static gboolean gst_ffmpegauddec_negotiate (GstFFMpegAudDec * ffmpegdec, gboolean force) { GstFFMpegAudDecClass *oclass; gint depth; GstAudioFormat format; GstAudioChannelPosition pos[64] = { 0, }; oclass = (GstFFMpegAudDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec)); depth = av_smp_format_depth (ffmpegdec->context->sample_fmt) * 8; format = gst_ffmpeg_smpfmt_to_audioformat (ffmpegdec->context->sample_fmt); if (format == GST_AUDIO_FORMAT_UNKNOWN) goto no_caps; if (!force && ffmpegdec->info.rate == ffmpegdec->context->sample_rate && ffmpegdec->info.channels == ffmpegdec->context->channels && ffmpegdec->info.finfo->depth == depth) return TRUE; GST_DEBUG_OBJECT (ffmpegdec, "Renegotiating audio from %dHz@%dchannels (%d) to %dHz@%dchannels (%d)", ffmpegdec->info.rate, ffmpegdec->info.channels, ffmpegdec->info.finfo->depth, ffmpegdec->context->sample_rate, ffmpegdec->context->channels, depth); gst_ffmpeg_channel_layout_to_gst (ffmpegdec->context->channel_layout, ffmpegdec->context->channels, pos); memcpy (ffmpegdec->ffmpeg_layout, pos, sizeof (GstAudioChannelPosition) * ffmpegdec->context->channels); /* Get GStreamer channel layout */ gst_audio_channel_positions_to_valid_order (pos, ffmpegdec->context->channels); ffmpegdec->needs_reorder = memcmp (pos, ffmpegdec->ffmpeg_layout, sizeof (pos[0]) * ffmpegdec->context->channels) != 0; gst_audio_info_set_format (&ffmpegdec->info, format, ffmpegdec->context->sample_rate, ffmpegdec->context->channels, pos); if (!gst_audio_decoder_set_output_format (GST_AUDIO_DECODER (ffmpegdec), &ffmpegdec->info)) goto caps_failed; return TRUE; /* ERRORS */ no_caps: { #ifdef HAVE_LIBAV_UNINSTALLED /* using internal ffmpeg snapshot */ GST_ELEMENT_ERROR (ffmpegdec, CORE, NEGOTIATION, ("Could not find GStreamer caps mapping for libav codec '%s'.", oclass->in_plugin->name), (NULL)); #else /* using external ffmpeg */ GST_ELEMENT_ERROR (ffmpegdec, CORE, NEGOTIATION, ("Could not find GStreamer caps mapping for libav codec '%s', and " "you are using an external libavcodec. This is most likely due to " "a packaging problem and/or libavcodec having been upgraded to a " "version that is not compatible with this version of " "gstreamer-libav. Make sure your gstreamer-libav and libavcodec " "packages come from the same source/repository.", oclass->in_plugin->name), (NULL)); #endif return FALSE; } caps_failed: { GST_ELEMENT_ERROR (ffmpegdec, CORE, NEGOTIATION, (NULL), ("Could not set caps for libav decoder (%s), not fixed?", oclass->in_plugin->name)); return FALSE; } }
static gboolean gst_ffmpegaudenc_set_format (GstAudioEncoder * encoder, GstAudioInfo * info) { GstFFMpegAudEnc *ffmpegaudenc = (GstFFMpegAudEnc *) encoder; GstCaps *other_caps; GstCaps *allowed_caps; GstCaps *icaps; gsize frame_size; GstFFMpegAudEncClass *oclass = (GstFFMpegAudEncClass *) G_OBJECT_GET_CLASS (ffmpegaudenc); /* close old session */ if (ffmpegaudenc->opened) { gst_ffmpeg_avcodec_close (ffmpegaudenc->context); ffmpegaudenc->opened = FALSE; } /* if we set it in _getcaps we should set it also in _link */ ffmpegaudenc->context->strict_std_compliance = -1; /* user defined properties */ if (ffmpegaudenc->bitrate > 0) { GST_INFO_OBJECT (ffmpegaudenc, "Setting avcontext to bitrate %d", ffmpegaudenc->bitrate); ffmpegaudenc->context->bit_rate = ffmpegaudenc->bitrate; ffmpegaudenc->context->bit_rate_tolerance = ffmpegaudenc->bitrate; } else { GST_INFO_OBJECT (ffmpegaudenc, "Using avcontext default bitrate %d", ffmpegaudenc->context->bit_rate); } /* RTP payload used for GOB production (for Asterisk) */ if (ffmpegaudenc->rtp_payload_size) { ffmpegaudenc->context->rtp_payload_size = ffmpegaudenc->rtp_payload_size; } /* some other defaults */ ffmpegaudenc->context->rc_strategy = 2; ffmpegaudenc->context->b_frame_strategy = 0; ffmpegaudenc->context->coder_type = 0; ffmpegaudenc->context->context_model = 0; ffmpegaudenc->context->scenechange_threshold = 0; ffmpegaudenc->context->inter_threshold = 0; /* fetch pix_fmt and so on */ gst_ffmpeg_audioinfo_to_context (info, ffmpegaudenc->context); if (!ffmpegaudenc->context->time_base.den) { ffmpegaudenc->context->time_base.den = GST_AUDIO_INFO_RATE (info); ffmpegaudenc->context->time_base.num = 1; ffmpegaudenc->context->ticks_per_frame = 1; } if (ffmpegaudenc->context->channel_layout) { gst_ffmpeg_channel_layout_to_gst (ffmpegaudenc->context->channel_layout, ffmpegaudenc->context->channels, ffmpegaudenc->ffmpeg_layout); ffmpegaudenc->needs_reorder = (memcmp (ffmpegaudenc->ffmpeg_layout, info->position, sizeof (GstAudioChannelPosition) * ffmpegaudenc->context->channels) != 0); } /* open codec */ if (gst_ffmpeg_avcodec_open (ffmpegaudenc->context, oclass->in_plugin) < 0) { if (ffmpegaudenc->context->priv_data) gst_ffmpeg_avcodec_close (ffmpegaudenc->context); GST_DEBUG_OBJECT (ffmpegaudenc, "avenc_%s: Failed to open FFMPEG codec", oclass->in_plugin->name); return FALSE; } /* some codecs support more than one format, first auto-choose one */ GST_DEBUG_OBJECT (ffmpegaudenc, "picking an output format ..."); allowed_caps = gst_pad_get_allowed_caps (GST_AUDIO_ENCODER_SRC_PAD (encoder)); if (!allowed_caps) { GST_DEBUG_OBJECT (ffmpegaudenc, "... but no peer, using template caps"); /* we need to copy because get_allowed_caps returns a ref, and * get_pad_template_caps doesn't */ allowed_caps = gst_pad_get_pad_template_caps (GST_AUDIO_ENCODER_SRC_PAD (encoder)); } GST_DEBUG_OBJECT (ffmpegaudenc, "chose caps %" GST_PTR_FORMAT, allowed_caps); gst_ffmpeg_caps_with_codecid (oclass->in_plugin->id, oclass->in_plugin->type, allowed_caps, ffmpegaudenc->context); /* try to set this caps on the other side */ other_caps = gst_ffmpeg_codecid_to_caps (oclass->in_plugin->id, ffmpegaudenc->context, TRUE); if (!other_caps) { gst_caps_unref (allowed_caps); gst_ffmpeg_avcodec_close (ffmpegaudenc->context); GST_DEBUG ("Unsupported codec - no caps found"); return FALSE; } icaps = gst_caps_intersect (allowed_caps, other_caps); gst_caps_unref (allowed_caps); gst_caps_unref (other_caps); if (gst_caps_is_empty (icaps)) { gst_caps_unref (icaps); return FALSE; } icaps = gst_caps_truncate (icaps); if (!gst_audio_encoder_set_output_format (GST_AUDIO_ENCODER (ffmpegaudenc), icaps)) { gst_ffmpeg_avcodec_close (ffmpegaudenc->context); gst_caps_unref (icaps); return FALSE; } gst_caps_unref (icaps); frame_size = ffmpegaudenc->context->frame_size; if (frame_size > 1) { gst_audio_encoder_set_frame_samples_min (GST_AUDIO_ENCODER (ffmpegaudenc), frame_size); gst_audio_encoder_set_frame_samples_max (GST_AUDIO_ENCODER (ffmpegaudenc), frame_size); gst_audio_encoder_set_frame_max (GST_AUDIO_ENCODER (ffmpegaudenc), 1); } else { gst_audio_encoder_set_frame_samples_min (GST_AUDIO_ENCODER (ffmpegaudenc), 0); gst_audio_encoder_set_frame_samples_max (GST_AUDIO_ENCODER (ffmpegaudenc), 0); gst_audio_encoder_set_frame_max (GST_AUDIO_ENCODER (ffmpegaudenc), 0); } /* success! */ ffmpegaudenc->opened = TRUE; return TRUE; }
static gboolean gst_ffmpegaudenc_set_format (GstAudioEncoder * encoder, GstAudioInfo * info) { GstFFMpegAudEnc *ffmpegaudenc = (GstFFMpegAudEnc *) encoder; GstCaps *other_caps; GstCaps *allowed_caps; GstCaps *icaps; gsize frame_size; GstFFMpegAudEncClass *oclass = (GstFFMpegAudEncClass *) G_OBJECT_GET_CLASS (ffmpegaudenc); /* close old session */ if (ffmpegaudenc->opened) { gst_ffmpeg_avcodec_close (ffmpegaudenc->context); ffmpegaudenc->opened = FALSE; if (avcodec_get_context_defaults3 (ffmpegaudenc->context, oclass->in_plugin) < 0) { GST_DEBUG_OBJECT (ffmpegaudenc, "Failed to set context defaults"); return FALSE; } } /* if we set it in _getcaps we should set it also in _link */ ffmpegaudenc->context->strict_std_compliance = ffmpegaudenc->compliance; /* user defined properties */ if (ffmpegaudenc->bitrate > 0) { GST_INFO_OBJECT (ffmpegaudenc, "Setting avcontext to bitrate %d", ffmpegaudenc->bitrate); ffmpegaudenc->context->bit_rate = ffmpegaudenc->bitrate; ffmpegaudenc->context->bit_rate_tolerance = ffmpegaudenc->bitrate; } else { GST_INFO_OBJECT (ffmpegaudenc, "Using avcontext default bitrate %" G_GINT64_FORMAT, (gint64) ffmpegaudenc->context->bit_rate); } /* RTP payload used for GOB production (for Asterisk) */ if (ffmpegaudenc->rtp_payload_size) { ffmpegaudenc->context->rtp_payload_size = ffmpegaudenc->rtp_payload_size; } /* some other defaults */ ffmpegaudenc->context->rc_strategy = 2; ffmpegaudenc->context->b_frame_strategy = 0; ffmpegaudenc->context->coder_type = 0; ffmpegaudenc->context->context_model = 0; ffmpegaudenc->context->scenechange_threshold = 0; /* fetch pix_fmt and so on */ gst_ffmpeg_audioinfo_to_context (info, ffmpegaudenc->context); if (!ffmpegaudenc->context->time_base.den) { ffmpegaudenc->context->time_base.den = GST_AUDIO_INFO_RATE (info); ffmpegaudenc->context->time_base.num = 1; ffmpegaudenc->context->ticks_per_frame = 1; } if (ffmpegaudenc->context->channel_layout) { gst_ffmpeg_channel_layout_to_gst (ffmpegaudenc->context->channel_layout, ffmpegaudenc->context->channels, ffmpegaudenc->ffmpeg_layout); ffmpegaudenc->needs_reorder = (memcmp (ffmpegaudenc->ffmpeg_layout, info->position, sizeof (GstAudioChannelPosition) * ffmpegaudenc->context->channels) != 0); } /* some codecs support more than one format, first auto-choose one */ GST_DEBUG_OBJECT (ffmpegaudenc, "picking an output format ..."); allowed_caps = gst_pad_get_allowed_caps (GST_AUDIO_ENCODER_SRC_PAD (encoder)); if (!allowed_caps) { GST_DEBUG_OBJECT (ffmpegaudenc, "... but no peer, using template caps"); /* we need to copy because get_allowed_caps returns a ref, and * get_pad_template_caps doesn't */ allowed_caps = gst_pad_get_pad_template_caps (GST_AUDIO_ENCODER_SRC_PAD (encoder)); } GST_DEBUG_OBJECT (ffmpegaudenc, "chose caps %" GST_PTR_FORMAT, allowed_caps); gst_ffmpeg_caps_with_codecid (oclass->in_plugin->id, oclass->in_plugin->type, allowed_caps, ffmpegaudenc->context); /* open codec */ if (gst_ffmpeg_avcodec_open (ffmpegaudenc->context, oclass->in_plugin) < 0) { gst_caps_unref (allowed_caps); gst_ffmpeg_avcodec_close (ffmpegaudenc->context); GST_DEBUG_OBJECT (ffmpegaudenc, "avenc_%s: Failed to open FFMPEG codec", oclass->in_plugin->name); if (avcodec_get_context_defaults3 (ffmpegaudenc->context, oclass->in_plugin) < 0) GST_DEBUG_OBJECT (ffmpegaudenc, "Failed to set context defaults"); if ((oclass->in_plugin->capabilities & CODEC_CAP_EXPERIMENTAL) && ffmpegaudenc->compliance != GST_FFMPEG_EXPERIMENTAL) { GST_ELEMENT_ERROR (ffmpegaudenc, LIBRARY, SETTINGS, ("Codec is experimental, but settings don't allow encoders to " "produce output of experimental quality"), ("This codec may not create output that is conformant to the specs " "or of good quality. If you must use it anyway, set the " "compliance property to experimental")); } return FALSE; } /* try to set this caps on the other side */ other_caps = gst_ffmpeg_codecid_to_caps (oclass->in_plugin->id, ffmpegaudenc->context, TRUE); if (!other_caps) { gst_caps_unref (allowed_caps); gst_ffmpeg_avcodec_close (ffmpegaudenc->context); GST_DEBUG ("Unsupported codec - no caps found"); if (avcodec_get_context_defaults3 (ffmpegaudenc->context, oclass->in_plugin) < 0) GST_DEBUG_OBJECT (ffmpegaudenc, "Failed to set context defaults"); return FALSE; } icaps = gst_caps_intersect (allowed_caps, other_caps); gst_caps_unref (allowed_caps); gst_caps_unref (other_caps); if (gst_caps_is_empty (icaps)) { gst_caps_unref (icaps); return FALSE; } icaps = gst_caps_fixate (icaps); if (!gst_audio_encoder_set_output_format (GST_AUDIO_ENCODER (ffmpegaudenc), icaps)) { gst_ffmpeg_avcodec_close (ffmpegaudenc->context); gst_caps_unref (icaps); if (avcodec_get_context_defaults3 (ffmpegaudenc->context, oclass->in_plugin) < 0) GST_DEBUG_OBJECT (ffmpegaudenc, "Failed to set context defaults"); return FALSE; } gst_caps_unref (icaps); frame_size = ffmpegaudenc->context->frame_size; if (frame_size > 1) { gst_audio_encoder_set_frame_samples_min (GST_AUDIO_ENCODER (ffmpegaudenc), frame_size); gst_audio_encoder_set_frame_samples_max (GST_AUDIO_ENCODER (ffmpegaudenc), frame_size); gst_audio_encoder_set_frame_max (GST_AUDIO_ENCODER (ffmpegaudenc), 1); } else { gst_audio_encoder_set_frame_samples_min (GST_AUDIO_ENCODER (ffmpegaudenc), 0); gst_audio_encoder_set_frame_samples_max (GST_AUDIO_ENCODER (ffmpegaudenc), 0); gst_audio_encoder_set_frame_max (GST_AUDIO_ENCODER (ffmpegaudenc), 0); } /* Store some tags */ { GstTagList *tags = gst_tag_list_new_empty (); const gchar *codec; gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_NOMINAL_BITRATE, (guint) ffmpegaudenc->context->bit_rate, NULL); if ((codec = gst_ffmpeg_get_codecid_longname (ffmpegaudenc->context->codec_id))) gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_AUDIO_CODEC, codec, NULL); gst_audio_encoder_merge_tags (encoder, tags, GST_TAG_MERGE_REPLACE); gst_tag_list_unref (tags); } /* success! */ ffmpegaudenc->opened = TRUE; return TRUE; }