static GstCaps *
gst_video_convert_fixate_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps, GstCaps * othercaps)
{
GstCaps *result;
GST_DEBUG_OBJECT (trans, "trying to fixate othercaps %" GST_PTR_FORMAT
" based on caps %" GST_PTR_FORMAT, othercaps, caps);
result = gst_caps_intersect (othercaps, caps);
if (gst_caps_is_empty (result)) {
gst_caps_unref (result);
result = othercaps;
} else {
gst_caps_unref (othercaps);
}
GST_DEBUG_OBJECT (trans, "now fixating %" GST_PTR_FORMAT, result);
result = gst_caps_make_writable (result);
gst_video_convert_fixate_format (trans, caps, result);
/* fixate remaining fields */
result = gst_caps_fixate (result);
return result;
}
static GstCaps *
gst_msdkvpp_fixate_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps, GstCaps * othercaps)
{
GstMsdkVPP *thiz = GST_MSDKVPP (trans);
GstCaps *result = NULL;
gboolean *use_dmabuf;
if (direction == GST_PAD_SRC) {
result = gst_caps_fixate (result);
use_dmabuf = &thiz->use_sinkpad_dmabuf;
} else {
result = gst_msdkvpp_fixate_srccaps (thiz, caps, othercaps);
use_dmabuf = &thiz->use_srcpad_dmabuf;
}
GST_DEBUG_OBJECT (trans, "fixated to %" GST_PTR_FORMAT, result);
gst_caps_unref (othercaps);
if (pad_can_dmabuf (thiz,
direction == GST_PAD_SRC ? GST_PAD_SINK : GST_PAD_SRC, result)) {
gst_caps_set_features (result, 0,
gst_caps_features_new (GST_CAPS_FEATURE_MEMORY_DMABUF, NULL));
*use_dmabuf = TRUE;
}
return result;
}
static GstCaps *
gst_ivtc_fixate_caps (GstBaseTransform * trans, GstPadDirection direction,
GstCaps * caps, GstCaps * othercaps)
{
GstCaps *result;
GST_DEBUG_OBJECT (trans, "fixating caps %" GST_PTR_FORMAT, othercaps);
result = gst_caps_make_writable (othercaps);
if (direction == GST_PAD_SINK) {
GstVideoInfo info;
if (gst_video_info_from_caps (&info, caps)) {
/* Smarter decision */
GST_DEBUG_OBJECT (trans, "Input framerate is %d/%d", info.fps_n,
info.fps_d);
if (info.fps_n == 30000 && info.fps_d == 1001)
gst_caps_set_simple (result, "framerate", GST_TYPE_FRACTION, 24000,
1001, NULL);
else
gst_caps_set_simple (result, "framerate", GST_TYPE_FRACTION, 24, 1,
NULL);
} else {
gst_caps_set_simple (result, "framerate", GST_TYPE_FRACTION, 24, 1, NULL);
}
}
result = gst_caps_fixate (result);
return result;
}
static gboolean
gst_mfc_dec_negotiate (GstVideoDecoder * decoder)
{
GstMFCDec *self = GST_MFC_DEC (decoder);
GstVideoCodecState *state;
GstCaps *allowed_caps;
GstVideoFormat format = GST_VIDEO_FORMAT_NV12;
allowed_caps = gst_pad_get_allowed_caps (GST_VIDEO_DECODER_SRC_PAD (self));
allowed_caps = gst_caps_truncate (allowed_caps);
allowed_caps = gst_caps_fixate (allowed_caps);
if (!gst_caps_is_empty (allowed_caps)) {
const gchar *format_str;
GstStructure *s = gst_caps_get_structure (allowed_caps, 0);
format_str = gst_structure_get_string (s, "format");
if (format_str)
format = gst_video_format_from_string (format_str);
}
gst_caps_unref (allowed_caps);
self->format = format;
state =
gst_video_decoder_set_output_state (GST_VIDEO_DECODER (self),
self->format, self->crop_width, self->crop_height, self->input_state);
gst_video_codec_state_unref (state);
return GST_VIDEO_DECODER_CLASS (parent_class)->negotiate (decoder);
}
/*!
* \brief OpenIMAJCapGStreamer::setFilter
* \param prop the property name
* \param type glib property type
* \param v1 the value
* \param v2 second value of property type requires it, else NULL
* Filter the output formats by setting appsink caps properties
*/
void OpenIMAJCapGStreamer::setFilter(const char *prop, GType type, int v1, int v2)
{
if(!caps || !( GST_IS_CAPS (caps) ))
{
if(type == G_TYPE_INT)
{
caps = gst_caps_new_simple("video/x-raw","format",G_TYPE_STRING,"BGR", prop, type, v1, NULL);
}
else
{
caps = gst_caps_new_simple("video/x-raw","format",G_TYPE_STRING,"BGR", prop, type, v1, v2, NULL);
}
}
else
{
if (! gst_caps_is_writable(caps))
caps = gst_caps_make_writable (caps);
if(type == G_TYPE_INT){
gst_caps_set_simple(caps, prop, type, v1, NULL);
}else{
gst_caps_set_simple(caps, prop, type, v1, v2, NULL);
}
}
caps = gst_caps_fixate(caps);
gst_app_sink_set_caps(GST_APP_SINK(sink), caps);
}
static gboolean
gst_msdkh264enc_set_format (GstMsdkEnc * encoder)
{
GstMsdkH264Enc *thiz = GST_MSDKH264ENC (encoder);
GstCaps *template_caps;
GstCaps *allowed_caps = NULL;
thiz->profile = 0;
thiz->level = 0;
template_caps = gst_static_pad_template_get_caps (&src_factory);
allowed_caps = gst_pad_get_allowed_caps (GST_VIDEO_ENCODER_SRC_PAD (encoder));
/* If downstream has ANY caps let encoder decide profile and level */
if (allowed_caps == template_caps) {
GST_INFO_OBJECT (thiz,
"downstream has ANY caps, profile/level set to auto");
} else if (allowed_caps) {
GstStructure *s;
const gchar *profile;
const gchar *level;
if (gst_caps_is_empty (allowed_caps)) {
gst_caps_unref (allowed_caps);
gst_caps_unref (template_caps);
return FALSE;
}
allowed_caps = gst_caps_make_writable (allowed_caps);
allowed_caps = gst_caps_fixate (allowed_caps);
s = gst_caps_get_structure (allowed_caps, 0);
profile = gst_structure_get_string (s, "profile");
if (profile) {
if (!strcmp (profile, "high")) {
thiz->profile = MFX_PROFILE_AVC_HIGH;
} else if (!strcmp (profile, "main")) {
thiz->profile = MFX_PROFILE_AVC_MAIN;
} else if (!strcmp (profile, "baseline")) {
thiz->profile = MFX_PROFILE_AVC_BASELINE;
} else if (!strcmp (profile, "constrained-baseline")) {
thiz->profile = MFX_PROFILE_AVC_CONSTRAINED_BASELINE;
} else {
g_assert_not_reached ();
}
}
level = gst_structure_get_string (s, "level");
if (level) {
thiz->level = gst_codec_utils_h264_get_level_idc (level);
}
gst_caps_unref (allowed_caps);
}
gst_caps_unref (template_caps);
return TRUE;
}
static gboolean
gst_msdkvp8enc_set_format (GstMsdkEnc * encoder)
{
GstMsdkVP8Enc *thiz = GST_MSDKVP8ENC (encoder);
GstCaps *template_caps;
GstCaps *allowed_caps = NULL;
thiz->profile = 0;
template_caps = gst_static_pad_template_get_caps (&src_factory);
allowed_caps = gst_pad_get_allowed_caps (GST_VIDEO_ENCODER_SRC_PAD (encoder));
/* If downstream has ANY caps let encoder decide profile and level */
if (allowed_caps == template_caps) {
GST_INFO_OBJECT (thiz,
"downstream has ANY caps, profile/level set to auto");
} else if (allowed_caps) {
GstStructure *s;
const gchar *profile;
if (gst_caps_is_empty (allowed_caps)) {
gst_caps_unref (allowed_caps);
gst_caps_unref (template_caps);
return FALSE;
}
allowed_caps = gst_caps_make_writable (allowed_caps);
allowed_caps = gst_caps_fixate (allowed_caps);
s = gst_caps_get_structure (allowed_caps, 0);
profile = gst_structure_get_string (s, "profile");
if (profile) {
if (!strcmp (profile, "3")) {
thiz->profile = MFX_PROFILE_VP8_3;
} else if (!strcmp (profile, "2")) {
thiz->profile = MFX_PROFILE_VP8_2;
} else if (!strcmp (profile, "1")) {
thiz->profile = MFX_PROFILE_VP8_1;
} else if (!strcmp (profile, "0")) {
thiz->profile = MFX_PROFILE_VP8_0;
} else {
g_assert_not_reached ();
}
}
gst_caps_unref (allowed_caps);
}
gst_caps_unref (template_caps);
return TRUE;
}
static GstCaps *
gst_ks_video_src_fixate (GstBaseSrc * basesrc, GstCaps * caps)
{
GstStructure *structure;
GstCaps *fixated_caps;
gint i;
fixated_caps = gst_caps_make_writable (caps);
for (i = 0; i < gst_caps_get_size (fixated_caps); ++i) {
structure = gst_caps_get_structure (fixated_caps, i);
gst_structure_fixate_field_nearest_int (structure, "width", G_MAXINT);
gst_structure_fixate_field_nearest_int (structure, "height", G_MAXINT);
gst_structure_fixate_field_nearest_fraction (structure, "framerate",
G_MAXINT, 1);
}
return gst_caps_fixate (fixated_caps);
}
/*!
* \brief CvCapture_GStreamer::setFilter
* \param prop the property name
* \param type glib property type
* \param v1 the value
* \param v2 second value of property type requires it, else NULL
* Filter the output formats by setting appsink caps properties
*/
void CvCapture_GStreamer::setFilter(const char *prop, int type, int v1, int v2)
{
//printf("GStreamer: setFilter \n");
if(!caps || !( GST_IS_CAPS (caps) ))
{
if(type == G_TYPE_INT)
{
#if GST_VERSION_MAJOR == 0
caps = gst_caps_new_simple("video/x-raw-rgb", prop, type, v1, NULL);
#else
caps = gst_caps_new_simple("video/x-raw","format",G_TYPE_STRING,"BGR", prop, type, v1, NULL);
#endif
}
else
{
#if GST_VERSION_MAJOR == 0
caps = gst_caps_new_simple("video/x-raw-rgb", prop, type, v1, v2, NULL);
#else
caps = gst_caps_new_simple("video/x-raw","format",G_TYPE_STRING,"BGR", prop, type, v1, v2, NULL);
#endif
}
}
else
{
#if GST_VERSION_MAJOR > 0
if (! gst_caps_is_writable(caps))
caps = gst_caps_make_writable (caps);
#endif
if(type == G_TYPE_INT){
gst_caps_set_simple(caps, prop, type, v1, NULL);
}else{
gst_caps_set_simple(caps, prop, type, v1, v2, NULL);
}
}
#if GST_VERSION_MAJOR > 0
caps = gst_caps_fixate(caps);
#endif
gst_app_sink_set_caps(GST_APP_SINK(sink), caps);
//printf("filtering with %s\n", gst_caps_to_string(caps));
}
static GstCaps *
gst_yuv_to_rgb_fixate_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps, GstCaps * othercaps)
{
GstCaps *result;
GST_DEBUG_OBJECT (trans, "fixating caps %" GST_PTR_FORMAT, othercaps);
result = gst_caps_intersect (othercaps, caps);
if (gst_caps_is_empty (result)) {
gst_caps_unref (result);
result = othercaps;
} else {
gst_caps_unref (othercaps);
}
/* fixate remaining fields */
result = gst_caps_fixate (result);
return result;
}
static GstCaps *
fs_videoanyrate_fixate_caps (GstBaseTransform * base,
GstPadDirection direction, GstCaps * caps, GstCaps * othercaps)
{
GstStructure *ins, *outs;
const GValue *from_fr, *to_fr;
g_return_val_if_fail (gst_caps_is_fixed (caps), othercaps);
othercaps = gst_caps_make_writable (othercaps);
GST_DEBUG_OBJECT (base, "trying to fixate othercaps %" GST_PTR_FORMAT
" based on caps %" GST_PTR_FORMAT, othercaps, caps);
ins = gst_caps_get_structure (caps, 0);
outs = gst_caps_get_structure (othercaps, 0);
from_fr = gst_structure_get_value (ins, "framerate");
to_fr = gst_structure_get_value (outs, "framerate");
/* we have both PAR but they might not be fixated */
if (from_fr && to_fr && !gst_value_is_fixed (to_fr)) {
gint from_fr_n, from_fr_d;
/* from_fr should be fixed */
g_return_val_if_fail (gst_value_is_fixed (from_fr), othercaps);
from_fr_n = gst_value_get_fraction_numerator (from_fr);
from_fr_d = gst_value_get_fraction_denominator (from_fr);
GST_DEBUG_OBJECT (base, "fixating to_fr nearest to %d/%d",
from_fr_n, from_fr_d);
gst_structure_fixate_field_nearest_fraction (outs, "framerate",
from_fr_n, from_fr_d);
}
return gst_caps_fixate (othercaps);
}
static GstCaps *
gst_v4l2_transform_fixate_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps, GstCaps * othercaps)
{
GstCaps *result;
GST_DEBUG_OBJECT (trans, "trying to fixate othercaps %" GST_PTR_FORMAT
" based on caps %" GST_PTR_FORMAT, othercaps, caps);
result = gst_caps_intersect (othercaps, caps);
if (gst_caps_is_empty (result)) {
gst_caps_unref (result);
result = othercaps;
} else {
gst_caps_unref (othercaps);
}
GST_DEBUG_OBJECT (trans, "now fixating %" GST_PTR_FORMAT, result);
result = gst_caps_fixate (result);
return result;
}
bool nvxio::GStreamerVideoRenderImpl::InitializeGStreamerPipeline()
{
std::ostringstream stream;
pipeline = GST_PIPELINE(gst_pipeline_new(NULL));
if (pipeline == NULL)
{
NVXIO_PRINT("Cannot create Gstreamer pipeline");
return false;
}
bus = gst_pipeline_get_bus(GST_PIPELINE (pipeline));
// create appsrc
GstElement * appsrcelem = gst_element_factory_make("appsrc", NULL);
if (appsrcelem == NULL)
{
NVXIO_PRINT("Cannot create appsrc");
FinalizeGStreamerPipeline();
return false;
}
g_object_set(G_OBJECT(appsrcelem), "is-live", 0, NULL);
g_object_set(G_OBJECT(appsrcelem), "num-buffers", -1, NULL);
g_object_set(G_OBJECT(appsrcelem), "emit-signals", 0, NULL);
g_object_set(G_OBJECT(appsrcelem), "block", 1, NULL);
g_object_set(G_OBJECT(appsrcelem), "size", static_cast<guint64>(wndHeight_ * wndWidth_ * 4), NULL);
g_object_set(G_OBJECT(appsrcelem), "format", GST_FORMAT_TIME, NULL);
g_object_set(G_OBJECT(appsrcelem), "stream-type", GST_APP_STREAM_TYPE_STREAM, NULL);
appsrc = GST_APP_SRC_CAST(appsrcelem);
#if GST_VERSION_MAJOR == 0
GstCaps * caps = gst_caps_new_simple("video/x-raw-rgb",
"bpp", G_TYPE_INT, 32,
"endianness", G_TYPE_INT, 4321,
"red_mask", G_TYPE_INT, -16777216,
"green_mask", G_TYPE_INT, 16711680,
"blue_mask", G_TYPE_INT, 65280,
"alpha_mask", G_TYPE_INT, 255,
"width", G_TYPE_INT, wndWidth_,
"height", G_TYPE_INT, wndHeight_,
"framerate", GST_TYPE_FRACTION, GSTREAMER_DEFAULT_FPS, 1,
NULL);
if (caps == NULL)
{
NVXIO_PRINT("Failed to create caps");
FinalizeGStreamerPipeline();
return false;
}
#else
// support 4 channel 8 bit data
stream << "video/x-raw"
<< ", width=" << wndWidth_
<< ", height=" << wndHeight_
<< ", format=(string){RGBA}"
<< ", framerate=" << GSTREAMER_DEFAULT_FPS << "/1;";
GstCaps * caps = gst_caps_from_string(stream.str().c_str());
if (caps == NULL)
{
NVXIO_PRINT("Failed to create caps");
FinalizeGStreamerPipeline();
return false;
}
caps = gst_caps_fixate(caps);
#endif
gst_app_src_set_caps(appsrc, caps);
gst_caps_unref(caps);
gst_bin_add(GST_BIN(pipeline), appsrcelem);
// create color convert element
GstElement * color = gst_element_factory_make(COLOR_ELEM, NULL);
if (color == NULL)
{
NVXIO_PRINT("Cannot create " COLOR_ELEM " element");
FinalizeGStreamerPipeline();
return false;
}
gst_bin_add(GST_BIN(pipeline), color);
// create videoflip element
GstElement * videoflip = gst_element_factory_make("videoflip", NULL);
if (videoflip == NULL)
{
NVXIO_PRINT("Cannot create videoflip element");
FinalizeGStreamerPipeline();
return false;
}
g_object_set(G_OBJECT(videoflip), "method", 5, NULL);
gst_bin_add(GST_BIN(pipeline), videoflip);
// create encodelem element
GstElement * encodelem = gst_element_factory_make(ENCODE_ELEM, NULL);
if (encodelem == NULL)
{
NVXIO_PRINT("Cannot create " ENCODE_ELEM " element");
FinalizeGStreamerPipeline();
return false;
}
gst_bin_add(GST_BIN(pipeline), encodelem);
// create avimux element
GstElement * avimux = gst_element_factory_make("avimux", NULL);
if (avimux == NULL)
{
NVXIO_PRINT("Cannot create avimux element");
FinalizeGStreamerPipeline();
return false;
}
gst_bin_add(GST_BIN(pipeline), avimux);
// create filesink element
GstElement * filesink = gst_element_factory_make("filesink", NULL);
if (filesink == NULL)
{
NVXIO_PRINT("Cannot create filesink element");
FinalizeGStreamerPipeline();
return false;
}
g_object_set(G_OBJECT(filesink), "location", windowTitle_.c_str(), NULL);
g_object_set(G_OBJECT(filesink), "append", 0, NULL);
gst_bin_add(GST_BIN(pipeline), filesink);
// link elements
if (!gst_element_link_many(appsrcelem, color, videoflip,
encodelem, avimux, filesink, NULL))
{
NVXIO_PRINT("GStreamer: cannot link appsrc -> " COLOR_ELEM
" -> videoflip -> " ENCODE_ELEM " -> avimux -> filesink");
FinalizeGStreamerPipeline();
return false;
}
// Force pipeline to play video as fast as possible, ignoring system clock
gst_pipeline_use_clock(pipeline, NULL);
num_frames = 0;
GstStateChangeReturn status = gst_element_set_state(GST_ELEMENT(pipeline), GST_STATE_PLAYING);
if (status == GST_STATE_CHANGE_FAILURE)
{
NVXIO_PRINT("GStreamer: unable to start playback");
FinalizeGStreamerPipeline();
return false;
}
return true;
}
static gboolean
gst_atdec_set_format (GstAudioDecoder * decoder, GstCaps * caps)
{
OSStatus status;
AudioStreamBasicDescription input_format = { 0 };
AudioStreamBasicDescription output_format = { 0 };
GstAudioInfo output_info = { 0 };
AudioChannelLayout output_layout = { 0 };
GstCaps *output_caps;
GstATDec *atdec = GST_ATDEC (decoder);
GST_DEBUG_OBJECT (atdec, "set_format");
if (atdec->queue)
gst_atdec_destroy_queue (atdec, TRUE);
/* configure input_format from caps */
gst_caps_to_at_format (caps, &input_format);
/* negotiate output caps */
output_caps = gst_pad_get_allowed_caps (GST_AUDIO_DECODER_SRC_PAD (atdec));
if (!output_caps)
output_caps =
gst_pad_get_pad_template_caps (GST_AUDIO_DECODER_SRC_PAD (atdec));
output_caps = gst_caps_fixate (output_caps);
gst_caps_set_simple (output_caps,
"rate", G_TYPE_INT, (int) input_format.mSampleRate,
"channels", G_TYPE_INT, input_format.mChannelsPerFrame, NULL);
/* configure output_format from caps */
gst_caps_to_at_format (output_caps, &output_format);
/* set the format we want to negotiate downstream */
gst_audio_info_from_caps (&output_info, output_caps);
gst_audio_info_set_format (&output_info,
output_format.mFormatFlags & kLinearPCMFormatFlagIsSignedInteger ?
GST_AUDIO_FORMAT_S16LE : GST_AUDIO_FORMAT_F32LE,
output_format.mSampleRate, output_format.mChannelsPerFrame, NULL);
gst_audio_decoder_set_output_format (decoder, &output_info);
gst_caps_unref (output_caps);
status = AudioQueueNewOutput (&input_format, gst_atdec_buffer_emptied,
atdec, NULL, NULL, 0, &atdec->queue);
if (status)
goto create_queue_error;
/* FIXME: figure out how to map this properly */
if (output_format.mChannelsPerFrame == 1)
output_layout.mChannelLayoutTag = kAudioChannelLayoutTag_Mono;
else
output_layout.mChannelLayoutTag = kAudioChannelLayoutTag_Stereo;
status = AudioQueueSetOfflineRenderFormat (atdec->queue,
&output_format, &output_layout);
if (status)
goto set_format_error;
status = AudioQueueStart (atdec->queue, NULL);
if (status)
goto start_error;
return TRUE;
create_queue_error:
GST_ELEMENT_ERROR (atdec, STREAM, FORMAT, (NULL),
("AudioQueueNewOutput returned error: %d", status));
return FALSE;
set_format_error:
GST_ELEMENT_ERROR (atdec, STREAM, FORMAT, (NULL),
("AudioQueueSetOfflineRenderFormat returned error: %d", status));
gst_atdec_destroy_queue (atdec, FALSE);
return FALSE;
start_error:
GST_ELEMENT_ERROR (atdec, STREAM, FORMAT, (NULL),
("AudioQueueStart returned error: %d", status));
gst_atdec_destroy_queue (atdec, FALSE);
return FALSE;
}
/* the first caps we receive on any of the sinkpads will define the caps for all
* the other sinkpads because we can only mix streams with the same caps.
*/
static gboolean
gst_audiomixer_setcaps (GstAudioMixer * audiomixer, GstPad * pad,
GstCaps * orig_caps)
{
GstAggregator *agg = GST_AGGREGATOR (audiomixer);
GstAudioAggregator *aagg = GST_AUDIO_AGGREGATOR (audiomixer);
GstCaps *caps;
GstAudioInfo info;
GstStructure *s;
gint channels = 0;
caps = gst_caps_copy (orig_caps);
s = gst_caps_get_structure (caps, 0);
if (gst_structure_get_int (s, "channels", &channels))
if (channels <= 2)
gst_structure_remove_field (s, "channel-mask");
if (!gst_audio_info_from_caps (&info, caps))
goto invalid_format;
if (channels == 1) {
GstCaps *filter;
GstCaps *downstream_caps;
if (audiomixer->filter_caps)
filter = gst_caps_intersect_full (caps, audiomixer->filter_caps,
GST_CAPS_INTERSECT_FIRST);
else
filter = gst_caps_ref (caps);
downstream_caps = gst_pad_peer_query_caps (agg->srcpad, filter);
gst_caps_unref (filter);
if (downstream_caps) {
gst_caps_unref (caps);
caps = downstream_caps;
if (gst_caps_is_empty (caps)) {
gst_caps_unref (caps);
return FALSE;
}
caps = gst_caps_fixate (caps);
}
}
GST_OBJECT_LOCK (audiomixer);
/* don't allow reconfiguration for now; there's still a race between the
* different upstream threads doing query_caps + accept_caps + sending
* (possibly different) CAPS events, but there's not much we can do about
* that, upstream needs to deal with it. */
if (aagg->current_caps != NULL) {
if (gst_audio_info_is_equal (&info, &aagg->info)) {
GST_OBJECT_UNLOCK (audiomixer);
gst_caps_unref (caps);
gst_audio_aggregator_set_sink_caps (aagg, GST_AUDIO_AGGREGATOR_PAD (pad),
orig_caps);
return TRUE;
} else {
GST_DEBUG_OBJECT (pad, "got input caps %" GST_PTR_FORMAT ", but "
"current caps are %" GST_PTR_FORMAT, caps, aagg->current_caps);
GST_OBJECT_UNLOCK (audiomixer);
gst_pad_push_event (pad, gst_event_new_reconfigure ());
gst_caps_unref (caps);
return FALSE;
}
} else {
gst_caps_replace (&aagg->current_caps, caps);
aagg->info = info;
gst_pad_mark_reconfigure (GST_AGGREGATOR_SRC_PAD (agg));
}
GST_OBJECT_UNLOCK (audiomixer);
gst_audio_aggregator_set_sink_caps (aagg, GST_AUDIO_AGGREGATOR_PAD (pad),
orig_caps);
GST_INFO_OBJECT (pad, "handle caps change to %" GST_PTR_FORMAT, caps);
gst_caps_unref (caps);
return TRUE;
/* ERRORS */
invalid_format:
{
gst_caps_unref (caps);
GST_WARNING_OBJECT (audiomixer, "invalid format set as caps");
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 (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;
}
bool GstShow::init_pipeline(const int xwinid)
{
pipeline = gst_pipeline_new ("xvoverlay");
//create base pipeline elements
videosink = gst_element_factory_make("xvimagesink", NULL);
gst_video_overlay_set_window_handle (GST_VIDEO_OVERLAY (videosink), xwinid);
mixer = gst_element_factory_make("videomixer", "mix");
///* Manually linking the videoboxes to the mixer */
GstPadTemplate *mixer_sink_pad_template = gst_element_class_get_pad_template(GST_ELEMENT_GET_CLASS(mixer), "sink_%u");
if(mixer_sink_pad_template == NULL) {
g_printerr("Could not get mixer pad template.\n");
// gst_object_unref(something);
return false;
}
GstPad* mixerpads[2];
mixerpads[0] = gst_element_request_pad(mixer, mixer_sink_pad_template, NULL, NULL);
mixerpads[1] = gst_element_request_pad(mixer, mixer_sink_pad_template, NULL, NULL);
g_object_set(mixerpads[0], "xpos", 0, NULL);
g_object_set(mixerpads[0], "ypos", 0, NULL);
g_object_set(mixerpads[0], "alpha",1.0, NULL);
g_object_set(mixerpads[1], "xpos", 640, NULL);
g_object_set(mixerpads[1], "ypos", 0, NULL);
g_object_set(mixerpads[1], "alpha",1.0, NULL);
gst_object_unref(mixerpads[0]);
gst_object_unref(mixerpads[1]);
// prepare queue and scale
for (int i = 0; i<2; i++)
{
queue[i] = gst_element_factory_make("queue", NULL);
scale[i] = gst_element_factory_make("videoscale", NULL);
scalefilter[i] = gst_element_factory_make("capsfilter", NULL);
GstCaps *caps = gst_caps_new_simple("video/x-raw",
"width", G_TYPE_INT, 640,
"height", G_TYPE_INT, 480,
//"format", G_TYPE_STRING, "BGR",
NULL);
caps = gst_caps_fixate(caps);
g_object_set(G_OBJECT(scalefilter[i]), "caps", caps, NULL);
gst_caps_unref(caps);
}
gst_bin_add_many(GST_BIN(pipeline), queue[0], queue[1], scale[0], scale[1],
scalefilter[0], scalefilter[1], mixer, videosink, NULL);
return true;
}
static GstCaps *
gst_mfxpostproc_transform_caps_impl (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps)
{
GstMfxPostproc *const vpp = GST_MFXPOSTPROC (trans);
GstVideoInfo vi, peer_vi;
GstVideoFormat out_format;
GstCaps *out_caps, *peer_caps;
GstMfxCapsFeature feature;
const gchar *feature_str;
guint width, height;
/* Generate the sink pad caps, that could be fixated afterwards */
if (direction == GST_PAD_SRC) {
if (!ensure_allowed_sinkpad_caps (vpp))
return NULL;
return gst_caps_ref (vpp->allowed_sinkpad_caps);
}
/* Generate complete set of src pad caps if non-fixated sink pad
* caps are provided */
if (!gst_caps_is_fixed (caps)) {
if (!ensure_allowed_srcpad_caps (vpp))
return NULL;
return gst_caps_ref (vpp->allowed_srcpad_caps);
}
/* Generate the expected src pad caps, from the current fixated
* sink pad caps */
if (!gst_video_info_from_caps (&vi, caps))
return NULL;
if (vpp->deinterlace_mode)
GST_VIDEO_INFO_INTERLACE_MODE (&vi) = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
/* Update size from user-specified parameters */
find_best_size (vpp, &vi, &width, &height);
/* Update format from user-specified parameters */
peer_caps = gst_pad_peer_query_caps (GST_BASE_TRANSFORM_SRC_PAD (trans),
vpp->allowed_srcpad_caps);
if (gst_caps_is_any (peer_caps) || gst_caps_is_empty (peer_caps))
return peer_caps;
if (!gst_caps_is_fixed (peer_caps))
peer_caps = gst_caps_fixate (peer_caps);
gst_video_info_from_caps (&peer_vi, peer_caps);
out_format = GST_VIDEO_INFO_FPS_N (&peer_vi);
/* Update width and height from the caps */
if (GST_VIDEO_INFO_HEIGHT (&peer_vi) != 1 &&
GST_VIDEO_INFO_WIDTH (&peer_vi) != 1)
find_best_size(vpp, &peer_vi, &width, &height);
if (vpp->format != DEFAULT_FORMAT)
out_format = vpp->format;
if (vpp->fps_n) {
GST_VIDEO_INFO_FPS_N (&vi) = vpp->fps_n;
GST_VIDEO_INFO_FPS_D (&vi) = vpp->fps_d;
vpp->field_duration = gst_util_uint64_scale (GST_SECOND,
vpp->fps_d, vpp->fps_n);
if (DEFAULT_FRC_ALG == vpp->alg)
vpp->alg = GST_MFX_FRC_PRESERVE_TIMESTAMP;
}
if (peer_caps)
gst_caps_unref (peer_caps);
feature =
gst_mfx_find_preferred_caps_feature (GST_BASE_TRANSFORM_SRC_PAD (trans),
&out_format);
gst_video_info_change_format (&vi, out_format, width, height);
out_caps = gst_video_info_to_caps (&vi);
if (!out_caps)
return NULL;
if (feature) {
feature_str = gst_mfx_caps_feature_to_string (feature);
if (feature_str)
gst_caps_set_features (out_caps, 0,
gst_caps_features_new (feature_str, NULL));
}
if (vpp->format != out_format)
vpp->format = out_format;
return out_caps;
}
static gboolean
gst_sbc_enc_set_format (GstAudioEncoder * audio_enc, GstAudioInfo * info)
{
const gchar *allocation_method, *channel_mode;
GstSbcEnc *enc = GST_SBC_ENC (audio_enc);
GstStructure *s;
GstCaps *caps, *filter_caps;
GstCaps *output_caps = NULL;
guint sampleframes_per_frame;
enc->rate = GST_AUDIO_INFO_RATE (info);
enc->channels = GST_AUDIO_INFO_CHANNELS (info);
/* negotiate output format based on downstream caps restrictions */
caps = gst_pad_get_allowed_caps (GST_AUDIO_ENCODER_SRC_PAD (enc));
if (caps == GST_CAPS_NONE || gst_caps_is_empty (caps))
goto failure;
if (caps == NULL)
caps = gst_static_pad_template_get_caps (&sbc_enc_src_factory);
/* fixate output caps */
filter_caps = gst_caps_new_simple ("audio/x-sbc", "rate", G_TYPE_INT,
enc->rate, "channels", G_TYPE_INT, enc->channels, NULL);
output_caps = gst_caps_intersect (caps, filter_caps);
gst_caps_unref (filter_caps);
if (output_caps == NULL || gst_caps_is_empty (output_caps)) {
GST_WARNING_OBJECT (enc, "Couldn't negotiate output caps with input rate "
"%d and input channels %d and allowed output caps %" GST_PTR_FORMAT,
enc->rate, enc->channels, caps);
goto failure;
}
gst_caps_unref (caps);
caps = NULL;
GST_DEBUG_OBJECT (enc, "fixating caps %" GST_PTR_FORMAT, output_caps);
output_caps = gst_caps_truncate (output_caps);
s = gst_caps_get_structure (output_caps, 0);
if (enc->channels == 1)
gst_structure_fixate_field_string (s, "channel-mode", "mono");
else
gst_structure_fixate_field_string (s, "channel-mode", "joint");
gst_structure_fixate_field_nearest_int (s, "bitpool", 64);
gst_structure_fixate_field_nearest_int (s, "blocks", 16);
gst_structure_fixate_field_nearest_int (s, "subbands", 8);
gst_structure_fixate_field_string (s, "allocation-method", "loudness");
s = NULL;
/* in case there's anything else left to fixate */
output_caps = gst_caps_fixate (output_caps);
gst_caps_set_simple (output_caps, "parsed", G_TYPE_BOOLEAN, TRUE, NULL);
GST_INFO_OBJECT (enc, "output caps %" GST_PTR_FORMAT, output_caps);
/* let's see what we fixated to */
s = gst_caps_get_structure (output_caps, 0);
gst_structure_get_int (s, "blocks", &enc->blocks);
gst_structure_get_int (s, "subbands", &enc->subbands);
gst_structure_get_int (s, "bitpool", &enc->bitpool);
allocation_method = gst_structure_get_string (s, "allocation-method");
channel_mode = gst_structure_get_string (s, "channel-mode");
/* We want channel-mode and channels coherent */
if (enc->channels == 1) {
if (g_strcmp0 (channel_mode, "mono") != 0) {
GST_ERROR_OBJECT (enc, "Can't have channel-mode '%s' for 1 channel",
channel_mode);
goto failure;
}
} else {
if (g_strcmp0 (channel_mode, "joint") != 0 &&
g_strcmp0 (channel_mode, "stereo") != 0 &&
g_strcmp0 (channel_mode, "dual") != 0) {
GST_ERROR_OBJECT (enc, "Can't have channel-mode '%s' for 2 channels",
channel_mode);
goto failure;
}
}
/* we want to be handed all available samples in handle_frame, but always
* enough to encode a frame */
sampleframes_per_frame = enc->blocks * enc->subbands;
gst_audio_encoder_set_frame_samples_min (audio_enc, sampleframes_per_frame);
gst_audio_encoder_set_frame_samples_max (audio_enc, sampleframes_per_frame);
gst_audio_encoder_set_frame_max (audio_enc, 0);
/* FIXME: what to do with left-over samples at the end? can we encode them? */
gst_audio_encoder_set_hard_min (audio_enc, TRUE);
/* and configure encoder based on the output caps we negotiated */
if (enc->rate == 16000)
enc->sbc.frequency = SBC_FREQ_16000;
else if (enc->rate == 32000)
enc->sbc.frequency = SBC_FREQ_32000;
else if (enc->rate == 44100)
enc->sbc.frequency = SBC_FREQ_44100;
else if (enc->rate == 48000)
enc->sbc.frequency = SBC_FREQ_48000;
else
goto failure;
if (enc->blocks == 4)
enc->sbc.blocks = SBC_BLK_4;
else if (enc->blocks == 8)
enc->sbc.blocks = SBC_BLK_8;
else if (enc->blocks == 12)
enc->sbc.blocks = SBC_BLK_12;
else if (enc->blocks == 16)
enc->sbc.blocks = SBC_BLK_16;
else
goto failure;
enc->sbc.subbands = (enc->subbands == 4) ? SBC_SB_4 : SBC_SB_8;
enc->sbc.bitpool = enc->bitpool;
if (channel_mode == NULL || allocation_method == NULL)
goto failure;
if (strcmp (channel_mode, "joint") == 0)
enc->sbc.mode = SBC_MODE_JOINT_STEREO;
else if (strcmp (channel_mode, "stereo") == 0)
enc->sbc.mode = SBC_MODE_STEREO;
else if (strcmp (channel_mode, "dual") == 0)
enc->sbc.mode = SBC_MODE_DUAL_CHANNEL;
else if (strcmp (channel_mode, "mono") == 0)
enc->sbc.mode = SBC_MODE_MONO;
else if (strcmp (channel_mode, "auto") == 0)
enc->sbc.mode = SBC_MODE_JOINT_STEREO;
else
goto failure;
if (strcmp (allocation_method, "loudness") == 0)
enc->sbc.allocation = SBC_AM_LOUDNESS;
else if (strcmp (allocation_method, "snr") == 0)
enc->sbc.allocation = SBC_AM_SNR;
else
goto failure;
if (!gst_audio_encoder_set_output_format (audio_enc, output_caps))
goto failure;
return gst_audio_encoder_negotiate (audio_enc);
failure:
if (output_caps)
gst_caps_unref (output_caps);
if (caps)
gst_caps_unref (caps);
return FALSE;
}
static gboolean gst_imx_vpu_h264_enc_set_open_params(GstImxVpuBaseEnc *vpu_base_enc, VpuEncOpenParam *open_param)
{
GstCaps *template_caps, *allowed_caps;
GstImxVpuH264Enc *enc = GST_IMX_VPU_H264_ENC(vpu_base_enc);
open_param->eFormat = VPU_V_AVC;
open_param->eColorFormat = VPU_COLOR_420;
/* These are default settings from VPU_EncOpenSimp */
open_param->VpuEncStdParam.avcParam.avc_constrainedIntraPredFlag = 0;
open_param->VpuEncStdParam.avcParam.avc_disableDeblk = 0;
open_param->VpuEncStdParam.avcParam.avc_deblkFilterOffsetAlpha = 6;
open_param->VpuEncStdParam.avcParam.avc_deblkFilterOffsetBeta = 0;
open_param->VpuEncStdParam.avcParam.avc_chromaQpOffset = 10;
open_param->VpuEncStdParam.avcParam.avc_audEnable = 0;
open_param->VpuEncStdParam.avcParam.avc_fmoEnable = 0;
open_param->VpuEncStdParam.avcParam.avc_fmoType = 0;
open_param->VpuEncStdParam.avcParam.avc_fmoSliceNum = 1;
open_param->VpuEncStdParam.avcParam.avc_fmoSliceSaveBufSize = 32;
/* Since this call is part of set_format, it is a suitable place for looking up whether or not
* downstream requires access units. The src caps are retrieved and examined for this purpose. */
template_caps = gst_static_pad_template_get_caps(&static_src_template);
allowed_caps = gst_pad_get_allowed_caps(GST_VIDEO_ENCODER_SRC_PAD(GST_VIDEO_ENCODER(vpu_base_enc)));
if (allowed_caps == template_caps)
{
enc->produce_access_units = TRUE;
}
else if (allowed_caps != NULL)
{
GstStructure *s;
gchar const *alignment_str;
if (gst_caps_is_empty(allowed_caps))
{
GST_ERROR_OBJECT(enc, "src caps are empty");
gst_caps_unref(allowed_caps);
return FALSE;
}
allowed_caps = gst_caps_make_writable(allowed_caps);
allowed_caps = gst_caps_fixate(allowed_caps);
s = gst_caps_get_structure(allowed_caps, 0);
alignment_str = gst_structure_get_string(s, "alignment");
enc->produce_access_units = !g_strcmp0(alignment_str, "au");
gst_caps_unref(allowed_caps);
}
if (enc->produce_access_units)
open_param->VpuEncStdParam.avcParam.avc_audEnable = 1;
GST_INFO_OBJECT(vpu_base_enc, "produce h.264 access units: %s", enc->produce_access_units ? "yes" : "no");
gst_caps_unref(template_caps);
return TRUE;
}
static gboolean
stereosplit_set_output_caps (GstGLStereoSplit * split, GstCaps * sinkcaps)
{
GstCaps *left = NULL, *right = NULL, *tridcaps = NULL;
GstCaps *tmp, *combined;
gboolean res = FALSE;
/* Choose some preferred output caps.
* Keep input width/height and PAR, preserve preferred output
* multiview flags for flipping/flopping if any, and set each
* left right pad to either left/mono and right/mono, as they prefer
*/
/* Calculate what downstream can collectively support */
left =
stereosplit_get_src_caps (split, split->left_pad,
GST_VIDEO_MULTIVIEW_MODE_LEFT);
if (left == NULL)
goto fail;
right =
stereosplit_get_src_caps (split, split->right_pad,
GST_VIDEO_MULTIVIEW_MODE_RIGHT);
if (right == NULL)
goto fail;
tridcaps = stereosplit_transform_caps (split, GST_PAD_SINK, sinkcaps, NULL);
if (!tridcaps || gst_caps_is_empty (tridcaps)) {
GST_ERROR_OBJECT (split,
"Failed to transform input caps %" GST_PTR_FORMAT, sinkcaps);
goto fail;
}
/* Preserve downstream preferred flipping/flopping */
tmp =
strip_mview_fields (gst_caps_ref (left),
GST_VIDEO_MULTIVIEW_FLAGS_LEFT_FLIPPED |
GST_VIDEO_MULTIVIEW_FLAGS_LEFT_FLOPPED);
combined = gst_caps_intersect (tridcaps, tmp);
gst_caps_unref (tridcaps);
gst_caps_unref (tmp);
tridcaps = combined;
tmp =
strip_mview_fields (gst_caps_ref (right),
GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_FLIPPED |
GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_FLOPPED);
combined = gst_caps_intersect (tridcaps, tmp);
gst_caps_unref (tridcaps);
gst_caps_unref (tmp);
tridcaps = combined;
if (G_UNLIKELY (gst_caps_is_empty (tridcaps))) {
gst_caps_unref (tridcaps);
goto fail;
}
/* Now generate the version for each output pad */
GST_DEBUG_OBJECT (split, "Attempting to set output caps %" GST_PTR_FORMAT,
tridcaps);
tmp = gst_caps_intersect (tridcaps, left);
gst_caps_unref (left);
left = tmp;
left = gst_caps_fixate (left);
if (!gst_pad_set_caps (split->left_pad, left)) {
GST_ERROR_OBJECT (split,
"Failed to set left output caps %" GST_PTR_FORMAT, left);
goto fail;
}
tmp = gst_caps_intersect (tridcaps, right);
gst_caps_unref (right);
right = tmp;
right = gst_caps_fixate (right);
if (!gst_pad_set_caps (split->right_pad, right)) {
GST_ERROR_OBJECT (split,
"Failed to set right output caps %" GST_PTR_FORMAT, right);
goto fail;
}
/* FIXME: Provide left and right caps to do_bufferpool */
stereosplit_do_bufferpool (split, left);
res = TRUE;
fail:
if (left)
gst_caps_unref (left);
if (right)
gst_caps_unref (right);
if (tridcaps)
gst_caps_unref (tridcaps);
return res;
}
static gboolean
gst_ffmpegvidenc_set_format (GstVideoEncoder * encoder,
GstVideoCodecState * state)
{
GstCaps *other_caps;
GstCaps *allowed_caps;
GstCaps *icaps;
GstVideoCodecState *output_format;
enum AVPixelFormat pix_fmt;
GstFFMpegVidEnc *ffmpegenc = (GstFFMpegVidEnc *) encoder;
GstFFMpegVidEncClass *oclass =
(GstFFMpegVidEncClass *) G_OBJECT_GET_CLASS (ffmpegenc);
/* close old session */
if (ffmpegenc->opened) {
gst_ffmpeg_avcodec_close (ffmpegenc->context);
ffmpegenc->opened = FALSE;
if (avcodec_get_context_defaults3 (ffmpegenc->context,
oclass->in_plugin) < 0) {
GST_DEBUG_OBJECT (ffmpegenc, "Failed to set context defaults");
return FALSE;
}
}
/* if we set it in _getcaps we should set it also in _link */
ffmpegenc->context->strict_std_compliance = ffmpegenc->compliance;
/* user defined properties */
ffmpegenc->context->bit_rate = ffmpegenc->bitrate;
ffmpegenc->context->bit_rate_tolerance = ffmpegenc->bitrate;
ffmpegenc->context->gop_size = ffmpegenc->gop_size;
ffmpegenc->context->me_method = ffmpegenc->me_method;
GST_DEBUG_OBJECT (ffmpegenc, "Setting avcontext to bitrate %d, gop_size %d",
ffmpegenc->bitrate, ffmpegenc->gop_size);
if (ffmpegenc->max_threads == 0) {
if (!(oclass->in_plugin->capabilities & CODEC_CAP_AUTO_THREADS))
ffmpegenc->context->thread_count = gst_ffmpeg_auto_max_threads ();
else
ffmpegenc->context->thread_count = 0;
} else
ffmpegenc->context->thread_count = ffmpegenc->max_threads;
/* RTP payload used for GOB production (for Asterisk) */
if (ffmpegenc->rtp_payload_size) {
ffmpegenc->context->rtp_payload_size = ffmpegenc->rtp_payload_size;
}
/* additional avcodec settings */
/* first fill in the majority by copying over */
gst_ffmpeg_cfg_fill_context (ffmpegenc, ffmpegenc->context);
/* then handle some special cases */
ffmpegenc->context->lmin = (ffmpegenc->lmin * FF_QP2LAMBDA + 0.5);
ffmpegenc->context->lmax = (ffmpegenc->lmax * FF_QP2LAMBDA + 0.5);
if (ffmpegenc->interlaced) {
ffmpegenc->context->flags |=
CODEC_FLAG_INTERLACED_DCT | CODEC_FLAG_INTERLACED_ME;
}
/* some other defaults */
ffmpegenc->context->rc_strategy = 2;
ffmpegenc->context->b_frame_strategy = 0;
ffmpegenc->context->coder_type = 0;
ffmpegenc->context->context_model = 0;
ffmpegenc->context->scenechange_threshold = 0;
/* and last but not least the pass; CBR, 2-pass, etc */
ffmpegenc->context->flags |= ffmpegenc->pass;
switch (ffmpegenc->pass) {
/* some additional action depends on type of pass */
case CODEC_FLAG_QSCALE:
ffmpegenc->context->global_quality
= ffmpegenc->picture->quality = FF_QP2LAMBDA * ffmpegenc->quantizer;
break;
case CODEC_FLAG_PASS1: /* need to prepare a stats file */
/* we don't close when changing caps, fingers crossed */
if (!ffmpegenc->file)
ffmpegenc->file = g_fopen (ffmpegenc->filename, "w");
if (!ffmpegenc->file)
goto open_file_err;
break;
case CODEC_FLAG_PASS2:
{ /* need to read the whole stats file ! */
gsize size;
if (!g_file_get_contents (ffmpegenc->filename,
&ffmpegenc->context->stats_in, &size, NULL))
goto file_read_err;
break;
}
default:
break;
}
GST_DEBUG_OBJECT (ffmpegenc, "Extracting common video information");
/* fetch pix_fmt, fps, par, width, height... */
gst_ffmpeg_videoinfo_to_context (&state->info, ffmpegenc->context);
/* sanitize time base */
if (ffmpegenc->context->time_base.num <= 0
|| ffmpegenc->context->time_base.den <= 0)
goto insane_timebase;
if ((oclass->in_plugin->id == AV_CODEC_ID_MPEG4)
&& (ffmpegenc->context->time_base.den > 65535)) {
/* MPEG4 Standards do not support time_base denominator greater than
* (1<<16) - 1 . We therefore scale them down.
* Agreed, it will not be the exact framerate... but the difference
* shouldn't be that noticeable */
ffmpegenc->context->time_base.num =
(gint) gst_util_uint64_scale_int (ffmpegenc->context->time_base.num,
65535, ffmpegenc->context->time_base.den);
ffmpegenc->context->time_base.den = 65535;
GST_LOG_OBJECT (ffmpegenc, "MPEG4 : scaled down framerate to %d / %d",
ffmpegenc->context->time_base.den, ffmpegenc->context->time_base.num);
}
pix_fmt = ffmpegenc->context->pix_fmt;
/* max-key-interval may need the framerate set above */
if (ffmpegenc->max_key_interval) {
AVCodecContext *ctx;
/* override gop-size */
ctx = ffmpegenc->context;
ctx->gop_size = (ffmpegenc->max_key_interval < 0) ?
(-ffmpegenc->max_key_interval
* (ctx->time_base.den * ctx->ticks_per_frame / ctx->time_base.num))
: ffmpegenc->max_key_interval;
}
/* some codecs support more than one format, first auto-choose one */
GST_DEBUG_OBJECT (ffmpegenc, "picking an output format ...");
allowed_caps = gst_pad_get_allowed_caps (GST_VIDEO_ENCODER_SRC_PAD (encoder));
if (!allowed_caps) {
GST_DEBUG_OBJECT (ffmpegenc, "... 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_VIDEO_ENCODER_SRC_PAD (encoder));
}
GST_DEBUG_OBJECT (ffmpegenc, "chose caps %" GST_PTR_FORMAT, allowed_caps);
gst_ffmpeg_caps_with_codecid (oclass->in_plugin->id,
oclass->in_plugin->type, allowed_caps, ffmpegenc->context);
/* open codec */
if (gst_ffmpeg_avcodec_open (ffmpegenc->context, oclass->in_plugin) < 0) {
gst_caps_unref (allowed_caps);
goto open_codec_fail;
}
/* is the colourspace correct? */
if (pix_fmt != ffmpegenc->context->pix_fmt) {
gst_caps_unref (allowed_caps);
goto pix_fmt_err;
}
/* we may have failed mapping caps to a pixfmt,
* and quite some codecs do not make up their own mind about that
* in any case, _NONE can never work out later on */
if (pix_fmt == AV_PIX_FMT_NONE) {
gst_caps_unref (allowed_caps);
goto bad_input_fmt;
}
/* second pass stats buffer no longer needed */
g_free (ffmpegenc->context->stats_in);
/* try to set this caps on the other side */
other_caps = gst_ffmpeg_codecid_to_caps (oclass->in_plugin->id,
ffmpegenc->context, TRUE);
if (!other_caps) {
gst_caps_unref (allowed_caps);
goto unsupported_codec;
}
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);
goto unsupported_codec;
}
icaps = gst_caps_fixate (icaps);
GST_DEBUG_OBJECT (ffmpegenc, "codec flags 0x%08x", ffmpegenc->context->flags);
/* Store input state and set output state */
if (ffmpegenc->input_state)
gst_video_codec_state_unref (ffmpegenc->input_state);
ffmpegenc->input_state = gst_video_codec_state_ref (state);
output_format = gst_video_encoder_set_output_state (encoder, icaps, state);
gst_video_codec_state_unref (output_format);
/* 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) ffmpegenc->context->bit_rate, NULL);
if ((codec =
gst_ffmpeg_get_codecid_longname (ffmpegenc->context->codec_id)))
gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_VIDEO_CODEC, codec,
NULL);
gst_video_encoder_merge_tags (encoder, tags, GST_TAG_MERGE_REPLACE);
gst_tag_list_unref (tags);
}
/* success! */
ffmpegenc->opened = TRUE;
return TRUE;
/* ERRORS */
open_file_err:
{
GST_ELEMENT_ERROR (ffmpegenc, RESOURCE, OPEN_WRITE,
(("Could not open file \"%s\" for writing."), ffmpegenc->filename),
GST_ERROR_SYSTEM);
return FALSE;
}
file_read_err:
{
GST_ELEMENT_ERROR (ffmpegenc, RESOURCE, READ,
(("Could not get contents of file \"%s\"."), ffmpegenc->filename),
GST_ERROR_SYSTEM);
return FALSE;
}
insane_timebase:
{
GST_ERROR_OBJECT (ffmpegenc, "Rejecting time base %d/%d",
ffmpegenc->context->time_base.den, ffmpegenc->context->time_base.num);
goto cleanup_stats_in;
}
unsupported_codec:
{
GST_DEBUG ("Unsupported codec - no caps found");
goto cleanup_stats_in;
}
open_codec_fail:
{
GST_DEBUG_OBJECT (ffmpegenc, "avenc_%s: Failed to open libav codec",
oclass->in_plugin->name);
goto close_codec;
}
pix_fmt_err:
{
GST_DEBUG_OBJECT (ffmpegenc,
"avenc_%s: AV wants different colourspace (%d given, %d wanted)",
oclass->in_plugin->name, pix_fmt, ffmpegenc->context->pix_fmt);
goto close_codec;
}
bad_input_fmt:
{
GST_DEBUG_OBJECT (ffmpegenc, "avenc_%s: Failed to determine input format",
oclass->in_plugin->name);
goto close_codec;
}
close_codec:
{
gst_ffmpeg_avcodec_close (ffmpegenc->context);
if (avcodec_get_context_defaults3 (ffmpegenc->context,
oclass->in_plugin) < 0)
GST_DEBUG_OBJECT (ffmpegenc, "Failed to set context defaults");
goto cleanup_stats_in;
}
cleanup_stats_in:
{
g_free (ffmpegenc->context->stats_in);
return FALSE;
}
}
/*!
* \brief CvVideoWriter_GStreamer::open
* \param filename filename to output to
* \param fourcc desired codec fourcc
* \param fps desired framerate
* \param frameSize the size of the expected frames
* \param is_color color or grayscale
* \return success
*
* We support 2 modes of operation. Either the user enters a filename and a fourcc
* code, or enters a manual pipeline description like in CvVideoCapture_Gstreamer.
* In the latter case, we just push frames on the appsink with appropriate caps.
* In the former case, we try to deduce the correct container from the filename,
* and the correct encoder from the fourcc profile.
*
* If the file extension did was not recognize, an avi container is used
*
*/
bool CvVideoWriter_GStreamer::open( const char * filename, int fourcc,
double fps, CvSize frameSize, bool is_color )
{
CV_FUNCNAME("CvVideoWriter_GStreamer::open");
// check arguments
assert (filename);
assert (fps > 0);
assert (frameSize.width > 0 && frameSize.height > 0);
// init gstreamer
gst_initializer::init();
// init vars
bool manualpipeline = true;
int bufsize = 0;
GError *err = NULL;
const char* mime = NULL;
GstStateChangeReturn stateret;
GstCaps* caps = NULL;
GstCaps* videocaps = NULL;
#if FULL_GST_VERSION >= VERSION_NUM(0,10,32)
GstCaps* containercaps = NULL;
GstEncodingContainerProfile* containerprofile = NULL;
GstEncodingVideoProfile* videoprofile = NULL;
#endif
GstIterator* it = NULL;
gboolean done = FALSE;
GstElement *element = NULL;
gchar* name = NULL;
GstElement* splitter = NULL;
GstElement* combiner = NULL;
// we first try to construct a pipeline from the given string.
// if that fails, we assume it is an ordinary filename
__BEGIN__;
encodebin = gst_parse_launch(filename, &err);
manualpipeline = (encodebin != NULL);
if(manualpipeline)
{
#if GST_VERSION_MAJOR == 0
it = gst_bin_iterate_sources(GST_BIN(encodebin));
if(gst_iterator_next(it, (gpointer *)&source) != GST_ITERATOR_OK) {
CV_ERROR(CV_StsError, "GStreamer: cannot find appsink in manual pipeline\n");
return false;
}
#else
it = gst_bin_iterate_sources (GST_BIN(encodebin));
GValue value = G_VALUE_INIT;
while (!done) {
switch (gst_iterator_next (it, &value)) {
case GST_ITERATOR_OK:
element = GST_ELEMENT (g_value_get_object (&value));
name = gst_element_get_name(element);
if (name){
if(strstr(name, "opencvsrc") != NULL || strstr(name, "appsrc") != NULL) {
source = GST_ELEMENT ( gst_object_ref (element) );
done = TRUE;
}
g_free(name);
}
g_value_unset (&value);
break;
case GST_ITERATOR_RESYNC:
gst_iterator_resync (it);
break;
case GST_ITERATOR_ERROR:
case GST_ITERATOR_DONE:
done = TRUE;
break;
}
}
gst_iterator_free (it);
if (!source){
CV_ERROR(CV_StsError, "GStreamer: cannot find appsrc in manual pipeline\n");
return false;
}
#endif
pipeline = encodebin;
}
else
{
pipeline = gst_pipeline_new (NULL);
// we just got a filename and a fourcc code.
// first, try to guess the container from the filename
//encodebin = gst_element_factory_make("encodebin", NULL);
//proxy old non existing fourcc ids. These were used in previous opencv versions,
//but do not even exist in gstreamer any more
if (fourcc == CV_FOURCC('M','P','1','V')) fourcc = CV_FOURCC('M', 'P', 'G' ,'1');
if (fourcc == CV_FOURCC('M','P','2','V')) fourcc = CV_FOURCC('M', 'P', 'G' ,'2');
if (fourcc == CV_FOURCC('D','R','A','C')) fourcc = CV_FOURCC('d', 'r', 'a' ,'c');
//create encoder caps from fourcc
videocaps = gst_riff_create_video_caps(fourcc, NULL, NULL, NULL, NULL, NULL);
if (!videocaps){
CV_ERROR( CV_StsUnsupportedFormat, "Gstreamer Opencv backend does not support this codec.");
}
//create container caps from file extension
mime = filenameToMimetype(filename);
if (!mime) {
CV_ERROR( CV_StsUnsupportedFormat, "Gstreamer Opencv backend does not support this file type.");
}
#if FULL_GST_VERSION >= VERSION_NUM(0,10,32)
containercaps = gst_caps_from_string(mime);
//create encodebin profile
containerprofile = gst_encoding_container_profile_new("container", "container", containercaps, NULL);
videoprofile = gst_encoding_video_profile_new(videocaps, NULL, NULL, 1);
gst_encoding_container_profile_add_profile(containerprofile, (GstEncodingProfile *) videoprofile);
#endif
//create pipeline elements
encodebin = gst_element_factory_make("encodebin", NULL);
#if FULL_GST_VERSION >= VERSION_NUM(0,10,32)
g_object_set(G_OBJECT(encodebin), "profile", containerprofile, NULL);
#endif
source = gst_element_factory_make("appsrc", NULL);
file = gst_element_factory_make("filesink", NULL);
g_object_set(G_OBJECT(file), "location", filename, NULL);
}
if (is_color)
{
input_pix_fmt = GST_VIDEO_FORMAT_BGR;
bufsize = frameSize.width * frameSize.height * 3;
#if GST_VERSION_MAJOR == 0
caps = gst_video_format_new_caps(GST_VIDEO_FORMAT_BGR,
frameSize.width,
frameSize.height,
int(fps), 1,
1, 1);
#else
caps = gst_caps_new_simple("video/x-raw",
"format", G_TYPE_STRING, "BGR",
"width", G_TYPE_INT, frameSize.width,
"height", G_TYPE_INT, frameSize.height,
"framerate", GST_TYPE_FRACTION, int(fps), 1,
NULL);
caps = gst_caps_fixate(caps);
#endif
}
else
{
#if FULL_GST_VERSION >= VERSION_NUM(0,10,29)
input_pix_fmt = GST_VIDEO_FORMAT_GRAY8;
bufsize = frameSize.width * frameSize.height;
#if GST_VERSION_MAJOR == 0
caps = gst_video_format_new_caps(GST_VIDEO_FORMAT_GRAY8,
frameSize.width,
frameSize.height,
int(fps), 1,
1, 1);
#else
caps = gst_caps_new_simple("video/x-raw",
"format", G_TYPE_STRING, "GRAY8",
"width", G_TYPE_INT, frameSize.width,
"height", G_TYPE_INT, frameSize.height,
"framerate", GST_TYPE_FRACTION, int(fps), 1,
NULL);
caps = gst_caps_fixate(caps);
#endif
#else
CV_Assert(!"Gstreamer 0.10.29 or newer is required for grayscale input");
#endif
}
gst_app_src_set_caps(GST_APP_SRC(source), caps);
gst_app_src_set_stream_type(GST_APP_SRC(source), GST_APP_STREAM_TYPE_STREAM);
gst_app_src_set_size (GST_APP_SRC(source), -1);
g_object_set(G_OBJECT(source), "format", GST_FORMAT_TIME, NULL);
g_object_set(G_OBJECT(source), "block", 1, NULL);
g_object_set(G_OBJECT(source), "is-live", 0, NULL);
if(!manualpipeline)
{
g_object_set(G_OBJECT(file), "buffer-size", bufsize, NULL);
gst_bin_add_many(GST_BIN(pipeline), source, encodebin, file, NULL);
if(!gst_element_link_many(source, encodebin, file, NULL)) {
CV_ERROR(CV_StsError, "GStreamer: cannot link elements\n");
}
}
#if GST_VERSION_MAJOR == 0
// HACK: remove streamsplitter and streamcombiner from
// encodebin pipeline to prevent early EOF event handling
// We always fetch BGR or gray-scale frames, so combiner->spliter
// endge in graph is useless.
it = gst_bin_iterate_recurse (GST_BIN(encodebin));
while (!done) {
switch (gst_iterator_next (it, (void**)&element)) {
case GST_ITERATOR_OK:
name = gst_element_get_name(element);
if (strstr(name, "streamsplitter"))
splitter = element;
else if (strstr(name, "streamcombiner"))
combiner = element;
break;
case GST_ITERATOR_RESYNC:
gst_iterator_resync (it);
break;
case GST_ITERATOR_ERROR:
done = true;
break;
case GST_ITERATOR_DONE:
done = true;
break;
}
}
gst_iterator_free (it);
if (splitter && combiner)
{
gst_element_unlink(splitter, combiner);
GstPad* src = gst_element_get_pad(combiner, "src");
GstPad* sink = gst_element_get_pad(combiner, "encodingsink");
GstPad* srcPeer = gst_pad_get_peer(src);
GstPad* sinkPeer = gst_pad_get_peer(sink);
gst_pad_unlink(sinkPeer, sink);
gst_pad_unlink(src, srcPeer);
gst_pad_link(sinkPeer, srcPeer);
src = gst_element_get_pad(splitter, "encodingsrc");
sink = gst_element_get_pad(splitter, "sink");
srcPeer = gst_pad_get_peer(src);
sinkPeer = gst_pad_get_peer(sink);
gst_pad_unlink(sinkPeer, sink);
gst_pad_unlink(src, srcPeer);
gst_pad_link(sinkPeer, srcPeer);
}
#endif
stateret = gst_element_set_state(GST_ELEMENT(pipeline), GST_STATE_PLAYING);
if(stateret == GST_STATE_CHANGE_FAILURE) {
handleMessage(pipeline);
CV_ERROR(CV_StsError, "GStreamer: cannot put pipeline to play\n");
}
framerate = fps;
num_frames = 0;
handleMessage(pipeline);
__END__;
return true;
}
static GstFlowReturn
gst_v4l2_video_dec_handle_frame (GstVideoDecoder * decoder,
GstVideoCodecFrame * frame)
{
GstV4l2Error error = GST_V4L2_ERROR_INIT;
GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (decoder);
GstFlowReturn ret = GST_FLOW_OK;
gboolean processed = FALSE;
GstBuffer *tmp;
GST_DEBUG_OBJECT (self, "Handling frame %d", frame->system_frame_number);
if (G_UNLIKELY (!g_atomic_int_get (&self->active)))
goto flushing;
if (G_UNLIKELY (!GST_V4L2_IS_ACTIVE (self->v4l2output))) {
if (!self->input_state)
goto not_negotiated;
if (!gst_v4l2_object_set_format (self->v4l2output, self->input_state->caps,
&error))
goto not_negotiated;
}
if (G_UNLIKELY (!GST_V4L2_IS_ACTIVE (self->v4l2capture))) {
GstBufferPool *pool = GST_BUFFER_POOL (self->v4l2output->pool);
GstVideoInfo info;
GstVideoCodecState *output_state;
GstBuffer *codec_data;
GstCaps *acquired_caps, *available_caps, *caps, *filter;
GstStructure *st;
GST_DEBUG_OBJECT (self, "Sending header");
codec_data = self->input_state->codec_data;
/* We are running in byte-stream mode, so we don't know the headers, but
* we need to send something, otherwise the decoder will refuse to
* intialize.
*/
if (codec_data) {
gst_buffer_ref (codec_data);
} else {
codec_data = gst_buffer_ref (frame->input_buffer);
processed = TRUE;
}
/* Ensure input internal pool is active */
if (!gst_buffer_pool_is_active (pool)) {
GstStructure *config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, self->input_state->caps,
self->v4l2output->info.size, 2, 2);
/* There is no reason to refuse this config */
if (!gst_buffer_pool_set_config (pool, config))
goto activate_failed;
if (!gst_buffer_pool_set_active (pool, TRUE))
goto activate_failed;
}
GST_VIDEO_DECODER_STREAM_UNLOCK (decoder);
ret =
gst_v4l2_buffer_pool_process (GST_V4L2_BUFFER_POOL (self->
v4l2output->pool), &codec_data);
GST_VIDEO_DECODER_STREAM_LOCK (decoder);
gst_buffer_unref (codec_data);
/* For decoders G_FMT returns coded size, G_SELECTION returns visible size
* in the compose rectangle. gst_v4l2_object_acquire_format() checks both
* and returns the visible size as with/height and the coded size as
* padding. */
if (!gst_v4l2_object_acquire_format (self->v4l2capture, &info))
goto not_negotiated;
/* Create caps from the acquired format, remove the format field */
acquired_caps = gst_video_info_to_caps (&info);
st = gst_caps_get_structure (acquired_caps, 0);
gst_structure_remove_field (st, "format");
/* Probe currently available pixel formats */
available_caps = gst_v4l2_object_probe_caps (self->v4l2capture, NULL);
available_caps = gst_caps_make_writable (available_caps);
/* Replace coded size with visible size, we want to negotiate visible size
* with downstream, not coded size. */
gst_caps_map_in_place (available_caps, gst_v4l2_video_remove_padding, self);
filter = gst_caps_intersect_full (available_caps, acquired_caps,
GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (acquired_caps);
gst_caps_unref (available_caps);
caps = gst_pad_peer_query_caps (decoder->srcpad, filter);
gst_caps_unref (filter);
GST_DEBUG_OBJECT (self, "Possible decoded caps: %" GST_PTR_FORMAT, caps);
if (gst_caps_is_empty (caps)) {
gst_caps_unref (caps);
goto not_negotiated;
}
/* Fixate pixel format */
caps = gst_caps_fixate (caps);
GST_DEBUG_OBJECT (self, "Chosen decoded caps: %" GST_PTR_FORMAT, caps);
/* Try to set negotiated format, on success replace acquired format */
if (gst_v4l2_object_set_format (self->v4l2capture, caps, &error))
gst_video_info_from_caps (&info, caps);
else
gst_v4l2_clear_error (&error);
gst_caps_unref (caps);
output_state = gst_video_decoder_set_output_state (decoder,
info.finfo->format, info.width, info.height, self->input_state);
/* Copy the rest of the information, there might be more in the future */
output_state->info.interlace_mode = info.interlace_mode;
gst_video_codec_state_unref (output_state);
if (!gst_video_decoder_negotiate (decoder)) {
if (GST_PAD_IS_FLUSHING (decoder->srcpad))
goto flushing;
else
goto not_negotiated;
}
/* Ensure our internal pool is activated */
if (!gst_buffer_pool_set_active (GST_BUFFER_POOL (self->v4l2capture->pool),
TRUE))
goto activate_failed;
}
if (g_atomic_int_get (&self->processing) == FALSE) {
/* It's possible that the processing thread stopped due to an error */
if (self->output_flow != GST_FLOW_OK &&
self->output_flow != GST_FLOW_FLUSHING) {
GST_DEBUG_OBJECT (self, "Processing loop stopped with error, leaving");
ret = self->output_flow;
goto drop;
}
GST_DEBUG_OBJECT (self, "Starting decoding thread");
/* Start the processing task, when it quits, the task will disable input
* processing to unlock input if draining, or prevent potential block */
g_atomic_int_set (&self->processing, TRUE);
if (!gst_pad_start_task (decoder->srcpad,
(GstTaskFunction) gst_v4l2_video_dec_loop, self,
(GDestroyNotify) gst_v4l2_video_dec_loop_stopped))
goto start_task_failed;
}
if (!processed) {
GST_VIDEO_DECODER_STREAM_UNLOCK (decoder);
ret =
gst_v4l2_buffer_pool_process (GST_V4L2_BUFFER_POOL (self->v4l2output->
pool), &frame->input_buffer);
GST_VIDEO_DECODER_STREAM_LOCK (decoder);
if (ret == GST_FLOW_FLUSHING) {
if (g_atomic_int_get (&self->processing) == FALSE)
ret = self->output_flow;
goto drop;
} else if (ret != GST_FLOW_OK) {
goto process_failed;
}
}
/* No need to keep input arround */
tmp = frame->input_buffer;
frame->input_buffer = gst_buffer_new ();
gst_buffer_copy_into (frame->input_buffer, tmp,
GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS |
GST_BUFFER_COPY_META, 0, 0);
gst_buffer_unref (tmp);
gst_video_codec_frame_unref (frame);
return ret;
/* ERRORS */
not_negotiated:
{
GST_ERROR_OBJECT (self, "not negotiated");
ret = GST_FLOW_NOT_NEGOTIATED;
gst_v4l2_error (self, &error);
goto drop;
}
activate_failed:
{
GST_ELEMENT_ERROR (self, RESOURCE, SETTINGS,
(_("Failed to allocate required memory.")),
("Buffer pool activation failed"));
ret = GST_FLOW_ERROR;
goto drop;
}
flushing:
{
ret = GST_FLOW_FLUSHING;
goto drop;
}
start_task_failed:
{
GST_ELEMENT_ERROR (self, RESOURCE, FAILED,
(_("Failed to start decoding thread.")), (NULL));
g_atomic_int_set (&self->processing, FALSE);
ret = GST_FLOW_ERROR;
goto drop;
}
process_failed:
{
GST_ELEMENT_ERROR (self, RESOURCE, FAILED,
(_("Failed to process frame.")),
("Maybe be due to not enough memory or failing driver"));
ret = GST_FLOW_ERROR;
goto drop;
}
drop:
{
gst_video_decoder_drop_frame (decoder, frame);
return ret;
}
}
static GstCaps *
gst_gl_filter_fixate_caps (GstBaseTransform * bt,
GstPadDirection direction, GstCaps * caps, GstCaps * othercaps)
{
GstStructure *ins, *outs;
const GValue *from_par, *to_par;
GValue fpar = { 0, }, tpar = {
0,};
othercaps = gst_caps_truncate (othercaps);
othercaps = gst_caps_make_writable (othercaps);
GST_DEBUG_OBJECT (bt, "trying to fixate othercaps %" GST_PTR_FORMAT
" based on caps %" GST_PTR_FORMAT, othercaps, caps);
ins = gst_caps_get_structure (caps, 0);
outs = gst_caps_get_structure (othercaps, 0);
from_par = gst_structure_get_value (ins, "pixel-aspect-ratio");
to_par = gst_structure_get_value (outs, "pixel-aspect-ratio");
/* If we're fixating from the sinkpad we always set the PAR and
* assume that missing PAR on the sinkpad means 1/1 and
* missing PAR on the srcpad means undefined
*/
if (direction == GST_PAD_SINK) {
if (!from_par) {
g_value_init (&fpar, GST_TYPE_FRACTION);
gst_value_set_fraction (&fpar, 1, 1);
from_par = &fpar;
}
if (!to_par) {
g_value_init (&tpar, GST_TYPE_FRACTION);
gst_value_set_fraction (&tpar, 1, 1);
to_par = &tpar;
}
} else {
if (!to_par) {
g_value_init (&tpar, GST_TYPE_FRACTION);
gst_value_set_fraction (&tpar, 1, 1);
to_par = &tpar;
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1,
NULL);
}
if (!from_par) {
g_value_init (&fpar, GST_TYPE_FRACTION);
gst_value_set_fraction (&fpar, 1, 1);
from_par = &fpar;
}
}
/* we have both PAR but they might not be fixated */
{
gint from_w, from_h, from_par_n, from_par_d, to_par_n, to_par_d;
gint w = 0, h = 0;
gint from_dar_n, from_dar_d;
gint num, den;
/* from_par should be fixed */
g_return_val_if_fail (gst_value_is_fixed (from_par), othercaps);
from_par_n = gst_value_get_fraction_numerator (from_par);
from_par_d = gst_value_get_fraction_denominator (from_par);
gst_structure_get_int (ins, "width", &from_w);
gst_structure_get_int (ins, "height", &from_h);
gst_structure_get_int (outs, "width", &w);
gst_structure_get_int (outs, "height", &h);
/* if both width and height are already fixed, we can't do anything
* about it anymore */
if (w && h) {
gint n = 1, d = 1;
GST_DEBUG_OBJECT (bt, "dimensions already set to %dx%d, not fixating",
w, h);
if (!gst_value_is_fixed (to_par)) {
GST_DEBUG_OBJECT (bt, "fixating to_par to %dx%d", n, d);
if (gst_structure_has_field (outs, "pixel-aspect-ratio"))
gst_structure_fixate_field_nearest_fraction (outs,
"pixel-aspect-ratio", 1, 1);
else if (n != d)
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
1, 1, NULL);
}
goto done;
}
/* Calculate input DAR */
if (!gst_util_fraction_multiply (from_w, from_h, from_par_n, from_par_d,
&from_dar_n, &from_dar_d)) {
GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
goto done;
}
GST_DEBUG_OBJECT (bt, "Input DAR is %d/%d", from_dar_n, from_dar_d);
/* If either width or height are fixed there's not much we
* can do either except choosing a height or width and PAR
* that matches the DAR as good as possible
*/
if (h) {
gint num, den;
GST_DEBUG_OBJECT (bt, "height is fixed (%d)", h);
if (!gst_value_is_fixed (to_par)) {
gst_value_set_fraction (&tpar, 1, 1);
}
/* PAR is fixed, choose the height that is nearest to the
* height with the same DAR */
to_par_n = gst_value_get_fraction_numerator (to_par);
to_par_d = gst_value_get_fraction_denominator (to_par);
GST_DEBUG_OBJECT (bt, "PAR is fixed %d/%d", to_par_n, to_par_d);
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_d,
to_par_n, &num, &den)) {
GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
goto done;
}
w = (guint) gst_util_uint64_scale_int (h, num, den);
gst_structure_fixate_field_nearest_int (outs, "width", w);
goto done;
} else if (w) {
gint num, den;
GST_DEBUG_OBJECT (bt, "width is fixed (%d)", w);
if (!gst_value_is_fixed (to_par)) {
gst_value_set_fraction (&tpar, 1, 1);
}
/* PAR is fixed, choose the height that is nearest to the
* height with the same DAR */
to_par_n = gst_value_get_fraction_numerator (to_par);
to_par_d = gst_value_get_fraction_denominator (to_par);
GST_DEBUG_OBJECT (bt, "PAR is fixed %d/%d", to_par_n, to_par_d);
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_d,
to_par_n, &num, &den)) {
GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
goto done;
}
h = (guint) gst_util_uint64_scale_int (w, den, num);
gst_structure_fixate_field_nearest_int (outs, "height", h);
goto done;
} else if (gst_value_is_fixed (to_par)) {
GstStructure *tmp;
gint set_h, set_w, f_h, f_w;
to_par_n = gst_value_get_fraction_numerator (to_par);
to_par_d = gst_value_get_fraction_denominator (to_par);
/* Calculate scale factor for the PAR change */
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_n,
to_par_d, &num, &den)) {
GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
goto done;
}
/* Try to keep the input height */
tmp = gst_structure_copy (outs);
gst_structure_fixate_field_nearest_int (tmp, "height", from_h);
gst_structure_get_int (tmp, "height", &set_h);
/* This might have failed but try to scale the width
* to keep the DAR nonetheless */
w = (guint) gst_util_uint64_scale_int (set_h, num, den);
gst_structure_fixate_field_nearest_int (tmp, "width", w);
gst_structure_get_int (tmp, "width", &set_w);
gst_structure_free (tmp);
/* We kept the DAR and the height is nearest to the original height */
if (set_w == w) {
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
G_TYPE_INT, set_h, NULL);
goto done;
}
f_h = set_h;
f_w = set_w;
/* If the former failed, try to keep the input width at least */
tmp = gst_structure_copy (outs);
gst_structure_fixate_field_nearest_int (tmp, "width", from_w);
gst_structure_get_int (tmp, "width", &set_w);
/* This might have failed but try to scale the width
* to keep the DAR nonetheless */
h = (guint) gst_util_uint64_scale_int (set_w, den, num);
gst_structure_fixate_field_nearest_int (tmp, "height", h);
gst_structure_get_int (tmp, "height", &set_h);
gst_structure_free (tmp);
/* We kept the DAR and the width is nearest to the original width */
if (set_h == h) {
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
G_TYPE_INT, set_h, NULL);
goto done;
}
/* If all this failed, keep the height that was nearest to the orignal
* height and the nearest possible width. This changes the DAR but
* there's not much else to do here.
*/
gst_structure_set (outs, "width", G_TYPE_INT, f_w, "height", G_TYPE_INT,
f_h, NULL);
goto done;
} else {
GstStructure *tmp;
gint set_h, set_w, set_par_n, set_par_d, tmp2;
/* width, height and PAR are not fixed */
/* First try to keep the height and width as good as possible
* and scale PAR */
tmp = gst_structure_copy (outs);
gst_structure_fixate_field_nearest_int (tmp, "height", from_h);
gst_structure_get_int (tmp, "height", &set_h);
gst_structure_fixate_field_nearest_int (tmp, "width", from_w);
gst_structure_get_int (tmp, "width", &set_w);
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_h, set_w,
&to_par_n, &to_par_d)) {
GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
goto done;
}
if (!gst_structure_has_field (tmp, "pixel-aspect-ratio"))
gst_structure_set_value (tmp, "pixel-aspect-ratio", to_par);
gst_structure_fixate_field_nearest_fraction (tmp, "pixel-aspect-ratio",
to_par_n, to_par_d);
gst_structure_get_fraction (tmp, "pixel-aspect-ratio", &set_par_n,
&set_par_d);
gst_structure_free (tmp);
if (set_par_n == to_par_n && set_par_d == to_par_d) {
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
G_TYPE_INT, set_h, NULL);
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
set_par_n != set_par_d)
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
set_par_n, set_par_d, NULL);
goto done;
}
/* Otherwise try to scale width to keep the DAR with the set
* PAR and height */
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_par_d,
set_par_n, &num, &den)) {
GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
goto done;
}
w = (guint) gst_util_uint64_scale_int (set_h, num, den);
tmp = gst_structure_copy (outs);
gst_structure_fixate_field_nearest_int (tmp, "width", w);
gst_structure_get_int (tmp, "width", &tmp2);
gst_structure_free (tmp);
if (tmp2 == w) {
gst_structure_set (outs, "width", G_TYPE_INT, tmp2, "height",
G_TYPE_INT, set_h, NULL);
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
set_par_n != set_par_d)
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
set_par_n, set_par_d, NULL);
goto done;
}
/* ... or try the same with the height */
h = (guint) gst_util_uint64_scale_int (set_w, den, num);
tmp = gst_structure_copy (outs);
gst_structure_fixate_field_nearest_int (tmp, "height", h);
gst_structure_get_int (tmp, "height", &tmp2);
gst_structure_free (tmp);
if (tmp2 == h) {
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
G_TYPE_INT, tmp2, NULL);
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
set_par_n != set_par_d)
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
set_par_n, set_par_d, NULL);
goto done;
}
/* If all fails we can't keep the DAR and take the nearest values
* for everything from the first try */
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
G_TYPE_INT, set_h, NULL);
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
set_par_n != set_par_d)
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
set_par_n, set_par_d, NULL);
}
}
done:
othercaps = gst_caps_fixate (othercaps);
GST_DEBUG_OBJECT (bt, "fixated othercaps to %" GST_PTR_FORMAT, othercaps);
if (from_par == &fpar)
g_value_unset (&fpar);
if (to_par == &tpar)
g_value_unset (&tpar);
return othercaps;
}