } if (src->discont) { GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT); if (klass->reset) { klass->reset (src); } src->discont = FALSE; } gst_object_sync_values (GST_OBJECT (src), GST_BUFFER_TIMESTAMP (buf)); GST_DEBUG_OBJECT (src, "generate_samples %6u, offset %12" G_GUINT64_FORMAT ", offset_end %12" G_GUINT64_FORMAT " timestamp %" GST_TIME_FORMAT ", duration %" GST_TIME_FORMAT, src->generate_samples_per_buffer, GST_BUFFER_OFFSET (buf), GST_BUFFER_OFFSET_END (buf), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)), GST_TIME_ARGS (GST_BUFFER_DURATION (buf))); src->running_time = next_running_time; src->n_samples = n_samples; if (gst_buffer_map (buf, &info, GST_MAP_WRITE)) { if (!klass->process (src, buf, &info)) { memset (info.data, 0, info.size); GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_GAP); } gst_buffer_unmap (buf, &info); } else { GST_WARNING_OBJECT (src, "unable to map buffer for write"); } *buffer = buf; return GST_FLOW_OK; }
static OSErr data_proc (SGChannel c, Ptr p, long len, long *offset, long chRefCon, TimeValue time, short writeType, long refCon) { GstOSXVideoSrc *self; gint fps_n, fps_d; GstClockTime duration, timestamp, latency; CodecFlags flags; ComponentResult err; PixMapHandle hPixMap; Rect portRect; int pix_rowBytes; void *pix_ptr; int pix_height; int pix_size; self = GST_OSX_VIDEO_SRC (refCon); if (self->buffer != NULL) { gst_buffer_unref (self->buffer); self->buffer = NULL; } err = DecompressSequenceFrameS (self->dec_seq, p, len, 0, &flags, NULL); if (err != noErr) { GST_ERROR_OBJECT (self, "DecompressSequenceFrameS returned %d", (int) err); return err; } hPixMap = GetGWorldPixMap (self->world); LockPixels (hPixMap); GetPortBounds (self->world, &portRect); pix_rowBytes = (int) GetPixRowBytes (hPixMap); pix_ptr = GetPixBaseAddr (hPixMap); pix_height = (portRect.bottom - portRect.top); pix_size = pix_rowBytes * pix_height; GST_DEBUG_OBJECT (self, "num=%5d, height=%d, rowBytes=%d, size=%d", self->seq_num, pix_height, pix_rowBytes, pix_size); fps_n = FRAMERATE; fps_d = 1; duration = gst_util_uint64_scale_int (GST_SECOND, fps_d, fps_n); latency = duration; timestamp = gst_clock_get_time (GST_ELEMENT_CAST (self)->clock); timestamp -= gst_element_get_base_time (GST_ELEMENT_CAST (self)); if (timestamp > latency) timestamp -= latency; else timestamp = 0; self->buffer = gst_buffer_new_and_alloc (pix_size); GST_BUFFER_OFFSET (self->buffer) = self->seq_num; GST_BUFFER_TIMESTAMP (self->buffer) = timestamp; memcpy (GST_BUFFER_DATA (self->buffer), pix_ptr, pix_size); self->seq_num++; UnlockPixels (hPixMap); return noErr; }
GstPadProbeReturn GstEnginePipeline::HandoffCallback(GstPad*, GstPadProbeInfo* info, gpointer self) { GstEnginePipeline* instance = reinterpret_cast<GstEnginePipeline*>(self); GstBuffer* buf = gst_pad_probe_info_get_buffer(info); QList<BufferConsumer*> consumers; { QMutexLocker l(&instance->buffer_consumers_mutex_); consumers = instance->buffer_consumers_; } for (BufferConsumer* consumer : consumers) { gst_buffer_ref(buf); consumer->ConsumeBuffer(buf, instance->id()); } // Calculate the end time of this buffer so we can stop playback if it's // after the end time of this song. if (instance->end_offset_nanosec_ > 0) { quint64 start_time = GST_BUFFER_TIMESTAMP(buf) - instance->segment_start_; quint64 duration = GST_BUFFER_DURATION(buf); quint64 end_time = start_time + duration; if (end_time > instance->end_offset_nanosec_) { if (instance->has_next_valid_url()) { if (instance->next_url_ == instance->url_ && instance->next_beginning_offset_nanosec_ == instance->end_offset_nanosec_) { // The "next" song is actually the next segment of this file - so // cheat and keep on playing, but just tell the Engine we've moved on. instance->end_offset_nanosec_ = instance->next_end_offset_nanosec_; instance->next_url_ = QUrl(); instance->next_beginning_offset_nanosec_ = 0; instance->next_end_offset_nanosec_ = 0; // GstEngine will try to seek to the start of the new section, but // we're already there so ignore it. instance->ignore_next_seek_ = true; emit instance->EndOfStreamReached(instance->id(), true); } else { // We have a next song but we can't cheat, so move to it normally. instance->TransitionToNext(); } } else { // There's no next song emit instance->EndOfStreamReached(instance->id(), false); } } } if (instance->emit_track_ended_on_time_discontinuity_) { if (GST_BUFFER_FLAG_IS_SET(buf, GST_BUFFER_FLAG_DISCONT) || GST_BUFFER_OFFSET(buf) < instance->last_buffer_offset_) { qLog(Debug) << "Buffer discontinuity - emitting EOS"; instance->emit_track_ended_on_time_discontinuity_ = false; emit instance->EndOfStreamReached(instance->id(), true); } } instance->last_buffer_offset_ = GST_BUFFER_OFFSET(buf); return GST_PAD_PROBE_OK; }
static GstFlowReturn gst_wavpack_dec_handle_frame (GstAudioDecoder * bdec, GstBuffer * buf) { GstWavpackDec *dec; GstBuffer *outbuf = NULL; GstFlowReturn ret = GST_FLOW_OK; WavpackHeader wph; int32_t decoded, unpacked_size; gboolean format_changed; gint width, depth, i, j, max; gint32 *dec_data = NULL; guint8 *out_data; GstMapInfo map, omap; dec = GST_WAVPACK_DEC (bdec); g_return_val_if_fail (buf != NULL, GST_FLOW_ERROR); gst_buffer_map (buf, &map, GST_MAP_READ); /* check input, we only accept framed input with complete chunks */ if (map.size < sizeof (WavpackHeader)) goto input_not_framed; if (!gst_wavpack_read_header (&wph, map.data)) goto invalid_header; if (map.size < wph.ckSize + 4 * 1 + 4) goto input_not_framed; if (!(wph.flags & INITIAL_BLOCK)) goto input_not_framed; dec->wv_id.buffer = map.data; dec->wv_id.length = map.size; dec->wv_id.position = 0; /* create a new wavpack context if there is none yet but if there * was already one (i.e. caps were set on the srcpad) check whether * the new one has the same caps */ if (!dec->context) { gchar error_msg[80]; dec->context = WavpackOpenFileInputEx (dec->stream_reader, &dec->wv_id, NULL, error_msg, OPEN_STREAMING, 0); /* expect this to work */ if (!dec->context) { GST_WARNING_OBJECT (dec, "Couldn't decode buffer: %s", error_msg); goto context_failed; } } g_assert (dec->context != NULL); format_changed = (dec->sample_rate != WavpackGetSampleRate (dec->context)) || (dec->channels != WavpackGetNumChannels (dec->context)) || (dec->depth != WavpackGetBytesPerSample (dec->context) * 8) || #ifdef WAVPACK_OLD_API (dec->channel_mask != dec->context->config.channel_mask); #else (dec->channel_mask != WavpackGetChannelMask (dec->context)); #endif if (!gst_pad_has_current_caps (GST_AUDIO_DECODER_SRC_PAD (dec)) || format_changed) { gint channel_mask; dec->sample_rate = WavpackGetSampleRate (dec->context); dec->channels = WavpackGetNumChannels (dec->context); dec->depth = WavpackGetBytesPerSample (dec->context) * 8; #ifdef WAVPACK_OLD_API channel_mask = dec->context->config.channel_mask; #else channel_mask = WavpackGetChannelMask (dec->context); #endif if (channel_mask == 0) channel_mask = gst_wavpack_get_default_channel_mask (dec->channels); dec->channel_mask = channel_mask; gst_wavpack_dec_negotiate (dec); /* send GST_TAG_AUDIO_CODEC and GST_TAG_BITRATE tags before something * is decoded or after the format has changed */ gst_wavpack_dec_post_tags (dec); } /* alloc output buffer */ dec_data = g_malloc (4 * wph.block_samples * dec->channels); /* decode */ decoded = WavpackUnpackSamples (dec->context, dec_data, wph.block_samples); if (decoded != wph.block_samples) goto decode_error; unpacked_size = (dec->width / 8) * wph.block_samples * dec->channels; outbuf = gst_buffer_new_and_alloc (unpacked_size); /* legacy; pass along offset, whatever that might entail */ GST_BUFFER_OFFSET (outbuf) = GST_BUFFER_OFFSET (buf); gst_buffer_map (outbuf, &omap, GST_MAP_WRITE); out_data = omap.data; width = dec->width; depth = dec->depth; max = dec->channels * wph.block_samples; if (width == 8) { gint8 *outbuffer = (gint8 *) out_data; gint *reorder_map = dec->channel_reorder_map; for (i = 0; i < max; i += dec->channels) { for (j = 0; j < dec->channels; j++) *outbuffer++ = (gint8) (dec_data[i + reorder_map[j]]); } } else if (width == 16) { gint16 *outbuffer = (gint16 *) out_data; gint *reorder_map = dec->channel_reorder_map; for (i = 0; i < max; i += dec->channels) { for (j = 0; j < dec->channels; j++) *outbuffer++ = (gint16) (dec_data[i + reorder_map[j]]); } } else if (dec->width == 32) { gint32 *outbuffer = (gint32 *) out_data; gint *reorder_map = dec->channel_reorder_map; if (width != depth) { for (i = 0; i < max; i += dec->channels) { for (j = 0; j < dec->channels; j++) *outbuffer++ = (gint32) (dec_data[i + reorder_map[j]] << (width - depth)); } } else { for (i = 0; i < max; i += dec->channels) { for (j = 0; j < dec->channels; j++) *outbuffer++ = (gint32) (dec_data[i + reorder_map[j]]); } } } else { g_assert_not_reached (); } gst_buffer_unmap (outbuf, &omap); gst_buffer_unmap (buf, &map); buf = NULL; g_free (dec_data); ret = gst_audio_decoder_finish_frame (bdec, outbuf, 1); out: if (buf) gst_buffer_unmap (buf, &map); if (G_UNLIKELY (ret != GST_FLOW_OK)) { GST_DEBUG_OBJECT (dec, "flow: %s", gst_flow_get_name (ret)); } return ret; /* ERRORS */ input_not_framed: { GST_ELEMENT_ERROR (dec, STREAM, DECODE, (NULL), ("Expected framed input")); ret = GST_FLOW_ERROR; goto out; } invalid_header: { GST_ELEMENT_ERROR (dec, STREAM, DECODE, (NULL), ("Invalid wavpack header")); ret = GST_FLOW_ERROR; goto out; } context_failed: { GST_AUDIO_DECODER_ERROR (bdec, 1, LIBRARY, INIT, (NULL), ("error creating Wavpack context"), ret); goto out; } decode_error: { const gchar *reason = "unknown"; if (dec->context) { #ifdef WAVPACK_OLD_API reason = dec->context->error_message; #else reason = WavpackGetErrorMessage (dec->context); #endif } else { reason = "couldn't create decoder context"; } GST_AUDIO_DECODER_ERROR (bdec, 1, STREAM, DECODE, (NULL), ("decoding error: %s", reason), ret); g_free (dec_data); if (ret == GST_FLOW_OK) gst_audio_decoder_finish_frame (bdec, NULL, 1); goto out; } }
static GstFlowReturn gst_jif_mux_recombine_image (GstJifMux * self, GstBuffer ** new_buf, GstBuffer * old_buf) { GstBuffer *buf; GstByteWriter *writer; GstFlowReturn fret; GstJifMuxMarker *m; GList *node; guint size = self->priv->scan_size; gboolean writer_status = TRUE; /* iterate list and collect size */ for (node = self->priv->markers; node; node = g_list_next (node)) { m = (GstJifMuxMarker *) node->data; /* some markers like e.g. SOI are empty */ if (m->size) { size += 2 + m->size; } /* 0xff <marker> */ size += 2; } GST_INFO_OBJECT (self, "old size: %u, new size: %u", GST_BUFFER_SIZE (old_buf), size); /* allocate new buffer */ fret = gst_pad_alloc_buffer_and_set_caps (self->priv->srcpad, GST_BUFFER_OFFSET (old_buf), size, GST_PAD_CAPS (self->priv->srcpad), &buf); if (fret != GST_FLOW_OK) goto no_buffer; /* copy buffer metadata */ gst_buffer_copy_metadata (buf, old_buf, GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS); /* memcopy markers */ writer = gst_byte_writer_new_with_buffer (buf, TRUE); for (node = self->priv->markers; node && writer_status; node = g_list_next (node)) { m = (GstJifMuxMarker *) node->data; writer_status &= gst_byte_writer_put_uint8 (writer, 0xff); writer_status &= gst_byte_writer_put_uint8 (writer, m->marker); GST_DEBUG_OBJECT (self, "marker = %2x, size = %u", m->marker, m->size + 2); if (m->size) { writer_status &= gst_byte_writer_put_uint16_be (writer, m->size + 2); writer_status &= gst_byte_writer_put_data (writer, m->data, m->size); } if (m->marker == SOS) { GST_DEBUG_OBJECT (self, "scan data, size = %u", self->priv->scan_size); writer_status &= gst_byte_writer_put_data (writer, self->priv->scan_data, self->priv->scan_size); } } gst_byte_writer_free (writer); if (!writer_status) { GST_WARNING_OBJECT (self, "Failed to write to buffer, calculated size " "was probably too short"); g_assert_not_reached (); } *new_buf = buf; return GST_FLOW_OK; no_buffer: GST_WARNING_OBJECT (self, "failed to allocate output buffer, flow_ret = %s", gst_flow_get_name (fret)); return fret; }
static void do_perfect_stream_test (guint rate, guint width, gdouble drop_probability, gdouble inject_probability) { GstElement *pipe, *src, *conv, *filter, *injector, *audiorate, *sink; GstMessage *msg; GstCaps *caps; GstPad *srcpad; GList *l, *bufs = NULL; GstClockTime next_time = GST_CLOCK_TIME_NONE; guint64 next_offset = GST_BUFFER_OFFSET_NONE; caps = gst_caps_new_simple ("audio/x-raw-int", "rate", G_TYPE_INT, rate, "width", G_TYPE_INT, width, NULL); GST_INFO ("-------- drop=%.0f%% caps = %" GST_PTR_FORMAT " ---------- ", drop_probability * 100.0, caps); g_assert (drop_probability >= 0.0 && drop_probability <= 1.0); g_assert (inject_probability >= 0.0 && inject_probability <= 1.0); g_assert (width > 0 && (width % 8) == 0); pipe = gst_pipeline_new ("pipeline"); fail_unless (pipe != NULL); src = gst_element_factory_make ("audiotestsrc", "audiotestsrc"); fail_unless (src != NULL); g_object_set (src, "num-buffers", 100, NULL); conv = gst_element_factory_make ("audioconvert", "audioconvert"); fail_unless (conv != NULL); filter = gst_element_factory_make ("capsfilter", "capsfilter"); fail_unless (filter != NULL); g_object_set (filter, "caps", caps, NULL); injector_inject_probability = inject_probability; injector = GST_ELEMENT (g_object_new (test_injector_get_type (), NULL)); srcpad = gst_element_get_static_pad (injector, "src"); fail_unless (srcpad != NULL); gst_pad_add_buffer_probe (srcpad, G_CALLBACK (probe_cb), &drop_probability); gst_object_unref (srcpad); audiorate = gst_element_factory_make ("audiorate", "audiorate"); fail_unless (audiorate != NULL); sink = gst_element_factory_make ("fakesink", "fakesink"); fail_unless (sink != NULL); g_object_set (sink, "signal-handoffs", TRUE, NULL); g_signal_connect (sink, "handoff", G_CALLBACK (got_buf), &bufs); gst_bin_add_many (GST_BIN (pipe), src, conv, filter, injector, audiorate, sink, NULL); gst_element_link_many (src, conv, filter, injector, audiorate, sink, NULL); fail_unless_equals_int (gst_element_set_state (pipe, GST_STATE_PLAYING), GST_STATE_CHANGE_ASYNC); fail_unless_equals_int (gst_element_get_state (pipe, NULL, NULL, -1), GST_STATE_CHANGE_SUCCESS); msg = gst_bus_poll (GST_ELEMENT_BUS (pipe), GST_MESSAGE_EOS | GST_MESSAGE_ERROR, -1); fail_unless_equals_string (GST_MESSAGE_TYPE_NAME (msg), "eos"); for (l = bufs; l != NULL; l = l->next) { GstBuffer *buf = GST_BUFFER (l->data); guint num_samples; fail_unless (GST_BUFFER_TIMESTAMP_IS_VALID (buf)); fail_unless (GST_BUFFER_DURATION_IS_VALID (buf)); fail_unless (GST_BUFFER_OFFSET_IS_VALID (buf)); fail_unless (GST_BUFFER_OFFSET_END_IS_VALID (buf)); GST_LOG ("buffer: ts=%" GST_TIME_FORMAT ", end_ts=%" GST_TIME_FORMAT " off=%" G_GINT64_FORMAT ", end_off=%" G_GINT64_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf) + GST_BUFFER_DURATION (buf)), GST_BUFFER_OFFSET (buf), GST_BUFFER_OFFSET_END (buf)); if (GST_CLOCK_TIME_IS_VALID (next_time)) { fail_unless_equals_uint64 (next_time, GST_BUFFER_TIMESTAMP (buf)); } if (next_offset != GST_BUFFER_OFFSET_NONE) { fail_unless_equals_uint64 (next_offset, GST_BUFFER_OFFSET (buf)); } /* check buffer size for sanity */ fail_unless_equals_int (GST_BUFFER_SIZE (buf) % (width / 8), 0); /* check there is actually as much data as there should be */ num_samples = GST_BUFFER_OFFSET_END (buf) - GST_BUFFER_OFFSET (buf); fail_unless_equals_int (GST_BUFFER_SIZE (buf), num_samples * (width / 8)); next_time = GST_BUFFER_TIMESTAMP (buf) + GST_BUFFER_DURATION (buf); next_offset = GST_BUFFER_OFFSET_END (buf); } gst_message_unref (msg); gst_element_set_state (pipe, GST_STATE_NULL); gst_object_unref (pipe); g_list_foreach (bufs, (GFunc) gst_mini_object_unref, NULL); g_list_free (bufs); gst_caps_unref (caps); }
/** * gst_buffer_create_sub: * @parent: a #GstBuffer. * @offset: the offset into parent #GstBuffer at which the new sub-buffer * begins. * @size: the size of the new #GstBuffer sub-buffer, in bytes. * * Creates a sub-buffer from @parent at @offset and @size. * This sub-buffer uses the actual memory space of the parent buffer. * This function will copy the offset and timestamp fields when the * offset is 0. If not, they will be set to #GST_CLOCK_TIME_NONE and * #GST_BUFFER_OFFSET_NONE. * If @offset equals 0 and @size equals the total size of @buffer, the * duration and offset end fields are also copied. If not they will be set * to #GST_CLOCK_TIME_NONE and #GST_BUFFER_OFFSET_NONE. * * MT safe. * Returns: the new #GstBuffer. * Returns NULL if the arguments were invalid. */ GstBuffer * gst_buffer_create_sub (GstBuffer * buffer, guint offset, guint size) { GstBuffer *subbuffer; GstBuffer *parent; gboolean complete; g_return_val_if_fail (buffer != NULL, NULL); g_return_val_if_fail (buffer->mini_object.refcount > 0, NULL); g_return_val_if_fail (buffer->size >= offset + size, NULL); /* find real parent */ if (GST_IS_SUBBUFFER (buffer)) { parent = buffer->parent; } else { parent = buffer; } gst_buffer_ref (parent); /* create the new buffer */ subbuffer = gst_buffer_new (); subbuffer->parent = parent; GST_BUFFER_FLAG_SET (subbuffer, GST_BUFFER_FLAG_READONLY); GST_CAT_LOG (GST_CAT_BUFFER, "new subbuffer %p (parent %p)", subbuffer, parent); /* set the right values in the child */ GST_BUFFER_DATA (subbuffer) = buffer->data + offset; GST_BUFFER_SIZE (subbuffer) = size; if ((offset == 0) && (size == GST_BUFFER_SIZE (buffer))) { /* copy all the flags except IN_CAPS */ GST_BUFFER_FLAG_SET (subbuffer, GST_BUFFER_FLAGS (buffer)); GST_BUFFER_FLAG_UNSET (subbuffer, GST_BUFFER_FLAG_IN_CAPS); } else { /* copy only PREROLL & GAP flags */ GST_BUFFER_FLAG_SET (subbuffer, (GST_BUFFER_FLAGS (buffer) & (GST_BUFFER_FLAG_PREROLL | GST_BUFFER_FLAG_GAP))); } /* we can copy the timestamp and offset if the new buffer starts at * offset 0 */ if (offset == 0) { GST_BUFFER_TIMESTAMP (subbuffer) = GST_BUFFER_TIMESTAMP (buffer); GST_BUFFER_OFFSET (subbuffer) = GST_BUFFER_OFFSET (buffer); complete = (buffer->size == size); } else { GST_BUFFER_TIMESTAMP (subbuffer) = GST_CLOCK_TIME_NONE; GST_BUFFER_OFFSET (subbuffer) = GST_BUFFER_OFFSET_NONE; complete = FALSE; } if (complete) { GstCaps *caps; /* if we copied the complete buffer we can copy the duration, * offset_end and caps as well */ GST_BUFFER_DURATION (subbuffer) = GST_BUFFER_DURATION (buffer); GST_BUFFER_OFFSET_END (subbuffer) = GST_BUFFER_OFFSET_END (buffer); if ((caps = GST_BUFFER_CAPS (buffer))) gst_caps_ref (caps); GST_BUFFER_CAPS (subbuffer) = caps; } else { GST_BUFFER_DURATION (subbuffer) = GST_CLOCK_TIME_NONE; GST_BUFFER_OFFSET_END (subbuffer) = GST_BUFFER_OFFSET_NONE; GST_BUFFER_CAPS (subbuffer) = NULL; } return subbuffer; }
static GstFlowReturn gst_interleave_collected (GstCollectPads * pads, GstInterleave * self) { guint size; GstBuffer *outbuf; GstFlowReturn ret = GST_FLOW_OK; GSList *collected; guint nsamples; guint ncollected = 0; gboolean empty = TRUE; gint width = self->width / 8; g_return_val_if_fail (self->func != NULL, GST_FLOW_NOT_NEGOTIATED); g_return_val_if_fail (self->width > 0, GST_FLOW_NOT_NEGOTIATED); g_return_val_if_fail (self->channels > 0, GST_FLOW_NOT_NEGOTIATED); g_return_val_if_fail (self->rate > 0, GST_FLOW_NOT_NEGOTIATED); size = gst_collect_pads_available (pads); g_return_val_if_fail (size % width == 0, GST_FLOW_ERROR); GST_DEBUG_OBJECT (self, "Starting to collect %u bytes from %d channels", size, self->channels); nsamples = size / width; ret = gst_pad_alloc_buffer (self->src, GST_BUFFER_OFFSET_NONE, size * self->channels, GST_PAD_CAPS (self->src), &outbuf); if (ret != GST_FLOW_OK) { return ret; } else if (outbuf == NULL || GST_BUFFER_SIZE (outbuf) < size * self->channels) { gst_buffer_unref (outbuf); return GST_FLOW_NOT_NEGOTIATED; } else if (!gst_caps_is_equal (GST_BUFFER_CAPS (outbuf), GST_PAD_CAPS (self->src))) { gst_buffer_unref (outbuf); return GST_FLOW_NOT_NEGOTIATED; } memset (GST_BUFFER_DATA (outbuf), 0, size * self->channels); for (collected = pads->data; collected != NULL; collected = collected->next) { GstCollectData *cdata; GstBuffer *inbuf; guint8 *outdata; cdata = (GstCollectData *) collected->data; inbuf = gst_collect_pads_take_buffer (pads, cdata, size); if (inbuf == NULL) { GST_DEBUG_OBJECT (cdata->pad, "No buffer available"); goto next; } ncollected++; if (GST_BUFFER_FLAG_IS_SET (inbuf, GST_BUFFER_FLAG_GAP)) goto next; empty = FALSE; outdata = GST_BUFFER_DATA (outbuf) + width * GST_INTERLEAVE_PAD_CAST (cdata->pad)->channel; self->func (outdata, GST_BUFFER_DATA (inbuf), self->channels, nsamples); next: if (inbuf) gst_buffer_unref (inbuf); } if (ncollected == 0) goto eos; if (self->segment_pending) { GstEvent *event; event = gst_event_new_new_segment_full (FALSE, self->segment_rate, 1.0, GST_FORMAT_TIME, self->timestamp, -1, self->segment_position); gst_pad_push_event (self->src, event); self->segment_pending = FALSE; self->segment_position = 0; } GST_BUFFER_TIMESTAMP (outbuf) = self->timestamp; GST_BUFFER_OFFSET (outbuf) = self->offset; self->offset += nsamples; self->timestamp = gst_util_uint64_scale_int (self->offset, GST_SECOND, self->rate); GST_BUFFER_DURATION (outbuf) = self->timestamp - GST_BUFFER_TIMESTAMP (outbuf); if (empty) GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_GAP); GST_LOG_OBJECT (self, "pushing outbuf, timestamp %" GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf))); ret = gst_pad_push (self->src, outbuf); return ret; eos: { GST_DEBUG_OBJECT (self, "no data available, must be EOS"); gst_buffer_unref (outbuf); gst_pad_push_event (self->src, gst_event_new_eos ()); return GST_FLOW_UNEXPECTED; } }
static GstFlowReturn gst_wavpack_parse_push_buffer (GstWavpackParse * wvparse, GstBuffer * buf, WavpackHeader * header) { wvparse->current_offset += header->ckSize + 8; wvparse->segment.last_stop = header->block_index; if (wvparse->need_newsegment) { if (gst_wavpack_parse_send_newsegment (wvparse, FALSE)) wvparse->need_newsegment = FALSE; } /* send any queued events */ if (wvparse->queued_events) { GList *l; for (l = wvparse->queued_events; l != NULL; l = l->next) { gst_pad_push_event (wvparse->srcpad, GST_EVENT (l->data)); } g_list_free (wvparse->queued_events); wvparse->queued_events = NULL; } if (wvparse->pending_buffer == NULL) { wvparse->pending_buffer = buf; wvparse->pending_offset = header->block_index; } else if (wvparse->pending_offset == header->block_index) { wvparse->pending_buffer = gst_buffer_join (wvparse->pending_buffer, buf); } else { GST_ERROR ("Got incomplete block, dropping"); gst_buffer_unref (wvparse->pending_buffer); wvparse->pending_buffer = buf; wvparse->pending_offset = header->block_index; } if (!(header->flags & FINAL_BLOCK)) return GST_FLOW_OK; buf = wvparse->pending_buffer; wvparse->pending_buffer = NULL; GST_BUFFER_TIMESTAMP (buf) = gst_util_uint64_scale_int (header->block_index, GST_SECOND, wvparse->samplerate); GST_BUFFER_DURATION (buf) = gst_util_uint64_scale_int (header->block_samples, GST_SECOND, wvparse->samplerate); GST_BUFFER_OFFSET (buf) = header->block_index; GST_BUFFER_OFFSET_END (buf) = header->block_index + header->block_samples; if (wvparse->discont || wvparse->next_block_index != header->block_index) { GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT); wvparse->discont = FALSE; } wvparse->next_block_index = header->block_index + header->block_samples; gst_buffer_set_caps (buf, GST_PAD_CAPS (wvparse->srcpad)); GST_LOG_OBJECT (wvparse, "Pushing buffer with time %" GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf))); return gst_pad_push (wvparse->srcpad, buf); }
static void gst_decklink_src_task (void *priv) { GstDecklinkSrc *decklinksrc = GST_DECKLINK_SRC (priv); GstBuffer *buffer; GstBuffer *audio_buffer; IDeckLinkVideoInputFrame *video_frame; IDeckLinkAudioInputPacket *audio_frame; void *data; int n_samples; GstFlowReturn ret; const GstDecklinkMode *mode; GST_DEBUG_OBJECT (decklinksrc, "task"); g_mutex_lock (decklinksrc->mutex); while (decklinksrc->video_frame == NULL && !decklinksrc->stop) { g_cond_wait (decklinksrc->cond, decklinksrc->mutex); } video_frame = decklinksrc->video_frame; audio_frame = decklinksrc->audio_frame; decklinksrc->video_frame = NULL; decklinksrc->audio_frame = NULL; g_mutex_unlock (decklinksrc->mutex); if (decklinksrc->stop) { GST_DEBUG ("stopping task"); return; } /* warning on dropped frames */ if (decklinksrc->dropped_frames - decklinksrc->dropped_frames_old > 0) { GST_ELEMENT_WARNING (decklinksrc, RESOURCE, READ, ("Dropped %d frame(s), for a total of %d frame(s)", decklinksrc->dropped_frames - decklinksrc->dropped_frames_old, decklinksrc->dropped_frames), (NULL)); decklinksrc->dropped_frames_old = decklinksrc->dropped_frames; } mode = gst_decklink_get_mode (decklinksrc->mode); video_frame->GetBytes (&data); if (decklinksrc->copy_data) { buffer = gst_buffer_new_and_alloc (mode->width * mode->height * 2); memcpy (GST_BUFFER_DATA (buffer), data, mode->width * mode->height * 2); video_frame->Release (); } else { buffer = gst_buffer_new (); GST_BUFFER_SIZE (buffer) = mode->width * mode->height * 2; GST_BUFFER_DATA (buffer) = (guint8 *) data; GST_BUFFER_FREE_FUNC (buffer) = video_frame_free; GST_BUFFER_MALLOCDATA (buffer) = (guint8 *) video_frame; } GST_BUFFER_TIMESTAMP (buffer) = gst_util_uint64_scale_int (decklinksrc->frame_num * GST_SECOND, mode->fps_d, mode->fps_n); GST_BUFFER_DURATION (buffer) = gst_util_uint64_scale_int ((decklinksrc->frame_num + 1) * GST_SECOND, mode->fps_d, mode->fps_n) - GST_BUFFER_TIMESTAMP (buffer); GST_BUFFER_OFFSET (buffer) = decklinksrc->frame_num; GST_BUFFER_OFFSET_END (buffer) = decklinksrc->frame_num; if (decklinksrc->frame_num == 0) { GstEvent *event; gboolean ret; GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT); event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME, 0, GST_CLOCK_TIME_NONE, 0); if (gst_pad_is_linked (decklinksrc->videosrcpad)) { gst_event_ref (event); ret = gst_pad_push_event (decklinksrc->videosrcpad, event); if (!ret) { GST_ERROR_OBJECT (decklinksrc, "new segment event ret=%d", ret); gst_event_unref (event); return; } } else { gst_event_unref (event); } if (gst_pad_is_linked (decklinksrc->audiosrcpad)) { ret = gst_pad_push_event (decklinksrc->audiosrcpad, event); if (!ret) { GST_ERROR_OBJECT (decklinksrc, "new segment event ret=%d", ret); gst_event_unref (event); } } else { gst_event_unref (event); } } if (decklinksrc->video_caps == NULL) { decklinksrc->video_caps = gst_decklink_mode_get_caps (decklinksrc->mode); } gst_buffer_set_caps (buffer, decklinksrc->video_caps); ret = gst_pad_push (decklinksrc->videosrcpad, buffer); if (!(ret == GST_FLOW_OK || ret == GST_FLOW_NOT_LINKED || ret == GST_FLOW_WRONG_STATE)) { GST_ELEMENT_ERROR (decklinksrc, STREAM, FAILED, ("Internal data stream error."), ("stream stopped, reason %s", gst_flow_get_name (ret))); } if (gst_pad_is_linked (decklinksrc->audiosrcpad)) { n_samples = audio_frame->GetSampleFrameCount (); audio_frame->GetBytes (&data); audio_buffer = gst_buffer_new_and_alloc (n_samples * 2 * 2); memcpy (GST_BUFFER_DATA (audio_buffer), data, n_samples * 2 * 2); GST_BUFFER_TIMESTAMP (audio_buffer) = gst_util_uint64_scale_int (decklinksrc->num_audio_samples * GST_SECOND, 1, 48000); GST_BUFFER_DURATION (audio_buffer) = gst_util_uint64_scale_int (n_samples * GST_SECOND, 1, 48000); decklinksrc->num_audio_samples += n_samples; if (decklinksrc->audio_caps == NULL) { decklinksrc->audio_caps = gst_caps_new_simple ("audio/x-raw-int", "endianness", G_TYPE_INT, G_LITTLE_ENDIAN, "signed", G_TYPE_BOOLEAN, TRUE, "depth", G_TYPE_INT, 16, "width", G_TYPE_INT, 16, "channels", G_TYPE_INT, 2, "rate", G_TYPE_INT, 48000, NULL); } gst_buffer_set_caps (audio_buffer, decklinksrc->audio_caps); ret = gst_pad_push (decklinksrc->audiosrcpad, audio_buffer); if (!(ret == GST_FLOW_OK || ret == GST_FLOW_NOT_LINKED || ret == GST_FLOW_WRONG_STATE)) { GST_ELEMENT_ERROR (decklinksrc, STREAM, FAILED, ("Internal data stream error."), ("stream stopped, reason %s", gst_flow_get_name (ret))); } } audio_frame->Release (); }
static GstFlowReturn gst_identity_transform_ip (GstBaseTransform * trans, GstBuffer * buf) { GstFlowReturn ret = GST_FLOW_OK; GstIdentity *identity = GST_IDENTITY (trans); GstClockTime rundts = GST_CLOCK_TIME_NONE; GstClockTime runpts = GST_CLOCK_TIME_NONE; GstClockTime ts, duration, runtimestamp; gsize size; size = gst_buffer_get_size (buf); if (identity->check_imperfect_timestamp) gst_identity_check_imperfect_timestamp (identity, buf); if (identity->check_imperfect_offset) gst_identity_check_imperfect_offset (identity, buf); /* update prev values */ identity->prev_timestamp = GST_BUFFER_TIMESTAMP (buf); identity->prev_duration = GST_BUFFER_DURATION (buf); identity->prev_offset_end = GST_BUFFER_OFFSET_END (buf); identity->prev_offset = GST_BUFFER_OFFSET (buf); if (identity->error_after >= 0) { identity->error_after--; if (identity->error_after == 0) goto error_after; } if (identity->drop_probability > 0.0) { if ((gfloat) (1.0 * rand () / (RAND_MAX)) < identity->drop_probability) goto dropped; } if (identity->dump) { GstMapInfo info; gst_buffer_map (buf, &info, GST_MAP_READ); gst_util_dump_mem (info.data, info.size); gst_buffer_unmap (buf, &info); } if (!identity->silent) { gst_identity_update_last_message_for_buffer (identity, "chain", buf, size); } if (identity->datarate > 0) { GstClockTime time = gst_util_uint64_scale_int (identity->offset, GST_SECOND, identity->datarate); GST_BUFFER_PTS (buf) = GST_BUFFER_DTS (buf) = time; GST_BUFFER_DURATION (buf) = size * GST_SECOND / identity->datarate; } if (identity->signal_handoffs) g_signal_emit (identity, gst_identity_signals[SIGNAL_HANDOFF], 0, buf); if (trans->segment.format == GST_FORMAT_TIME) { rundts = gst_segment_to_running_time (&trans->segment, GST_FORMAT_TIME, GST_BUFFER_DTS (buf)); runpts = gst_segment_to_running_time (&trans->segment, GST_FORMAT_TIME, GST_BUFFER_PTS (buf)); } if (GST_CLOCK_TIME_IS_VALID (rundts)) runtimestamp = rundts; else if (GST_CLOCK_TIME_IS_VALID (runpts)) runtimestamp = runpts; else runtimestamp = 0; ret = gst_identity_do_sync (identity, runtimestamp); identity->offset += size; if (identity->sleep_time && ret == GST_FLOW_OK) g_usleep (identity->sleep_time); if (identity->single_segment && (trans->segment.format == GST_FORMAT_TIME) && (ret == GST_FLOW_OK)) { GST_BUFFER_DTS (buf) = rundts; GST_BUFFER_PTS (buf) = runpts; GST_BUFFER_OFFSET (buf) = GST_CLOCK_TIME_NONE; GST_BUFFER_OFFSET_END (buf) = GST_CLOCK_TIME_NONE; } return ret; /* ERRORS */ error_after: { GST_ELEMENT_ERROR (identity, CORE, FAILED, (_("Failed after iterations as requested.")), (NULL)); return GST_FLOW_ERROR; } dropped: { if (!identity->silent) { gst_identity_update_last_message_for_buffer (identity, "dropping", buf, size); } ts = GST_BUFFER_TIMESTAMP (buf); if (GST_CLOCK_TIME_IS_VALID (ts)) { duration = GST_BUFFER_DURATION (buf); gst_pad_push_event (GST_BASE_TRANSFORM_SRC_PAD (identity), gst_event_new_gap (ts, duration)); } /* return DROPPED to basetransform. */ return GST_BASE_TRANSFORM_FLOW_DROPPED; } }
static GstFlowReturn gst_vdp_mpeg_dec_decode (GstVdpMpegDec * mpeg_dec, GstClockTime timestamp, gint64 size) { VdpPictureInfoMPEG1Or2 *info; GstBuffer *buffer; GstBuffer *outbuf; VdpVideoSurface surface; GstVdpDevice *device; VdpBitstreamBuffer vbit[1]; VdpStatus status; info = &mpeg_dec->vdp_info; if (info->picture_coding_type != B_FRAME) { if (info->backward_reference != VDP_INVALID_HANDLE) { gst_buffer_ref (mpeg_dec->b_buffer); gst_vdp_mpeg_dec_push_video_buffer (mpeg_dec, GST_VDP_VIDEO_BUFFER (mpeg_dec->b_buffer)); } if (info->forward_reference != VDP_INVALID_HANDLE) { gst_buffer_unref (mpeg_dec->f_buffer); info->forward_reference = VDP_INVALID_HANDLE; } info->forward_reference = info->backward_reference; mpeg_dec->f_buffer = mpeg_dec->b_buffer; info->backward_reference = VDP_INVALID_HANDLE; } if (gst_vdp_mpeg_dec_alloc_buffer (mpeg_dec, &outbuf) != GST_FLOW_OK) { gst_adapter_clear (mpeg_dec->adapter); return GST_FLOW_ERROR; } device = GST_VDP_VIDEO_BUFFER (outbuf)->device; if (info->forward_reference != VDP_INVALID_HANDLE && info->picture_coding_type != I_FRAME) gst_vdp_video_buffer_add_reference (GST_VDP_VIDEO_BUFFER (outbuf), GST_VDP_VIDEO_BUFFER (mpeg_dec->f_buffer)); if (info->backward_reference != VDP_INVALID_HANDLE && info->picture_coding_type == B_FRAME) gst_vdp_video_buffer_add_reference (GST_VDP_VIDEO_BUFFER (outbuf), GST_VDP_VIDEO_BUFFER (mpeg_dec->b_buffer)); GST_BUFFER_TIMESTAMP (outbuf) = timestamp; GST_BUFFER_DURATION (outbuf) = mpeg_dec->duration; GST_BUFFER_OFFSET (outbuf) = mpeg_dec->frame_nr; GST_BUFFER_SIZE (outbuf) = size; if (info->picture_coding_type == I_FRAME) GST_BUFFER_FLAG_UNSET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT); else GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT); if (info->top_field_first) GST_BUFFER_FLAG_SET (outbuf, GST_VIDEO_BUFFER_TFF); else GST_BUFFER_FLAG_UNSET (outbuf, GST_VIDEO_BUFFER_TFF); buffer = gst_adapter_take_buffer (mpeg_dec->adapter, gst_adapter_available (mpeg_dec->adapter)); surface = GST_VDP_VIDEO_BUFFER (outbuf)->surface; vbit[0].struct_version = VDP_BITSTREAM_BUFFER_VERSION; vbit[0].bitstream = GST_BUFFER_DATA (buffer); vbit[0].bitstream_bytes = GST_BUFFER_SIZE (buffer); status = device->vdp_decoder_render (mpeg_dec->decoder, surface, (VdpPictureInfo *) info, 1, vbit); gst_buffer_unref (buffer); info->slice_count = 0; if (status != VDP_STATUS_OK) { GST_ELEMENT_ERROR (mpeg_dec, RESOURCE, READ, ("Could not decode"), ("Error returned from vdpau was: %s", device->vdp_get_error_string (status))); gst_buffer_unref (GST_BUFFER (outbuf)); return GST_FLOW_ERROR; } if (info->picture_coding_type == B_FRAME) { gst_vdp_mpeg_dec_push_video_buffer (mpeg_dec, GST_VDP_VIDEO_BUFFER (outbuf)); } else { info->backward_reference = surface; mpeg_dec->b_buffer = GST_BUFFER (outbuf); } return GST_FLOW_OK; }
static GstFlowReturn gst_identity_transform_ip (GstBaseTransform * trans, GstBuffer * buf) { GstFlowReturn ret = GST_FLOW_OK; GstIdentity *identity = GST_IDENTITY (trans); GstClockTime runtimestamp = G_GINT64_CONSTANT (0); gsize size; size = gst_buffer_get_size (buf); if (identity->check_imperfect_timestamp) gst_identity_check_imperfect_timestamp (identity, buf); if (identity->check_imperfect_offset) gst_identity_check_imperfect_offset (identity, buf); /* update prev values */ identity->prev_timestamp = GST_BUFFER_TIMESTAMP (buf); identity->prev_duration = GST_BUFFER_DURATION (buf); identity->prev_offset_end = GST_BUFFER_OFFSET_END (buf); identity->prev_offset = GST_BUFFER_OFFSET (buf); if (identity->error_after >= 0) { identity->error_after--; if (identity->error_after == 0) goto error_after; } if (identity->drop_probability > 0.0) { if ((gfloat) (1.0 * rand () / (RAND_MAX)) < identity->drop_probability) goto dropped; } if (identity->dump) { GstMapInfo info; gst_buffer_map (buf, &info, GST_MAP_READ); gst_util_dump_mem (info.data, info.size); gst_buffer_unmap (buf, &info); } if (!identity->silent) { gst_identity_update_last_message_for_buffer (identity, "chain", buf, size); } if (identity->datarate > 0) { GstClockTime time = gst_util_uint64_scale_int (identity->offset, GST_SECOND, identity->datarate); GST_BUFFER_PTS (buf) = GST_BUFFER_DTS (buf) = time; GST_BUFFER_DURATION (buf) = size * GST_SECOND / identity->datarate; } if (identity->signal_handoffs) g_signal_emit (identity, gst_identity_signals[SIGNAL_HANDOFF], 0, buf); if (trans->segment.format == GST_FORMAT_TIME) runtimestamp = gst_segment_to_running_time (&trans->segment, GST_FORMAT_TIME, GST_BUFFER_TIMESTAMP (buf)); if ((identity->sync) && (trans->segment.format == GST_FORMAT_TIME)) { GstClock *clock; GST_OBJECT_LOCK (identity); if ((clock = GST_ELEMENT (identity)->clock)) { GstClockReturn cret; GstClockTime timestamp; timestamp = runtimestamp + GST_ELEMENT (identity)->base_time; /* save id if we need to unlock */ identity->clock_id = gst_clock_new_single_shot_id (clock, timestamp); GST_OBJECT_UNLOCK (identity); cret = gst_clock_id_wait (identity->clock_id, NULL); GST_OBJECT_LOCK (identity); if (identity->clock_id) { gst_clock_id_unref (identity->clock_id); identity->clock_id = NULL; } if (cret == GST_CLOCK_UNSCHEDULED) ret = GST_FLOW_EOS; } GST_OBJECT_UNLOCK (identity); } identity->offset += size; if (identity->sleep_time && ret == GST_FLOW_OK) g_usleep (identity->sleep_time); if (identity->single_segment && (trans->segment.format == GST_FORMAT_TIME) && (ret == GST_FLOW_OK)) { GST_BUFFER_PTS (buf) = GST_BUFFER_DTS (buf) = runtimestamp; GST_BUFFER_OFFSET (buf) = GST_CLOCK_TIME_NONE; GST_BUFFER_OFFSET_END (buf) = GST_CLOCK_TIME_NONE; } return ret; /* ERRORS */ error_after: { GST_ELEMENT_ERROR (identity, CORE, FAILED, (_("Failed after iterations as requested.")), (NULL)); return GST_FLOW_ERROR; } dropped: { if (!identity->silent) { gst_identity_update_last_message_for_buffer (identity, "dropping", buf, size); } /* return DROPPED to basetransform. */ return GST_BASE_TRANSFORM_FLOW_DROPPED; } }
static GstFlowReturn gst_inter_video_src_create (GstBaseSrc * src, guint64 offset, guint size, GstBuffer ** buf) { GstInterVideoSrc *intervideosrc = GST_INTER_VIDEO_SRC (src); GstBuffer *buffer; GST_DEBUG_OBJECT (intervideosrc, "create"); buffer = NULL; g_mutex_lock (&intervideosrc->surface->mutex); if (intervideosrc->surface->video_buffer) { buffer = gst_buffer_ref (intervideosrc->surface->video_buffer); intervideosrc->surface->video_buffer_count++; if (intervideosrc->surface->video_buffer_count >= 30) { gst_buffer_unref (intervideosrc->surface->video_buffer); intervideosrc->surface->video_buffer = NULL; } } g_mutex_unlock (&intervideosrc->surface->mutex); if (buffer == NULL) { GstMapInfo map; buffer = gst_buffer_new_and_alloc (GST_VIDEO_INFO_SIZE (&intervideosrc->info)); gst_buffer_map (buffer, &map, GST_MAP_WRITE); memset (map.data, 16, GST_VIDEO_INFO_COMP_STRIDE (&intervideosrc->info, 0) * GST_VIDEO_INFO_COMP_HEIGHT (&intervideosrc->info, 0)); memset (map.data + GST_VIDEO_INFO_COMP_OFFSET (&intervideosrc->info, 1), 128, 2 * GST_VIDEO_INFO_COMP_STRIDE (&intervideosrc->info, 1) * GST_VIDEO_INFO_COMP_HEIGHT (&intervideosrc->info, 1)); gst_buffer_unmap (buffer, &map); } buffer = gst_buffer_make_writable (buffer); GST_BUFFER_TIMESTAMP (buffer) = gst_util_uint64_scale_int (GST_SECOND * intervideosrc->n_frames, GST_VIDEO_INFO_FPS_D (&intervideosrc->info), GST_VIDEO_INFO_FPS_N (&intervideosrc->info)); GST_DEBUG_OBJECT (intervideosrc, "create ts %" GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer))); GST_BUFFER_DURATION (buffer) = gst_util_uint64_scale_int (GST_SECOND * (intervideosrc->n_frames + 1), GST_VIDEO_INFO_FPS_D (&intervideosrc->info), GST_VIDEO_INFO_FPS_N (&intervideosrc->info)) - GST_BUFFER_TIMESTAMP (buffer); GST_BUFFER_OFFSET (buffer) = intervideosrc->n_frames; GST_BUFFER_OFFSET_END (buffer) = -1; GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_DISCONT); if (intervideosrc->n_frames == 0) { GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT); } intervideosrc->n_frames++; *buf = buffer; return GST_FLOW_OK; }
static GstFlowReturn gst_fake_sink_render (GstBaseSink * bsink, GstBuffer * buf) { GstFakeSink *sink = GST_FAKE_SINK_CAST (bsink); if (sink->num_buffers_left == 0) goto eos; if (sink->num_buffers_left != -1) sink->num_buffers_left--; if (!sink->silent) { gchar dts_str[64], pts_str[64], dur_str[64]; gchar flag_str[100]; GST_OBJECT_LOCK (sink); g_free (sink->last_message); if (GST_BUFFER_DTS (buf) != GST_CLOCK_TIME_NONE) { g_snprintf (dts_str, sizeof (dts_str), "%" GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_DTS (buf))); } else { g_strlcpy (dts_str, "none", sizeof (dts_str)); } if (GST_BUFFER_PTS (buf) != GST_CLOCK_TIME_NONE) { g_snprintf (pts_str, sizeof (pts_str), "%" GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_PTS (buf))); } else { g_strlcpy (pts_str, "none", sizeof (pts_str)); } if (GST_BUFFER_DURATION (buf) != GST_CLOCK_TIME_NONE) { g_snprintf (dur_str, sizeof (dur_str), "%" GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_DURATION (buf))); } else { g_strlcpy (dur_str, "none", sizeof (dur_str)); } { const char *flag_list[15] = { "", "", "", "", "live", "decode-only", "discont", "resync", "corrupted", "marker", "header", "gap", "droppable", "delta-unit", "in-caps" }; int i; char *end = flag_str; end[0] = '\0'; for (i = 0; i < G_N_ELEMENTS (flag_list); i++) { if (GST_MINI_OBJECT_CAST (buf)->flags & (1 << i)) { strcpy (end, flag_list[i]); end += strlen (end); end[0] = ' '; end[1] = '\0'; end++; } } } sink->last_message = g_strdup_printf ("chain ******* (%s:%s) (%u bytes, dts: %s, pts: %s" ", duration: %s, offset: %" G_GINT64_FORMAT ", offset_end: %" G_GINT64_FORMAT ", flags: %08x %s) %p", GST_DEBUG_PAD_NAME (GST_BASE_SINK_CAST (sink)->sinkpad), (guint) gst_buffer_get_size (buf), dts_str, pts_str, dur_str, GST_BUFFER_OFFSET (buf), GST_BUFFER_OFFSET_END (buf), GST_MINI_OBJECT_CAST (buf)->flags, flag_str, buf); GST_OBJECT_UNLOCK (sink); gst_fake_sink_notify_last_message (sink); } if (sink->signal_handoffs) g_signal_emit (sink, gst_fake_sink_signals[SIGNAL_HANDOFF], 0, buf, bsink->sinkpad); if (sink->dump) { GstMapInfo info; gst_buffer_map (buf, &info, GST_MAP_READ); gst_util_dump_mem (info.data, info.size); gst_buffer_unmap (buf, &info); } if (sink->num_buffers_left == 0) goto eos; return GST_FLOW_OK; /* ERRORS */ eos: { GST_DEBUG_OBJECT (sink, "we are EOS"); return GST_FLOW_EOS; } }
static GstFlowReturn gst_rtp_amr_pay_handle_buffer (GstRTPBasePayload * basepayload, GstBuffer * buffer) { GstRtpAMRPay *rtpamrpay; const gint *frame_size; GstFlowReturn ret; guint payload_len; GstMapInfo map; GstBuffer *outbuf; guint8 *payload, *ptr, *payload_amr; GstClockTime timestamp, duration; guint packet_len, mtu; gint i, num_packets, num_nonempty_packets; gint amr_len; gboolean sid = FALSE; GstRTPBuffer rtp = { NULL }; rtpamrpay = GST_RTP_AMR_PAY (basepayload); mtu = GST_RTP_BASE_PAYLOAD_MTU (rtpamrpay); gst_buffer_map (buffer, &map, GST_MAP_READ); timestamp = GST_BUFFER_TIMESTAMP (buffer); duration = GST_BUFFER_DURATION (buffer); /* setup frame size pointer */ if (rtpamrpay->mode == GST_RTP_AMR_P_MODE_NB) frame_size = nb_frame_size; else frame_size = wb_frame_size; GST_DEBUG_OBJECT (basepayload, "got %" G_GSIZE_FORMAT " bytes", map.size); /* FIXME, only * octet aligned, no interleaving, single channel, no CRC, * no robust-sorting. To fix this you need to implement the downstream * negotiation function. */ /* first count number of packets and total amr frame size */ amr_len = num_packets = num_nonempty_packets = 0; for (i = 0; i < map.size; i++) { guint8 FT; gint fr_size; FT = (map.data[i] & 0x78) >> 3; fr_size = frame_size[FT]; GST_DEBUG_OBJECT (basepayload, "frame type %d, frame size %d", FT, fr_size); /* FIXME, we don't handle this yet.. */ if (fr_size <= 0) goto wrong_size; if (fr_size == 5) sid = TRUE; amr_len += fr_size; num_nonempty_packets++; num_packets++; i += fr_size; } if (amr_len > map.size) goto incomplete_frame; /* we need one extra byte for the CMR, the ToC is in the input * data */ payload_len = map.size + 1; /* get packet len to check against MTU */ packet_len = gst_rtp_buffer_calc_packet_len (payload_len, 0, 0); if (packet_len > mtu) goto too_big; /* now alloc output buffer */ outbuf = gst_rtp_buffer_new_allocate (payload_len, 0, 0); gst_rtp_buffer_map (outbuf, GST_MAP_WRITE, &rtp); /* copy timestamp */ GST_BUFFER_TIMESTAMP (outbuf) = timestamp; if (duration != GST_CLOCK_TIME_NONE) GST_BUFFER_DURATION (outbuf) = duration; else { GST_BUFFER_DURATION (outbuf) = num_packets * 20 * GST_MSECOND; } if (GST_BUFFER_IS_DISCONT (buffer)) { GST_DEBUG_OBJECT (basepayload, "discont, setting marker bit"); GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT); gst_rtp_buffer_set_marker (&rtp, TRUE); gst_rtp_amr_pay_recalc_rtp_time (rtpamrpay, timestamp); } if (G_UNLIKELY (sid)) { gst_rtp_amr_pay_recalc_rtp_time (rtpamrpay, timestamp); } /* perfect rtptime */ if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (rtpamrpay->first_ts))) { rtpamrpay->first_ts = timestamp; rtpamrpay->first_rtp_time = rtpamrpay->next_rtp_time; } GST_BUFFER_OFFSET (outbuf) = rtpamrpay->next_rtp_time; rtpamrpay->next_rtp_time += (num_packets * 160) << (rtpamrpay->mode == GST_RTP_AMR_P_MODE_WB); /* get payload, this is now writable */ payload = gst_rtp_buffer_get_payload (&rtp); /* 0 1 2 3 4 5 6 7 * +-+-+-+-+-+-+-+-+ * | CMR |R|R|R|R| * +-+-+-+-+-+-+-+-+ */ payload[0] = 0xF0; /* CMR, no specific mode requested */ /* this is where we copy the AMR data, after num_packets FTs and the * CMR. */ payload_amr = payload + num_packets + 1; /* copy data in payload, first we copy all the FTs then all * the AMR data. The last FT has to have the F flag cleared. */ ptr = map.data; for (i = 1; i <= num_packets; i++) { guint8 FT; gint fr_size; /* 0 1 2 3 4 5 6 7 * +-+-+-+-+-+-+-+-+ * |F| FT |Q|P|P| more FT... * +-+-+-+-+-+-+-+-+ */ FT = (*ptr & 0x78) >> 3; fr_size = frame_size[FT]; if (i == num_packets) /* last packet, clear F flag */ payload[i] = *ptr & 0x7f; else /* set F flag */ payload[i] = *ptr | 0x80; memcpy (payload_amr, &ptr[1], fr_size); /* all sizes are > 0 since we checked for that above */ ptr += fr_size + 1; payload_amr += fr_size; } gst_buffer_unmap (buffer, &map); gst_buffer_unref (buffer); gst_rtp_buffer_unmap (&rtp); ret = gst_rtp_base_payload_push (basepayload, outbuf); return ret; /* ERRORS */ wrong_size: { GST_ELEMENT_ERROR (basepayload, STREAM, FORMAT, (NULL), ("received AMR frame with size <= 0")); gst_buffer_unmap (buffer, &map); gst_buffer_unref (buffer); return GST_FLOW_ERROR; } incomplete_frame: { GST_ELEMENT_ERROR (basepayload, STREAM, FORMAT, (NULL), ("received incomplete AMR frames")); gst_buffer_unmap (buffer, &map); gst_buffer_unref (buffer); return GST_FLOW_ERROR; } too_big: { GST_ELEMENT_ERROR (basepayload, STREAM, FORMAT, (NULL), ("received too many AMR frames for MTU")); gst_buffer_unmap (buffer, &map); gst_buffer_unref (buffer); return GST_FLOW_ERROR; } }
static GstFlowReturn gst_base_audio_src_create (GstBaseSrc * bsrc, guint64 offset, guint length, GstBuffer ** outbuf) { GstBaseAudioSrc *src = GST_BASE_AUDIO_SRC (bsrc); GstBuffer *buf; guchar *data; guint samples, total_samples; guint64 sample; gint bps; GstRingBuffer *ringbuffer; GstRingBufferSpec *spec; guint read; GstClockTime timestamp, duration; GstClock *clock; ringbuffer = src->ringbuffer; spec = &ringbuffer->spec; if (G_UNLIKELY (!gst_ring_buffer_is_acquired (ringbuffer))) goto wrong_state; bps = spec->bytes_per_sample; if ((length == 0 && bsrc->blocksize == 0) || length == -1) /* no length given, use the default segment size */ length = spec->segsize; else /* make sure we round down to an integral number of samples */ length -= length % bps; /* figure out the offset in the ringbuffer */ if (G_UNLIKELY (offset != -1)) { sample = offset / bps; /* if a specific offset was given it must be the next sequential * offset we expect or we fail for now. */ if (src->next_sample != -1 && sample != src->next_sample) goto wrong_offset; } else { /* calculate the sequentially next sample we need to read. This can jump and * create a DISCONT. */ sample = gst_base_audio_src_get_offset (src); } GST_DEBUG_OBJECT (src, "reading from sample %" G_GUINT64_FORMAT, sample); /* get the number of samples to read */ total_samples = samples = length / bps; /* FIXME, using a bufferpool would be nice here */ buf = gst_buffer_new_and_alloc (length); data = GST_BUFFER_DATA (buf); do { read = gst_ring_buffer_read (ringbuffer, sample, data, samples); GST_DEBUG_OBJECT (src, "read %u of %u", read, samples); /* if we read all, we're done */ if (read == samples) break; /* else something interrupted us and we wait for playing again. */ GST_DEBUG_OBJECT (src, "wait playing"); if (gst_base_src_wait_playing (bsrc) != GST_FLOW_OK) goto stopped; GST_DEBUG_OBJECT (src, "continue playing"); /* read next samples */ sample += read; samples -= read; data += read * bps; } while (TRUE); /* mark discontinuity if needed */ if (G_UNLIKELY (sample != src->next_sample) && src->next_sample != -1) { GST_WARNING_OBJECT (src, "create DISCONT of %" G_GUINT64_FORMAT " samples at sample %" G_GUINT64_FORMAT, sample - src->next_sample, sample); GST_ELEMENT_WARNING (src, CORE, CLOCK, (_("Can't record audio fast enough")), ("dropped %" G_GUINT64_FORMAT " samples", sample - src->next_sample)); GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT); } src->next_sample = sample + samples; /* get the normal timestamp to get the duration. */ timestamp = gst_util_uint64_scale_int (sample, GST_SECOND, spec->rate); duration = gst_util_uint64_scale_int (src->next_sample, GST_SECOND, spec->rate) - timestamp; GST_OBJECT_LOCK (src); if (!(clock = GST_ELEMENT_CLOCK (src))) goto no_sync; if (clock != src->clock) { /* we are slaved, check how to handle this */ switch (src->priv->slave_method) { case GST_BASE_AUDIO_SRC_SLAVE_RESAMPLE: /* not implemented, use skew algorithm. This algorithm should * work on the readout pointer and produces more or less samples based * on the clock drift */ case GST_BASE_AUDIO_SRC_SLAVE_SKEW: { GstClockTime running_time; GstClockTime base_time; GstClockTime current_time; guint64 running_time_sample; gint running_time_segment; gint current_segment; gint segment_skew; gint sps; /* samples per segment */ sps = ringbuffer->samples_per_seg; /* get the current time */ current_time = gst_clock_get_time (clock); /* get the basetime */ base_time = GST_ELEMENT_CAST (src)->base_time; /* get the running_time */ running_time = current_time - base_time; /* the running_time converted to a sample (relative to the ringbuffer) */ running_time_sample = gst_util_uint64_scale_int (running_time, spec->rate, GST_SECOND); /* the segmentnr corrensponding to running_time, round down */ running_time_segment = running_time_sample / sps; /* the segment currently read from the ringbuffer */ current_segment = sample / sps; /* the skew we have between running_time and the ringbuffertime */ segment_skew = running_time_segment - current_segment; GST_DEBUG_OBJECT (bsrc, "\n running_time = %" GST_TIME_FORMAT "\n timestamp = %" GST_TIME_FORMAT "\n running_time_segment = %d" "\n current_segment = %d" "\n segment_skew = %d", GST_TIME_ARGS (running_time), GST_TIME_ARGS (timestamp), running_time_segment, current_segment, segment_skew); /* Resync the ringbuffer if: * 1. We get one segment into the future. * This is clearly a lie, because we can't * possibly have a buffer with timestamp 1 at * time 0. (unless it has time-travelled...) * * 2. We are more than the length of the ringbuffer behind. * The length of the ringbuffer then gets to dictate * the threshold for what is concidered "too late" * * 3. If this is our first buffer. * We know that we should catch up to running_time * the first time we are ran. */ if ((segment_skew < 0) || (segment_skew >= ringbuffer->spec.segtotal) || (current_segment == 0)) { gint segments_written; gint first_segment; gint last_segment; gint new_last_segment; gint segment_diff; gint new_first_segment; guint64 new_sample; /* we are going to say that the last segment was captured at the current time (running_time), minus one segment of creation-latency in the ringbuffer. This can be thought of as: The segment arrived in the ringbuffer at time X, and that means it was created at time X - (one segment). */ new_last_segment = running_time_segment - 1; /* for better readablity */ first_segment = current_segment; /* get the amount of segments written from the device by now */ segments_written = g_atomic_int_get (&ringbuffer->segdone); /* subtract the base to segments_written to get the number of the last written segment in the ringbuffer (one segment written = segment 0) */ last_segment = segments_written - ringbuffer->segbase - 1; /* we see how many segments the ringbuffer was timeshifted */ segment_diff = new_last_segment - last_segment; /* we move the first segment an equal amount */ new_first_segment = first_segment + segment_diff; /* and we also move the segmentbase the same amount */ ringbuffer->segbase -= segment_diff; /* we calculate the new sample value */ new_sample = ((guint64) new_first_segment) * sps; /* and get the relative time to this -> our new timestamp */ timestamp = gst_util_uint64_scale_int (new_sample, GST_SECOND, spec->rate); /* we update the next sample accordingly */ src->next_sample = new_sample + samples; GST_DEBUG_OBJECT (bsrc, "Timeshifted the ringbuffer with %d segments: " "Updating the timestamp to %" GST_TIME_FORMAT ", " "and src->next_sample to %" G_GUINT64_FORMAT, segment_diff, GST_TIME_ARGS (timestamp), src->next_sample); } break; } case GST_BASE_AUDIO_SRC_SLAVE_RETIMESTAMP: { GstClockTime base_time, latency; /* We are slaved to another clock, take running time of the pipeline clock and * timestamp against it. Somebody else in the pipeline should figure out the * clock drift. We keep the duration we calculated above. */ timestamp = gst_clock_get_time (clock); base_time = GST_ELEMENT_CAST (src)->base_time; if (timestamp > base_time) timestamp -= base_time; else timestamp = 0; /* subtract latency */ latency = gst_util_uint64_scale_int (total_samples, GST_SECOND, spec->rate); if (timestamp > latency) timestamp -= latency; else timestamp = 0; } case GST_BASE_AUDIO_SRC_SLAVE_NONE: break; } } else { GstClockTime base_time; /* we are not slaved, subtract base_time */ base_time = GST_ELEMENT_CAST (src)->base_time; if (timestamp > base_time) timestamp -= base_time; else timestamp = 0; } no_sync: GST_OBJECT_UNLOCK (src); GST_BUFFER_TIMESTAMP (buf) = timestamp; GST_BUFFER_DURATION (buf) = duration; GST_BUFFER_OFFSET (buf) = sample; GST_BUFFER_OFFSET_END (buf) = sample + samples; *outbuf = buf; return GST_FLOW_OK; /* ERRORS */ wrong_state: { GST_DEBUG_OBJECT (src, "ringbuffer in wrong state"); return GST_FLOW_WRONG_STATE; } wrong_offset: { GST_ELEMENT_ERROR (src, RESOURCE, SEEK, (NULL), ("resource can only be operated on sequentially but offset %" G_GUINT64_FORMAT " was given", offset)); return GST_FLOW_ERROR; } stopped: { gst_buffer_unref (buf); GST_DEBUG_OBJECT (src, "ringbuffer stopped"); return GST_FLOW_WRONG_STATE; } }
static GstBuffer * gst_file_src_map_region (GstFileSrc * src, off_t offset, gsize size, gboolean testonly) { GstBuffer *buf; void *mmapregion; g_return_val_if_fail (offset >= 0, NULL); GST_LOG_OBJECT (src, "mapping region %08llx+%08lx from file into memory", offset, (gulong) size); mmapregion = mmap (NULL, size, PROT_READ, MAP_SHARED, src->fd, offset); if (mmapregion == NULL || mmapregion == MAP_FAILED) goto mmap_failed; GST_LOG_OBJECT (src, "mapped region %08lx+%08lx from file into memory at %p", (gulong) offset, (gulong) size, mmapregion); /* time to allocate a new mapbuf */ buf = (GstBuffer *) gst_mini_object_new (GST_TYPE_MMAP_BUFFER); /* mmap() the data into this new buffer */ GST_BUFFER_DATA (buf) = mmapregion; GST_MMAP_BUFFER (buf)->filesrc = src; #ifdef MADV_SEQUENTIAL if (src->sequential) { /* madvise to tell the kernel what to do with it */ #ifndef __SYMBIAN32__ if (madvise (mmapregion, size, MADV_SEQUENTIAL) < 0) { GST_WARNING_OBJECT (src, "warning: madvise failed: %s", g_strerror (errno)); } #endif #endif /* fill in the rest of the fields */ GST_BUFFER_SIZE (buf) = size; GST_BUFFER_OFFSET (buf) = offset; GST_BUFFER_OFFSET_END (buf) = offset + size; GST_BUFFER_TIMESTAMP (buf) = GST_CLOCK_TIME_NONE; return buf; /* ERROR */ mmap_failed: { if (!testonly) { GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL), ("mmap (0x%08lx, %d, 0x%" G_GINT64_MODIFIER "x) failed: %s", (gulong) size, src->fd, (guint64) offset, g_strerror (errno))); } return NULL; } } static GstBuffer * gst_file_src_map_small_region (GstFileSrc * src, off_t offset, gsize size) { GstBuffer *ret; off_t mod; guint pagesize; GST_LOG_OBJECT (src, "attempting to map a small buffer at %" G_GUINT64_FORMAT "+%d", (guint64) offset, (gint) size); pagesize = src->pagesize; mod = offset % pagesize; /* if the offset starts at a non-page boundary, we have to special case */ if (mod != 0) { gsize mapsize; off_t mapbase; GstBuffer *map; mapbase = offset - mod; mapsize = ((size + mod + pagesize - 1) / pagesize) * pagesize; GST_LOG_OBJECT (src, "not on page boundaries, resizing to map to %" G_GUINT64_FORMAT "+%d", (guint64) mapbase, (gint) mapsize); map = gst_file_src_map_region (src, mapbase, mapsize, FALSE); if (map == NULL) return NULL; ret = gst_buffer_create_sub (map, offset - mapbase, size); GST_BUFFER_OFFSET (ret) = GST_BUFFER_OFFSET (map) + offset - mapbase; gst_buffer_unref (map); } else { ret = gst_file_src_map_region (src, offset, size, FALSE); } return ret; }
static GstFlowReturn test_injector_chain (GstPad * pad, GstBuffer * buf) { GstFlowReturn ret; GstPad *srcpad; srcpad = gst_element_get_static_pad (GST_ELEMENT (GST_PAD_PARENT (pad)), "src"); /* since we're increasing timestamp/offsets, push this one first */ GST_LOG (" passing buffer [t=%" GST_TIME_FORMAT "-%" GST_TIME_FORMAT "], offset=%" G_GINT64_FORMAT ", offset_end=%" G_GINT64_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf) + GST_BUFFER_DURATION (buf)), GST_BUFFER_OFFSET (buf), GST_BUFFER_OFFSET_END (buf)); gst_buffer_ref (buf); ret = gst_pad_push (srcpad, buf); if (g_random_double () < injector_inject_probability) { GstBuffer *ibuf; ibuf = gst_buffer_copy (buf); if (GST_BUFFER_OFFSET_IS_VALID (buf) && GST_BUFFER_OFFSET_END_IS_VALID (buf)) { guint64 delta; delta = GST_BUFFER_OFFSET_END (buf) - GST_BUFFER_OFFSET (buf); GST_BUFFER_OFFSET (ibuf) += delta / 4; GST_BUFFER_OFFSET_END (ibuf) += delta / 4; } else { GST_BUFFER_OFFSET (ibuf) = GST_BUFFER_OFFSET_NONE; GST_BUFFER_OFFSET_END (ibuf) = GST_BUFFER_OFFSET_NONE; } if (GST_BUFFER_TIMESTAMP_IS_VALID (buf) && GST_BUFFER_DURATION_IS_VALID (buf)) { GstClockTime delta; delta = GST_BUFFER_DURATION (buf); GST_BUFFER_TIMESTAMP (ibuf) += delta / 4; } else { GST_BUFFER_TIMESTAMP (ibuf) = GST_CLOCK_TIME_NONE; GST_BUFFER_DURATION (ibuf) = GST_CLOCK_TIME_NONE; } if (GST_BUFFER_TIMESTAMP_IS_VALID (ibuf) || GST_BUFFER_OFFSET_IS_VALID (ibuf)) { GST_LOG ("injecting buffer [t=%" GST_TIME_FORMAT "-%" GST_TIME_FORMAT "], offset=%" G_GINT64_FORMAT ", offset_end=%" G_GINT64_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (ibuf)), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (ibuf) + GST_BUFFER_DURATION (ibuf)), GST_BUFFER_OFFSET (ibuf), GST_BUFFER_OFFSET_END (ibuf)); if (gst_pad_push (srcpad, ibuf) != GST_FLOW_OK) { /* ignore return value */ } } else { GST_WARNING ("couldn't inject buffer, no incoming timestamps or offsets"); gst_buffer_unref (ibuf); } } gst_buffer_unref (buf); return ret; }
static GstFlowReturn gst_file_src_create_mmap (GstFileSrc * src, guint64 offset, guint length, GstBuffer ** buffer) { GstBuffer *buf = NULL; gsize readsize, mapsize; off_t readend, mapstart, mapend; int i; /* calculate end pointers so we don't have to do so repeatedly later */ readsize = length; readend = offset + readsize; /* note this is the byte *after* the read */ mapstart = GST_BUFFER_OFFSET (src->mapbuf); mapsize = GST_BUFFER_SIZE (src->mapbuf); mapend = mapstart + mapsize; /* note this is the byte *after* the map */ GST_LOG ("attempting to read %08lx, %08lx, %08lx, %08lx", (unsigned long) readsize, (unsigned long) readend, (unsigned long) mapstart, (unsigned long) mapend); /* if the start is past the mapstart */ if (offset >= mapstart) { /* if the end is before the mapend, the buffer is in current mmap region... */ /* ('cause by definition if readend is in the buffer, so's readstart) */ if (readend <= mapend) { GST_LOG_OBJECT (src, "read buf %" G_GUINT64_FORMAT "+%u lives in " "current mapbuf %u+%u, creating subbuffer of mapbuf", offset, (guint) readsize, (guint) mapstart, (guint) mapsize); buf = gst_buffer_create_sub (src->mapbuf, offset - mapstart, readsize); GST_BUFFER_OFFSET (buf) = offset; /* if the start actually is within the current mmap region, map an overlap buffer */ } else if (offset < mapend) { GST_LOG_OBJECT (src, "read buf %" G_GUINT64_FORMAT "+%u starts in " "mapbuf %u+%u but ends outside, creating new mmap", offset, (guint) readsize, (guint) mapstart, (guint) mapsize); buf = gst_file_src_map_small_region (src, offset, readsize); if (buf == NULL) goto could_not_mmap; } /* the only other option is that buffer is totally outside, which means we search for it */ /* now we can assume that the start is *before* the current mmap region */ /* if the readend is past mapstart, we have two options */ } else if (readend >= mapstart) { /* either the read buffer overlaps the start of the mmap region */ /* or the read buffer fully contains the current mmap region */ /* either way, it's really not relevant, we just create a new region anyway */ GST_LOG_OBJECT (src, "read buf %" G_GUINT64_FORMAT "+%d starts before " "mapbuf %d+%d, but overlaps it", (guint64) offset, (gint) readsize, (gint) mapstart, (gint) mapsize); buf = gst_file_src_map_small_region (src, offset, readsize); if (buf == NULL) goto could_not_mmap; } /* then deal with the case where the read buffer is totally outside */ if (buf == NULL) { /* first check to see if there's a map that covers the right region already */ GST_LOG_OBJECT (src, "searching for mapbuf to cover %" G_GUINT64_FORMAT "+%d", offset, (int) readsize); /* if the read buffer crosses a mmap region boundary, create a one-off region */ if ((offset / src->mapsize) != (readend / src->mapsize)) { GST_LOG_OBJECT (src, "read buf %" G_GUINT64_FORMAT "+%d crosses a " "%d-byte boundary, creating a one-off", offset, (int) readsize, (int) src->mapsize); buf = gst_file_src_map_small_region (src, offset, readsize); if (buf == NULL) goto could_not_mmap; /* otherwise we will create a new mmap region and set it to the default */ } else { gsize mapsize; off_t nextmap = offset - (offset % src->mapsize); GST_LOG_OBJECT (src, "read buf %" G_GUINT64_FORMAT "+%d in new mapbuf " "at %" G_GUINT64_FORMAT "+%d, mapping and subbuffering", offset, (gint) readsize, (guint64) nextmap, (gint) src->mapsize); /* first, we're done with the old mapbuf */ gst_buffer_unref (src->mapbuf); mapsize = src->mapsize; /* double the mapsize as long as the readsize is smaller */ while (readsize + offset > nextmap + mapsize) { GST_LOG_OBJECT (src, "readsize smaller then mapsize %08x %d", (guint) readsize, (gint) mapsize); mapsize <<= 1; } /* create a new one */ src->mapbuf = gst_file_src_map_region (src, nextmap, mapsize, FALSE); if (src->mapbuf == NULL) goto could_not_mmap; /* subbuffer it */ buf = gst_buffer_create_sub (src->mapbuf, offset - nextmap, readsize); GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET (src->mapbuf) + offset - nextmap; } } /* if we need to touch the buffer (to bring it into memory), do so */ if (src->touch) { volatile guchar *p = GST_BUFFER_DATA (buf), c; /* read first byte of each page */ for (i = 0; i < GST_BUFFER_SIZE (buf); i += src->pagesize) c = p[i]; } /* we're done, return the buffer */ *buffer = buf; return GST_FLOW_OK; /* ERROR */ could_not_mmap: { return GST_FLOW_ERROR; } }
static void stop_typefinding (GstTypeFindElement * typefind) { GstState state; gboolean push_cached_buffers; gsize avail; GstBuffer *buffer; GstClockTime pts, dts; gst_element_get_state (GST_ELEMENT (typefind), &state, NULL, 0); push_cached_buffers = (state >= GST_STATE_PAUSED && typefind->caps); GST_DEBUG_OBJECT (typefind, "stopping typefinding%s", push_cached_buffers ? " and pushing cached events and buffers" : ""); typefind->mode = MODE_NORMAL; if (push_cached_buffers) gst_type_find_element_send_cached_events (typefind); GST_OBJECT_LOCK (typefind); avail = gst_adapter_available (typefind->adapter); if (avail == 0) goto no_data; pts = gst_adapter_prev_pts (typefind->adapter, NULL); dts = gst_adapter_prev_dts (typefind->adapter, NULL); buffer = gst_adapter_take_buffer (typefind->adapter, avail); GST_BUFFER_PTS (buffer) = pts; GST_BUFFER_DTS (buffer) = dts; GST_BUFFER_OFFSET (buffer) = typefind->initial_offset; GST_OBJECT_UNLOCK (typefind); if (!push_cached_buffers) { gst_buffer_unref (buffer); } else { GstPad *peer = gst_pad_get_peer (typefind->src); /* make sure the user gets a meaningful error message in this case, * which is not a core bug or bug of any kind (as the default error * message emitted by gstpad.c otherwise would make you think) */ if (peer && GST_PAD_CHAINFUNC (peer) == NULL) { GST_DEBUG_OBJECT (typefind, "upstream only supports push mode, while " "downstream element only works in pull mode, erroring out"); GST_ELEMENT_ERROR (typefind, STREAM, FAILED, ("%s cannot work in push mode. The operation is not supported " "with this source element or protocol.", G_OBJECT_TYPE_NAME (GST_PAD_PARENT (peer))), ("Downstream pad %s:%s has no chainfunction, and the upstream " "element does not support pull mode", GST_DEBUG_PAD_NAME (peer))); typefind->mode = MODE_ERROR; /* make the chain function error out */ gst_buffer_unref (buffer); } else { gst_pad_push (typefind->src, buffer); } if (peer) gst_object_unref (peer); } return; /* ERRORS */ no_data: { GST_DEBUG_OBJECT (typefind, "we have no data to typefind"); GST_OBJECT_UNLOCK (typefind); return; } }
static GstFlowReturn gst_file_src_create_read (GstFileSrc * src, guint64 offset, guint length, GstBuffer ** buffer) { int ret; GstBuffer *buf; if (G_UNLIKELY (src->read_position != offset)) { off_t res; res = lseek (src->fd, offset, SEEK_SET); if (G_UNLIKELY (res < 0 || res != offset)) goto seek_failed; src->read_position = offset; } buf = gst_buffer_new_and_alloc (length); GST_LOG_OBJECT (src, "Reading %d bytes", length); ret = read (src->fd, GST_BUFFER_DATA (buf), length); if (G_UNLIKELY (ret < 0)) goto could_not_read; /* seekable regular files should have given us what we expected */ if (G_UNLIKELY ((guint) ret < length && src->seekable)) goto unexpected_eos; /* other files should eos if they read 0 and more was requested */ if (G_UNLIKELY (ret == 0 && length > 0)) goto eos; length = ret; GST_BUFFER_SIZE (buf) = length; GST_BUFFER_OFFSET (buf) = offset; GST_BUFFER_OFFSET_END (buf) = offset + length; *buffer = buf; src->read_position += length; return GST_FLOW_OK; /* ERROR */ seek_failed: { GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM); return GST_FLOW_ERROR; } could_not_read: { GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM); gst_buffer_unref (buf); return GST_FLOW_ERROR; } unexpected_eos: { GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL), ("unexpected end of file.")); gst_buffer_unref (buf); return GST_FLOW_ERROR; } eos: { GST_DEBUG ("non-regular file hits EOS"); gst_buffer_unref (buf); return GST_FLOW_UNEXPECTED; } }
static GstFlowReturn gst_fake_src_create (GstBaseSrc * basesrc, guint64 offset, guint length, GstBuffer ** ret) { GstFakeSrc *src; GstBuffer *buf; GstClockTime time; gsize size; src = GST_FAKE_SRC (basesrc); buf = gst_fake_src_create_buffer (src, &size); GST_BUFFER_OFFSET (buf) = offset; if (src->datarate > 0) { time = (src->bytes_sent * GST_SECOND) / src->datarate; GST_BUFFER_DURATION (buf) = size * GST_SECOND / src->datarate; } else if (gst_base_src_is_live (basesrc)) { GstClock *clock; clock = gst_element_get_clock (GST_ELEMENT (src)); if (clock) { time = gst_clock_get_time (clock); time -= gst_element_get_base_time (GST_ELEMENT (src)); gst_object_unref (clock); } else { /* not an error not to have a clock */ time = GST_CLOCK_TIME_NONE; } } else { time = GST_CLOCK_TIME_NONE; } GST_BUFFER_DTS (buf) = time; GST_BUFFER_PTS (buf) = time; if (!src->silent) { gchar dts_str[64], pts_str[64], dur_str[64]; gchar flag_str[100]; GST_OBJECT_LOCK (src); g_free (src->last_message); if (GST_BUFFER_DTS (buf) != GST_CLOCK_TIME_NONE) { g_snprintf (dts_str, sizeof (dts_str), "%" GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_DTS (buf))); } else { g_strlcpy (dts_str, "none", sizeof (dts_str)); } if (GST_BUFFER_PTS (buf) != GST_CLOCK_TIME_NONE) { g_snprintf (pts_str, sizeof (pts_str), "%" GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_PTS (buf))); } else { g_strlcpy (pts_str, "none", sizeof (pts_str)); } if (GST_BUFFER_DURATION (buf) != GST_CLOCK_TIME_NONE) { g_snprintf (dur_str, sizeof (dur_str), "%" GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_DURATION (buf))); } else { g_strlcpy (dur_str, "none", sizeof (dur_str)); } { const char *flag_list[15] = { "", "", "", "", "live", "decode-only", "discont", "resync", "corrupted", "marker", "header", "gap", "droppable", "delta-unit", "in-caps" }; int i; char *end = flag_str; end[0] = '\0'; for (i = 0; i < G_N_ELEMENTS (flag_list); i++) { if (GST_MINI_OBJECT_CAST (buf)->flags & (1 << i)) { strcpy (end, flag_list[i]); end += strlen (end); end[0] = ' '; end[1] = '\0'; end++; } } } src->last_message = g_strdup_printf ("create ******* (%s:%s) (%u bytes, dts: %s, pts:%s" ", duration: %s, offset: %" G_GINT64_FORMAT ", offset_end: %" G_GINT64_FORMAT ", flags: %08x %s) %p", GST_DEBUG_PAD_NAME (GST_BASE_SRC_CAST (src)->srcpad), (guint) size, dts_str, pts_str, dur_str, GST_BUFFER_OFFSET (buf), GST_BUFFER_OFFSET_END (buf), GST_MINI_OBJECT_CAST (buf)->flags, flag_str, buf); GST_OBJECT_UNLOCK (src); g_object_notify_by_pspec ((GObject *) src, pspec_last_message); } if (src->signal_handoffs) { GST_LOG_OBJECT (src, "pre handoff emit"); g_signal_emit (src, gst_fake_src_signals[SIGNAL_HANDOFF], 0, buf, basesrc->srcpad); GST_LOG_OBJECT (src, "post handoff emit"); } src->bytes_sent += size; *ret = buf; return GST_FLOW_OK; }
static GstFlowReturn gst_opus_parse_parse_frame (GstBaseParse * base, GstBaseParseFrame * frame) { guint64 duration; GstOpusParse *parse; gboolean is_idheader, is_commentheader; GstMapInfo map; GstAudioClippingMeta *cmeta = gst_buffer_get_audio_clipping_meta (frame->buffer); parse = GST_OPUS_PARSE (base); g_assert (!cmeta || cmeta->format == GST_FORMAT_DEFAULT); is_idheader = gst_opus_header_is_id_header (frame->buffer); is_commentheader = gst_opus_header_is_comment_header (frame->buffer); if (!parse->got_headers || !parse->header_sent) { GstCaps *caps; /* Opus streams can decode to 1 or 2 channels, so use the header value if we have one, or 2 otherwise */ if (is_idheader) { gst_buffer_replace (&parse->id_header, frame->buffer); GST_DEBUG_OBJECT (parse, "Found ID header, keeping"); return GST_BASE_PARSE_FLOW_DROPPED; } else if (is_commentheader) { gst_buffer_replace (&parse->comment_header, frame->buffer); GST_DEBUG_OBJECT (parse, "Found comment header, keeping"); return GST_BASE_PARSE_FLOW_DROPPED; } parse->got_headers = TRUE; if (cmeta && cmeta->start) { parse->pre_skip += cmeta->start; gst_buffer_map (frame->buffer, &map, GST_MAP_READ); duration = packet_duration_opus (map.data, map.size); gst_buffer_unmap (frame->buffer, &map); /* Queue frame for later once we know all initial padding */ if (duration == cmeta->start) { frame->flags |= GST_BASE_PARSE_FRAME_FLAG_QUEUE; } } if (!(frame->flags & GST_BASE_PARSE_FRAME_FLAG_QUEUE)) { if (FALSE && parse->id_header && parse->comment_header) { guint16 pre_skip; gst_buffer_map (parse->id_header, &map, GST_MAP_READWRITE); pre_skip = GST_READ_UINT16_LE (map.data + 10); if (pre_skip != parse->pre_skip) { GST_DEBUG_OBJECT (parse, "Fixing up pre-skip %u -> %" G_GUINT64_FORMAT, pre_skip, parse->pre_skip); GST_WRITE_UINT16_LE (map.data + 10, parse->pre_skip); } gst_buffer_unmap (parse->id_header, &map); caps = gst_codec_utils_opus_create_caps_from_header (parse->id_header, parse->comment_header); } else { GstCaps *sink_caps; guint32 sample_rate = 48000; guint8 n_channels, n_streams, n_stereo_streams, channel_mapping_family; guint8 channel_mapping[256]; GstBuffer *id_header; sink_caps = gst_pad_get_current_caps (GST_BASE_PARSE_SINK_PAD (parse)); if (!sink_caps || !gst_codec_utils_opus_parse_caps (sink_caps, &sample_rate, &n_channels, &channel_mapping_family, &n_streams, &n_stereo_streams, channel_mapping)) { GST_INFO_OBJECT (parse, "No headers and no caps, blindly setting up canonical stereo"); n_channels = 2; n_streams = 1; n_stereo_streams = 1; channel_mapping_family = 0; channel_mapping[0] = 0; channel_mapping[1] = 1; } if (sink_caps) gst_caps_unref (sink_caps); id_header = gst_codec_utils_opus_create_header (sample_rate, n_channels, channel_mapping_family, n_streams, n_stereo_streams, channel_mapping, parse->pre_skip, 0); caps = gst_codec_utils_opus_create_caps_from_header (id_header, NULL); gst_buffer_unref (id_header); } gst_buffer_replace (&parse->id_header, NULL); gst_buffer_replace (&parse->comment_header, NULL); gst_pad_set_caps (GST_BASE_PARSE_SRC_PAD (parse), caps); gst_caps_unref (caps); parse->header_sent = TRUE; } } GST_BUFFER_TIMESTAMP (frame->buffer) = parse->next_ts; gst_buffer_map (frame->buffer, &map, GST_MAP_READ); duration = packet_duration_opus (map.data, map.size); gst_buffer_unmap (frame->buffer, &map); parse->next_ts += duration; GST_BUFFER_DURATION (frame->buffer) = duration; GST_BUFFER_OFFSET_END (frame->buffer) = gst_util_uint64_scale (parse->next_ts, 48000, GST_SECOND); GST_BUFFER_OFFSET (frame->buffer) = parse->next_ts; return GST_FLOW_OK; }
static GstFlowReturn gst_stream_synchronizer_sink_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer) { GstStreamSynchronizer *self = GST_STREAM_SYNCHRONIZER (parent); GstPad *opad; GstFlowReturn ret = GST_FLOW_ERROR; GstSyncStream *stream; GstClockTime duration = GST_CLOCK_TIME_NONE; GstClockTime timestamp = GST_CLOCK_TIME_NONE; GstClockTime timestamp_end = GST_CLOCK_TIME_NONE; GST_LOG_OBJECT (pad, "Handling buffer %p: size=%" G_GSIZE_FORMAT ", timestamp=%" GST_TIME_FORMAT " duration=%" GST_TIME_FORMAT " offset=%" G_GUINT64_FORMAT " offset_end=%" G_GUINT64_FORMAT, buffer, gst_buffer_get_size (buffer), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)), GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)), GST_BUFFER_OFFSET (buffer), GST_BUFFER_OFFSET_END (buffer)); timestamp = GST_BUFFER_TIMESTAMP (buffer); duration = GST_BUFFER_DURATION (buffer); if (GST_CLOCK_TIME_IS_VALID (timestamp) && GST_CLOCK_TIME_IS_VALID (duration)) timestamp_end = timestamp + duration; GST_STREAM_SYNCHRONIZER_LOCK (self); stream = gst_pad_get_element_private (pad); if (stream) { stream->seen_data = TRUE; if (stream->segment.format == GST_FORMAT_TIME && GST_CLOCK_TIME_IS_VALID (timestamp)) { GST_LOG_OBJECT (pad, "Updating position from %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT, GST_TIME_ARGS (stream->segment.position), GST_TIME_ARGS (timestamp)); if (stream->segment.rate > 0.0) stream->segment.position = timestamp; else stream->segment.position = timestamp_end; } } GST_STREAM_SYNCHRONIZER_UNLOCK (self); opad = gst_stream_get_other_pad_from_pad (self, pad); if (opad) { ret = gst_pad_push (opad, buffer); gst_object_unref (opad); } GST_LOG_OBJECT (pad, "Push returned: %s", gst_flow_get_name (ret)); if (ret == GST_FLOW_OK) { GList *l; GST_STREAM_SYNCHRONIZER_LOCK (self); stream = gst_pad_get_element_private (pad); if (stream && stream->segment.format == GST_FORMAT_TIME) { GstClockTime position; if (stream->segment.rate > 0.0) position = timestamp_end; else position = timestamp; if (GST_CLOCK_TIME_IS_VALID (position)) { GST_LOG_OBJECT (pad, "Updating position from %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT, GST_TIME_ARGS (stream->segment.position), GST_TIME_ARGS (position)); stream->segment.position = position; } } /* Advance EOS streams if necessary. For non-EOS * streams the demuxers should already do this! */ if (!GST_CLOCK_TIME_IS_VALID (timestamp_end) && GST_CLOCK_TIME_IS_VALID (timestamp)) { timestamp_end = timestamp + GST_SECOND; } for (l = self->streams; l; l = l->next) { GstSyncStream *ostream = l->data; gint64 position; if (!ostream->is_eos || ostream->eos_sent || ostream->segment.format != GST_FORMAT_TIME) continue; if (ostream->segment.position != -1) position = ostream->segment.position; else position = ostream->segment.start; /* Is there a 1 second lag? */ if (position != -1 && GST_CLOCK_TIME_IS_VALID (timestamp_end) && position + GST_SECOND < timestamp_end) { gint64 new_start; new_start = timestamp_end - GST_SECOND; GST_DEBUG_OBJECT (ostream->sinkpad, "Advancing stream %u from %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT, ostream->stream_number, GST_TIME_ARGS (position), GST_TIME_ARGS (new_start)); ostream->segment.position = new_start; self->send_gap_event = TRUE; ostream->gap_duration = new_start - position; g_cond_broadcast (&ostream->stream_finish_cond); } } GST_STREAM_SYNCHRONIZER_UNLOCK (self); } return ret; }
static GstFlowReturn gst_two_lame_chain (GstPad * pad, GstBuffer * buf) { GstTwoLame *twolame; guchar *mp3_data; gint mp3_buffer_size, mp3_size; gint64 duration; GstFlowReturn result; gint num_samples; guint8 *data; guint size; twolame = GST_TWO_LAME (GST_PAD_PARENT (pad)); GST_LOG_OBJECT (twolame, "entered chain"); if (!twolame->setup) goto not_setup; data = GST_BUFFER_DATA (buf); size = GST_BUFFER_SIZE (buf); if (twolame->float_input) num_samples = size / 4; else num_samples = size / 2; /* allocate space for output */ mp3_buffer_size = 1.25 * num_samples + 16384; mp3_data = g_malloc (mp3_buffer_size); if (twolame->num_channels == 1) { if (twolame->float_input) mp3_size = twolame_encode_buffer_float32 (twolame->glopts, (float *) data, (float *) data, num_samples, mp3_data, mp3_buffer_size); else mp3_size = twolame_encode_buffer (twolame->glopts, (short int *) data, (short int *) data, num_samples, mp3_data, mp3_buffer_size); } else { if (twolame->float_input) mp3_size = twolame_encode_buffer_float32_interleaved (twolame->glopts, (float *) data, num_samples / twolame->num_channels, mp3_data, mp3_buffer_size); else mp3_size = twolame_encode_buffer_interleaved (twolame->glopts, (short int *) data, num_samples / twolame->num_channels, mp3_data, mp3_buffer_size); } GST_LOG_OBJECT (twolame, "encoded %d bytes of audio to %d bytes of mp3", size, mp3_size); if (twolame->float_input) duration = gst_util_uint64_scale_int (size, GST_SECOND, 4 * twolame->samplerate * twolame->num_channels); else duration = gst_util_uint64_scale_int (size, GST_SECOND, 2 * twolame->samplerate * twolame->num_channels); if (GST_BUFFER_DURATION (buf) != GST_CLOCK_TIME_NONE && GST_BUFFER_DURATION (buf) != duration) { GST_DEBUG_OBJECT (twolame, "incoming buffer had incorrect duration %" GST_TIME_FORMAT ", outgoing buffer will have correct duration %" GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_DURATION (buf)), GST_TIME_ARGS (duration)); } if (twolame->last_ts == GST_CLOCK_TIME_NONE) { twolame->last_ts = GST_BUFFER_TIMESTAMP (buf); twolame->last_offs = GST_BUFFER_OFFSET (buf); twolame->last_duration = duration; } else { twolame->last_duration += duration; } gst_buffer_unref (buf); if (mp3_size < 0) { g_warning ("error %d", mp3_size); } if (mp3_size > 0) { GstBuffer *outbuf; outbuf = gst_buffer_new (); GST_BUFFER_DATA (outbuf) = mp3_data; GST_BUFFER_MALLOCDATA (outbuf) = mp3_data; GST_BUFFER_SIZE (outbuf) = mp3_size; GST_BUFFER_TIMESTAMP (outbuf) = twolame->last_ts; GST_BUFFER_OFFSET (outbuf) = twolame->last_offs; GST_BUFFER_DURATION (outbuf) = twolame->last_duration; gst_buffer_set_caps (outbuf, GST_PAD_CAPS (twolame->srcpad)); result = gst_pad_push (twolame->srcpad, outbuf); twolame->last_flow = result; if (result != GST_FLOW_OK) { GST_DEBUG_OBJECT (twolame, "flow return: %s", gst_flow_get_name (result)); } if (GST_CLOCK_TIME_IS_VALID (twolame->last_ts)) twolame->eos_ts = twolame->last_ts + twolame->last_duration; else twolame->eos_ts = GST_CLOCK_TIME_NONE; twolame->last_ts = GST_CLOCK_TIME_NONE; } else { g_free (mp3_data); result = GST_FLOW_OK; } return result; /* ERRORS */ not_setup: { gst_buffer_unref (buf); GST_ELEMENT_ERROR (twolame, CORE, NEGOTIATION, (NULL), ("encoder not initialized (input is not audio?)")); return GST_FLOW_ERROR; } }
static GstFlowReturn gst_gdp_depay_chain (GstPad * pad, GstBuffer * buffer) { GstGDPDepay *this; GstFlowReturn ret = GST_FLOW_OK; GstCaps *caps; GstBuffer *buf; GstEvent *event; guint available; this = GST_GDP_DEPAY (gst_pad_get_parent (pad)); /* On DISCONT, get rid of accumulated data. We assume a buffer after the * DISCONT contains (part of) a new valid header, if not we error because we * lost sync */ if (GST_BUFFER_IS_DISCONT (buffer)) { gst_adapter_clear (this->adapter); this->state = GST_GDP_DEPAY_STATE_HEADER; } gst_adapter_push (this->adapter, buffer); while (TRUE) { switch (this->state) { case GST_GDP_DEPAY_STATE_HEADER: { guint8 *header; /* collect a complete header, validate and store the header. Figure out * the payload length and switch to the PAYLOAD state */ available = gst_adapter_available (this->adapter); if (available < GST_DP_HEADER_LENGTH) goto done; GST_LOG_OBJECT (this, "reading GDP header from adapter"); header = gst_adapter_take (this->adapter, GST_DP_HEADER_LENGTH); if (!gst_dp_validate_header (GST_DP_HEADER_LENGTH, header)) { g_free (header); goto header_validate_error; } /* store types and payload length. Also store the header, which we need * to make the payload. */ this->payload_length = gst_dp_header_payload_length (header); this->payload_type = gst_dp_header_payload_type (header); /* free previous header and store new one. */ g_free (this->header); this->header = header; GST_LOG_OBJECT (this, "read GDP header, payload size %d, payload type %d, switching to state PAYLOAD", this->payload_length, this->payload_type); this->state = GST_GDP_DEPAY_STATE_PAYLOAD; break; } case GST_GDP_DEPAY_STATE_PAYLOAD: { /* in this state we wait for all the payload data to be available in the * adapter. Then we switch to the state where we actually process the * payload. */ available = gst_adapter_available (this->adapter); if (available < this->payload_length) goto done; /* change state based on type */ if (this->payload_type == GST_DP_PAYLOAD_BUFFER) { GST_LOG_OBJECT (this, "switching to state BUFFER"); this->state = GST_GDP_DEPAY_STATE_BUFFER; } else if (this->payload_type == GST_DP_PAYLOAD_CAPS) { GST_LOG_OBJECT (this, "switching to state CAPS"); this->state = GST_GDP_DEPAY_STATE_CAPS; } else if (this->payload_type >= GST_DP_PAYLOAD_EVENT_NONE) { GST_LOG_OBJECT (this, "switching to state EVENT"); this->state = GST_GDP_DEPAY_STATE_EVENT; } else { goto wrong_type; } if (this->payload_length && (!gst_dp_validate_payload (GST_DP_HEADER_LENGTH, this->header, gst_adapter_peek (this->adapter, this->payload_length)))) { goto payload_validate_error; } break; } case GST_GDP_DEPAY_STATE_BUFFER: { /* if we receive a buffer without caps first, we error out */ if (!this->caps) goto no_caps; GST_LOG_OBJECT (this, "reading GDP buffer from adapter"); buf = gst_dp_buffer_from_header (GST_DP_HEADER_LENGTH, this->header); if (!buf) goto buffer_failed; /* now take the payload if there is any */ if (this->payload_length > 0) { guint8 *payload; payload = gst_adapter_take (this->adapter, this->payload_length); memcpy (GST_BUFFER_DATA (buf), payload, this->payload_length); g_free (payload); } /* set caps and push */ gst_buffer_set_caps (buf, this->caps); GST_LOG_OBJECT (this, "deserialized buffer %p, pushing, timestamp %" GST_TIME_FORMAT ", duration %" GST_TIME_FORMAT ", offset %" G_GINT64_FORMAT ", offset_end %" G_GINT64_FORMAT ", size %d, flags 0x%x", buf, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)), GST_TIME_ARGS (GST_BUFFER_DURATION (buf)), GST_BUFFER_OFFSET (buf), GST_BUFFER_OFFSET_END (buf), GST_BUFFER_SIZE (buf), GST_BUFFER_FLAGS (buf)); ret = gst_pad_push (this->srcpad, buf); if (ret != GST_FLOW_OK) goto push_error; GST_LOG_OBJECT (this, "switching to state HEADER"); this->state = GST_GDP_DEPAY_STATE_HEADER; break; } case GST_GDP_DEPAY_STATE_CAPS: { guint8 *payload; /* take the payload of the caps */ GST_LOG_OBJECT (this, "reading GDP caps from adapter"); payload = gst_adapter_take (this->adapter, this->payload_length); caps = gst_dp_caps_from_packet (GST_DP_HEADER_LENGTH, this->header, payload); g_free (payload); if (!caps) goto caps_failed; GST_DEBUG_OBJECT (this, "deserialized caps %" GST_PTR_FORMAT, caps); gst_caps_replace (&(this->caps), caps); gst_pad_set_caps (this->srcpad, caps); /* drop the creation ref we still have */ gst_caps_unref (caps); GST_LOG_OBJECT (this, "switching to state HEADER"); this->state = GST_GDP_DEPAY_STATE_HEADER; break; } case GST_GDP_DEPAY_STATE_EVENT: { guint8 *payload; GST_LOG_OBJECT (this, "reading GDP event from adapter"); /* adapter doesn't like 0 length payload */ if (this->payload_length > 0) payload = gst_adapter_take (this->adapter, this->payload_length); else payload = NULL; event = gst_dp_event_from_packet (GST_DP_HEADER_LENGTH, this->header, payload); g_free (payload); if (!event) goto event_failed; GST_DEBUG_OBJECT (this, "deserialized event %p of type %s, pushing", event, gst_event_type_get_name (event->type)); gst_pad_push_event (this->srcpad, event); GST_LOG_OBJECT (this, "switching to state HEADER"); this->state = GST_GDP_DEPAY_STATE_HEADER; break; } } } done: gst_object_unref (this); return ret; /* ERRORS */ header_validate_error: { GST_ELEMENT_ERROR (this, STREAM, DECODE, (NULL), ("GDP packet header does not validate")); ret = GST_FLOW_ERROR; goto done; } payload_validate_error: { GST_ELEMENT_ERROR (this, STREAM, DECODE, (NULL), ("GDP packet payload does not validate")); ret = GST_FLOW_ERROR; goto done; } wrong_type: { GST_ELEMENT_ERROR (this, STREAM, DECODE, (NULL), ("GDP packet header is of wrong type")); ret = GST_FLOW_ERROR; goto done; } no_caps: { GST_ELEMENT_ERROR (this, STREAM, DECODE, (NULL), ("Received a buffer without first receiving caps")); ret = GST_FLOW_NOT_NEGOTIATED; goto done; } buffer_failed: { GST_ELEMENT_ERROR (this, STREAM, DECODE, (NULL), ("could not create buffer from GDP packet")); ret = GST_FLOW_ERROR; goto done; } push_error: { GST_WARNING_OBJECT (this, "pushing depayloaded buffer returned %d", ret); goto done; } caps_failed: { GST_ELEMENT_ERROR (this, STREAM, DECODE, (NULL), ("could not create caps from GDP packet")); ret = GST_FLOW_ERROR; goto done; } event_failed: { GST_ELEMENT_ERROR (this, STREAM, DECODE, (NULL), ("could not create event from GDP packet")); ret = GST_FLOW_ERROR; goto done; } }
static GstFlowReturn gst_identity_transform_ip (GstBaseTransform * trans, GstBuffer * buf) { GstFlowReturn ret = GST_FLOW_OK; GstIdentity *identity = GST_IDENTITY (trans); GstClockTime runtimestamp = G_GINT64_CONSTANT (0); if (identity->check_perfect) gst_identity_check_perfect (identity, buf); if (identity->check_imperfect_timestamp) gst_identity_check_imperfect_timestamp (identity, buf); if (identity->check_imperfect_offset) gst_identity_check_imperfect_offset (identity, buf); /* update prev values */ identity->prev_timestamp = GST_BUFFER_TIMESTAMP (buf); identity->prev_duration = GST_BUFFER_DURATION (buf); identity->prev_offset_end = GST_BUFFER_OFFSET_END (buf); identity->prev_offset = GST_BUFFER_OFFSET (buf); if (identity->error_after >= 0) { identity->error_after--; if (identity->error_after == 0) { GST_ELEMENT_ERROR (identity, CORE, FAILED, (_("Failed after iterations as requested.")), (NULL)); return GST_FLOW_ERROR; } } if (identity->drop_probability > 0.0) { if ((gfloat) (1.0 * rand () / (RAND_MAX)) < identity->drop_probability) { if (!identity->silent) { GST_OBJECT_LOCK (identity); g_free (identity->last_message); identity->last_message = g_strdup_printf ("dropping ******* (%s:%s)i (%d bytes, timestamp: %" GST_TIME_FORMAT ", duration: %" GST_TIME_FORMAT ", offset: %" G_GINT64_FORMAT ", offset_end: % " G_GINT64_FORMAT ", flags: %d) %p", GST_DEBUG_PAD_NAME (trans->sinkpad), GST_BUFFER_SIZE (buf), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)), GST_TIME_ARGS (GST_BUFFER_DURATION (buf)), GST_BUFFER_OFFSET (buf), GST_BUFFER_OFFSET_END (buf), GST_BUFFER_FLAGS (buf), buf); GST_OBJECT_UNLOCK (identity); gst_identity_notify_last_message (identity); } /* return DROPPED to basetransform. */ return GST_BASE_TRANSFORM_FLOW_DROPPED; } } if (identity->dump) { gst_util_dump_mem (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf)); } if (!identity->silent) { GST_OBJECT_LOCK (identity); g_free (identity->last_message); identity->last_message = g_strdup_printf ("chain ******* (%s:%s)i (%d bytes, timestamp: %" GST_TIME_FORMAT ", duration: %" GST_TIME_FORMAT ", offset: %" G_GINT64_FORMAT ", offset_end: % " G_GINT64_FORMAT ", flags: %d) %p", GST_DEBUG_PAD_NAME (trans->sinkpad), GST_BUFFER_SIZE (buf), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)), GST_TIME_ARGS (GST_BUFFER_DURATION (buf)), GST_BUFFER_OFFSET (buf), GST_BUFFER_OFFSET_END (buf), GST_BUFFER_FLAGS (buf), buf); GST_OBJECT_UNLOCK (identity); gst_identity_notify_last_message (identity); } if (identity->datarate > 0) { GstClockTime time = gst_util_uint64_scale_int (identity->offset, GST_SECOND, identity->datarate); GST_BUFFER_TIMESTAMP (buf) = time; GST_BUFFER_DURATION (buf) = GST_BUFFER_SIZE (buf) * GST_SECOND / identity->datarate; } if (identity->signal_handoffs) g_signal_emit (identity, gst_identity_signals[SIGNAL_HANDOFF], 0, buf); if (trans->segment.format == GST_FORMAT_TIME) runtimestamp = gst_segment_to_running_time (&trans->segment, GST_FORMAT_TIME, GST_BUFFER_TIMESTAMP (buf)); if ((identity->sync) && (trans->segment.format == GST_FORMAT_TIME)) { GstClock *clock; GST_OBJECT_LOCK (identity); if ((clock = GST_ELEMENT (identity)->clock)) { GstClockReturn cret; GstClockTime timestamp; timestamp = runtimestamp + GST_ELEMENT (identity)->base_time; /* save id if we need to unlock */ /* FIXME: actually unlock this somewhere in the state changes */ identity->clock_id = gst_clock_new_single_shot_id (clock, timestamp); GST_OBJECT_UNLOCK (identity); cret = gst_clock_id_wait (identity->clock_id, NULL); GST_OBJECT_LOCK (identity); if (identity->clock_id) { gst_clock_id_unref (identity->clock_id); identity->clock_id = NULL; } if (cret == GST_CLOCK_UNSCHEDULED) ret = GST_FLOW_UNEXPECTED; } GST_OBJECT_UNLOCK (identity); } identity->offset += GST_BUFFER_SIZE (buf); if (identity->sleep_time && ret == GST_FLOW_OK) g_usleep (identity->sleep_time); if (identity->single_segment && (trans->segment.format == GST_FORMAT_TIME) && (ret == GST_FLOW_OK)) { GST_BUFFER_TIMESTAMP (buf) = runtimestamp; GST_BUFFER_OFFSET (buf) = GST_CLOCK_TIME_NONE; GST_BUFFER_OFFSET_END (buf) = GST_CLOCK_TIME_NONE; } return ret; }
/* chain function * this function does the actual processing */ static GstFlowReturn gst_ivf_parse_chain (GstPad * pad, GstBuffer * buf) { GstIvfParse *ivf = GST_IVF_PARSE (GST_OBJECT_PARENT (pad)); gboolean res; /* lazy creation of the adapter */ if (G_UNLIKELY (ivf->adapter == NULL)) { ivf->adapter = gst_adapter_new (); } GST_LOG_OBJECT (ivf, "Pushing buffer of size %u to adapter", GST_BUFFER_SIZE (buf)); gst_adapter_push (ivf->adapter, buf); /* adapter takes ownership of buf */ res = GST_FLOW_OK; switch (ivf->state) { case GST_IVF_PARSE_START: if (gst_adapter_available (ivf->adapter) >= 32) { GstCaps *caps; const guint8 *data = gst_adapter_peek (ivf->adapter, 32); guint32 magic = GST_READ_UINT32_LE (data); guint16 version = GST_READ_UINT16_LE (data + 4); guint16 header_size = GST_READ_UINT16_LE (data + 6); guint32 fourcc = GST_READ_UINT32_LE (data + 8); guint16 width = GST_READ_UINT16_LE (data + 12); guint16 height = GST_READ_UINT16_LE (data + 14); guint32 rate_num = GST_READ_UINT32_LE (data + 16); guint32 rate_den = GST_READ_UINT32_LE (data + 20); #ifndef GST_DISABLE_GST_DEBUG guint32 num_frames = GST_READ_UINT32_LE (data + 24); #endif /* last 4 bytes unused */ gst_adapter_flush (ivf->adapter, 32); if (magic != GST_MAKE_FOURCC ('D', 'K', 'I', 'F') || version != 0 || header_size != 32 || fourcc != GST_MAKE_FOURCC ('V', 'P', '8', '0')) { GST_ELEMENT_ERROR (ivf, STREAM, WRONG_TYPE, (NULL), (NULL)); return GST_FLOW_ERROR; } /* create src pad caps */ caps = gst_caps_new_simple ("video/x-vp8", "width", G_TYPE_INT, width, "height", G_TYPE_INT, height, "framerate", GST_TYPE_FRACTION, rate_num, rate_den, NULL); GST_INFO_OBJECT (ivf, "Found stream: %" GST_PTR_FORMAT, caps); GST_LOG_OBJECT (ivf, "Stream has %d frames", num_frames); gst_pad_set_caps (ivf->srcpad, caps); gst_caps_unref (caps); /* keep framerate in instance for convenience */ ivf->rate_num = rate_num; ivf->rate_den = rate_den; gst_pad_push_event (ivf->srcpad, gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME, 0, -1, 0)); /* move along */ ivf->state = GST_IVF_PARSE_DATA; } else { GST_LOG_OBJECT (ivf, "Header data not yet available."); break; } /* fall through */ case GST_IVF_PARSE_DATA: while (gst_adapter_available (ivf->adapter) > 12) { const guint8 *data = gst_adapter_peek (ivf->adapter, 12); guint32 frame_size = GST_READ_UINT32_LE (data); guint64 frame_pts = GST_READ_UINT64_LE (data + 4); GST_LOG_OBJECT (ivf, "Read frame header: size %u, pts %" G_GUINT64_FORMAT, frame_size, frame_pts); if (gst_adapter_available (ivf->adapter) >= 12 + frame_size) { GstBuffer *frame; gst_adapter_flush (ivf->adapter, 12); frame = gst_adapter_take_buffer (ivf->adapter, frame_size); gst_buffer_set_caps (frame, GST_PAD_CAPS (ivf->srcpad)); GST_BUFFER_TIMESTAMP (frame) = gst_util_uint64_scale_int (GST_SECOND * frame_pts, ivf->rate_den, ivf->rate_num); GST_BUFFER_DURATION (frame) = gst_util_uint64_scale_int (GST_SECOND, ivf->rate_den, ivf->rate_num); GST_DEBUG_OBJECT (ivf, "Pushing frame of size %u, ts %" GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT ", off_end %" G_GUINT64_FORMAT, GST_BUFFER_SIZE (frame), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (frame)), GST_TIME_ARGS (GST_BUFFER_DURATION (frame)), GST_BUFFER_OFFSET (frame), GST_BUFFER_OFFSET_END (frame)); res = gst_pad_push (ivf->srcpad, frame); if (res != GST_FLOW_OK) break; } else { GST_LOG_OBJECT (ivf, "Frame data not yet available."); break; } } break; default: g_return_val_if_reached (GST_FLOW_ERROR); } return res; }
static GstFlowReturn gst_dvdec_chain (GstPad * pad, GstObject * parent, GstBuffer * buf) { GstDVDec *dvdec; guint8 *inframe; guint8 *outframe_ptrs[3]; gint outframe_pitches[3]; GstMapInfo map; GstVideoFrame frame; GstBuffer *outbuf; GstFlowReturn ret = GST_FLOW_OK; guint length; guint64 cstart = GST_CLOCK_TIME_NONE, cstop = GST_CLOCK_TIME_NONE; gboolean PAL, wide; dvdec = GST_DVDEC (parent); gst_buffer_map (buf, &map, GST_MAP_READ); inframe = map.data; /* buffer should be at least the size of one NTSC frame, this should * be enough to decode the header. */ if (G_UNLIKELY (map.size < NTSC_BUFFER)) goto wrong_size; /* preliminary dropping. unref and return if outside of configured segment */ if ((dvdec->segment.format == GST_FORMAT_TIME) && (!(gst_segment_clip (&dvdec->segment, GST_FORMAT_TIME, GST_BUFFER_TIMESTAMP (buf), GST_BUFFER_TIMESTAMP (buf) + GST_BUFFER_DURATION (buf), &cstart, &cstop)))) goto dropping; if (G_UNLIKELY (dv_parse_header (dvdec->decoder, inframe) < 0)) goto parse_header_error; /* get size */ PAL = dv_system_50_fields (dvdec->decoder); wide = dv_format_wide (dvdec->decoder); /* check the buffer is of right size after we know if we are * dealing with PAL or NTSC */ length = (PAL ? PAL_BUFFER : NTSC_BUFFER); if (G_UNLIKELY (map.size < length)) goto wrong_size; dv_parse_packs (dvdec->decoder, inframe); if (dvdec->video_offset % dvdec->drop_factor != 0) goto skip; /* renegotiate on change */ if (PAL != dvdec->PAL || wide != dvdec->wide) { dvdec->src_negotiated = FALSE; dvdec->PAL = PAL; dvdec->wide = wide; } dvdec->height = (dvdec->PAL ? PAL_HEIGHT : NTSC_HEIGHT); dvdec->interlaced = !dv_is_progressive (dvdec->decoder); /* negotiate if not done yet */ if (!dvdec->src_negotiated) { if (!gst_dvdec_src_negotiate (dvdec)) goto not_negotiated; } if (gst_pad_check_reconfigure (dvdec->srcpad)) { GstCaps *caps; caps = gst_pad_get_current_caps (dvdec->srcpad); if (!caps) goto flushing; gst_dvdec_negotiate_pool (dvdec, caps, &dvdec->vinfo); gst_caps_unref (caps); } if (dvdec->need_segment) { gst_pad_push_event (dvdec->srcpad, gst_event_new_segment (&dvdec->segment)); dvdec->need_segment = FALSE; } ret = gst_buffer_pool_acquire_buffer (dvdec->pool, &outbuf, NULL); if (G_UNLIKELY (ret != GST_FLOW_OK)) goto no_buffer; gst_video_frame_map (&frame, &dvdec->vinfo, outbuf, GST_MAP_WRITE); outframe_ptrs[0] = GST_VIDEO_FRAME_COMP_DATA (&frame, 0); outframe_pitches[0] = GST_VIDEO_FRAME_COMP_STRIDE (&frame, 0); /* the rest only matters for YUY2 */ if (dvdec->bpp < 3) { outframe_ptrs[1] = GST_VIDEO_FRAME_COMP_DATA (&frame, 1); outframe_ptrs[2] = GST_VIDEO_FRAME_COMP_DATA (&frame, 2); outframe_pitches[1] = GST_VIDEO_FRAME_COMP_STRIDE (&frame, 1); outframe_pitches[2] = GST_VIDEO_FRAME_COMP_STRIDE (&frame, 2); } GST_DEBUG_OBJECT (dvdec, "decoding and pushing buffer"); dv_decode_full_frame (dvdec->decoder, inframe, e_dv_color_yuv, outframe_ptrs, outframe_pitches); gst_video_frame_unmap (&frame); GST_BUFFER_FLAG_UNSET (outbuf, GST_VIDEO_BUFFER_FLAG_TFF); GST_BUFFER_OFFSET (outbuf) = GST_BUFFER_OFFSET (buf); GST_BUFFER_OFFSET_END (outbuf) = GST_BUFFER_OFFSET_END (buf); /* FIXME : Compute values when using non-TIME segments, * but for the moment make sure we at least don't set bogus values */ if (GST_CLOCK_TIME_IS_VALID (cstart)) { GST_BUFFER_TIMESTAMP (outbuf) = cstart; if (GST_CLOCK_TIME_IS_VALID (cstop)) GST_BUFFER_DURATION (outbuf) = cstop - cstart; } ret = gst_pad_push (dvdec->srcpad, outbuf); skip: dvdec->video_offset++; done: gst_buffer_unmap (buf, &map); gst_buffer_unref (buf); return ret; /* ERRORS */ wrong_size: { GST_ELEMENT_ERROR (dvdec, STREAM, DECODE, (NULL), ("Input buffer too small")); ret = GST_FLOW_ERROR; goto done; } parse_header_error: { GST_ELEMENT_ERROR (dvdec, STREAM, DECODE, (NULL), ("Error parsing DV header")); ret = GST_FLOW_ERROR; goto done; } not_negotiated: { GST_DEBUG_OBJECT (dvdec, "could not negotiate output"); if (GST_PAD_IS_FLUSHING (dvdec->srcpad)) ret = GST_FLOW_FLUSHING; else ret = GST_FLOW_NOT_NEGOTIATED; goto done; } flushing: { GST_DEBUG_OBJECT (dvdec, "have no current caps"); ret = GST_FLOW_FLUSHING; goto done; } no_buffer: { GST_DEBUG_OBJECT (dvdec, "could not allocate buffer"); goto done; } dropping: { GST_DEBUG_OBJECT (dvdec, "dropping buffer since it's out of the configured segment"); goto done; } }