2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
27 #include <libavcodec/avcodec.h>
30 #include <gst/video/video.h>
31 #include <gst/video/gstvideodecoder.h>
32 #include <gst/video/gstvideometa.h>
33 #include <gst/video/gstvideopool.h>
36 #include "gstavcodecmap.h"
37 #include "gstavutils.h"
38 #include "gstavviddec.h"
40 GST_DEBUG_CATEGORY_EXTERN (GST_CAT_PERFORMANCE);
42 #define MAX_TS_MASK 0xff
44 #define DEFAULT_LOWRES 0
45 #define DEFAULT_SKIPFRAME 0
46 #define DEFAULT_DIRECT_RENDERING TRUE
47 #define DEFAULT_DEBUG_MV FALSE
48 #define DEFAULT_MAX_THREADS 0
49 #define DEFAULT_OUTPUT_CORRUPT TRUE
50 #define REQUIRED_POOL_MAX_BUFFERS 32
57 PROP_DIRECT_RENDERING,
64 /* A number of function prototypes are given so we can refer to them later. */
65 static void gst_ffmpegviddec_base_init (GstFFMpegVidDecClass * klass);
66 static void gst_ffmpegviddec_class_init (GstFFMpegVidDecClass * klass);
67 static void gst_ffmpegviddec_init (GstFFMpegVidDec * ffmpegdec);
68 static void gst_ffmpegviddec_finalize (GObject * object);
70 static gboolean gst_ffmpegviddec_set_format (GstVideoDecoder * decoder,
71 GstVideoCodecState * state);
72 static GstFlowReturn gst_ffmpegviddec_handle_frame (GstVideoDecoder * decoder,
73 GstVideoCodecFrame * frame);
74 static gboolean gst_ffmpegviddec_start (GstVideoDecoder * decoder);
75 static gboolean gst_ffmpegviddec_stop (GstVideoDecoder * decoder);
76 static gboolean gst_ffmpegviddec_flush (GstVideoDecoder * decoder);
77 static gboolean gst_ffmpegviddec_decide_allocation (GstVideoDecoder * decoder,
79 static gboolean gst_ffmpegviddec_propose_allocation (GstVideoDecoder * decoder,
82 static void gst_ffmpegviddec_set_property (GObject * object,
83 guint prop_id, const GValue * value, GParamSpec * pspec);
84 static void gst_ffmpegviddec_get_property (GObject * object,
85 guint prop_id, GValue * value, GParamSpec * pspec);
87 static gboolean gst_ffmpegviddec_negotiate (GstFFMpegVidDec * ffmpegdec,
88 AVCodecContext * context, AVFrame * picture, gboolean force);
90 /* some sort of bufferpool handling, but different */
91 static int gst_ffmpegviddec_get_buffer2 (AVCodecContext * context,
92 AVFrame * picture, int flags);
94 static GstFlowReturn gst_ffmpegviddec_finish (GstVideoDecoder * decoder);
95 static void gst_ffmpegviddec_drain (GstFFMpegVidDec * ffmpegdec);
97 static gboolean picture_changed (GstFFMpegVidDec * ffmpegdec,
99 static gboolean context_changed (GstFFMpegVidDec * ffmpegdec,
100 AVCodecContext * context);
102 #define GST_FFDEC_PARAMS_QDATA g_quark_from_static_string("avdec-params")
104 static GstElementClass *parent_class = NULL;
106 #define GST_FFMPEGVIDDEC_TYPE_LOWRES (gst_ffmpegviddec_lowres_get_type())
108 gst_ffmpegviddec_lowres_get_type (void)
110 static GType ffmpegdec_lowres_type = 0;
112 if (!ffmpegdec_lowres_type) {
113 static const GEnumValue ffmpegdec_lowres[] = {
115 {1, "1", "1/2-size"},
116 {2, "2", "1/4-size"},
120 ffmpegdec_lowres_type =
121 g_enum_register_static ("GstLibAVVidDecLowres", ffmpegdec_lowres);
124 return ffmpegdec_lowres_type;
127 #define GST_FFMPEGVIDDEC_TYPE_SKIPFRAME (gst_ffmpegviddec_skipframe_get_type())
129 gst_ffmpegviddec_skipframe_get_type (void)
131 static GType ffmpegdec_skipframe_type = 0;
133 if (!ffmpegdec_skipframe_type) {
134 static const GEnumValue ffmpegdec_skipframe[] = {
135 {0, "0", "Skip nothing"},
136 {1, "1", "Skip B-frames"},
137 {2, "2", "Skip IDCT/Dequantization"},
138 {5, "5", "Skip everything"},
142 ffmpegdec_skipframe_type =
143 g_enum_register_static ("GstLibAVVidDecSkipFrame", ffmpegdec_skipframe);
146 return ffmpegdec_skipframe_type;
150 gst_ffmpegviddec_base_init (GstFFMpegVidDecClass * klass)
152 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
153 GstPadTemplate *sinktempl, *srctempl;
154 GstCaps *sinkcaps, *srccaps;
156 gchar *longname, *description;
159 (AVCodec *) g_type_get_qdata (G_OBJECT_CLASS_TYPE (klass),
160 GST_FFDEC_PARAMS_QDATA);
161 g_assert (in_plugin != NULL);
163 /* construct the element details struct */
164 longname = g_strdup_printf ("libav %s decoder", in_plugin->long_name);
165 description = g_strdup_printf ("libav %s decoder", in_plugin->name);
166 gst_element_class_set_metadata (element_class, longname,
167 "Codec/Decoder/Video", description,
168 "Wim Taymans <wim.taymans@gmail.com>, "
169 "Ronald Bultje <rbultje@ronald.bitfreak.net>, "
170 "Edward Hervey <bilboed@bilboed.com>");
172 g_free (description);
175 sinkcaps = gst_ffmpeg_codecid_to_caps (in_plugin->id, NULL, FALSE);
177 GST_DEBUG ("Couldn't get sink caps for decoder '%s'", in_plugin->name);
178 sinkcaps = gst_caps_new_empty_simple ("unknown/unknown");
180 srccaps = gst_ffmpeg_codectype_to_video_caps (NULL,
181 in_plugin->id, FALSE, in_plugin);
183 GST_DEBUG ("Couldn't get source caps for decoder '%s'", in_plugin->name);
184 srccaps = gst_caps_from_string ("video/x-raw");
188 sinktempl = gst_pad_template_new ("sink", GST_PAD_SINK,
189 GST_PAD_ALWAYS, sinkcaps);
190 srctempl = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, srccaps);
192 gst_element_class_add_pad_template (element_class, srctempl);
193 gst_element_class_add_pad_template (element_class, sinktempl);
195 klass->in_plugin = in_plugin;
199 gst_ffmpegviddec_class_init (GstFFMpegVidDecClass * klass)
201 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
202 GstVideoDecoderClass *viddec_class = GST_VIDEO_DECODER_CLASS (klass);
205 parent_class = g_type_class_peek_parent (klass);
207 gobject_class->finalize = gst_ffmpegviddec_finalize;
209 gobject_class->set_property = gst_ffmpegviddec_set_property;
210 gobject_class->get_property = gst_ffmpegviddec_get_property;
212 g_object_class_install_property (gobject_class, PROP_SKIPFRAME,
213 g_param_spec_enum ("skip-frame", "Skip frames",
214 "Which types of frames to skip during decoding",
215 GST_FFMPEGVIDDEC_TYPE_SKIPFRAME, 0,
216 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
217 g_object_class_install_property (gobject_class, PROP_LOWRES,
218 g_param_spec_enum ("lowres", "Low resolution",
219 "At which resolution to decode images",
220 GST_FFMPEGVIDDEC_TYPE_LOWRES, 0,
221 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
222 g_object_class_install_property (gobject_class, PROP_DIRECT_RENDERING,
223 g_param_spec_boolean ("direct-rendering", "Direct Rendering",
224 "Enable direct rendering", DEFAULT_DIRECT_RENDERING,
225 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
226 g_object_class_install_property (gobject_class, PROP_DEBUG_MV,
227 g_param_spec_boolean ("debug-mv", "Debug motion vectors",
228 "Whether libav should print motion vectors on top of the image",
229 DEFAULT_DEBUG_MV, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
230 g_object_class_install_property (gobject_class, PROP_OUTPUT_CORRUPT,
231 g_param_spec_boolean ("output-corrupt", "Output corrupt buffers",
232 "Whether libav should output frames even if corrupted",
233 DEFAULT_OUTPUT_CORRUPT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
235 caps = klass->in_plugin->capabilities;
236 if (caps & (CODEC_CAP_FRAME_THREADS | CODEC_CAP_SLICE_THREADS)) {
237 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MAX_THREADS,
238 g_param_spec_int ("max-threads", "Maximum decode threads",
239 "Maximum number of worker threads to spawn. (0 = auto)",
240 0, G_MAXINT, DEFAULT_MAX_THREADS,
241 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
244 viddec_class->set_format = gst_ffmpegviddec_set_format;
245 viddec_class->handle_frame = gst_ffmpegviddec_handle_frame;
246 viddec_class->start = gst_ffmpegviddec_start;
247 viddec_class->stop = gst_ffmpegviddec_stop;
248 viddec_class->flush = gst_ffmpegviddec_flush;
249 viddec_class->finish = gst_ffmpegviddec_finish;
250 viddec_class->drain = gst_ffmpegviddec_finish; /* drain and finish are the same to us */
251 viddec_class->decide_allocation = gst_ffmpegviddec_decide_allocation;
252 viddec_class->propose_allocation = gst_ffmpegviddec_propose_allocation;
256 gst_ffmpegviddec_init (GstFFMpegVidDec * ffmpegdec)
258 GstFFMpegVidDecClass *klass =
259 (GstFFMpegVidDecClass *) G_OBJECT_GET_CLASS (ffmpegdec);
261 /* some ffmpeg data */
262 ffmpegdec->context = avcodec_alloc_context3 (klass->in_plugin);
263 ffmpegdec->context->opaque = ffmpegdec;
264 ffmpegdec->picture = av_frame_alloc ();
265 ffmpegdec->opened = FALSE;
266 ffmpegdec->skip_frame = ffmpegdec->lowres = 0;
267 ffmpegdec->direct_rendering = DEFAULT_DIRECT_RENDERING;
268 ffmpegdec->debug_mv = DEFAULT_DEBUG_MV;
269 ffmpegdec->max_threads = DEFAULT_MAX_THREADS;
270 ffmpegdec->output_corrupt = DEFAULT_OUTPUT_CORRUPT;
272 gst_video_decoder_set_needs_format (GST_VIDEO_DECODER (ffmpegdec), TRUE);
276 gst_ffmpegviddec_finalize (GObject * object)
278 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) object;
280 av_frame_free (&ffmpegdec->picture);
282 if (ffmpegdec->context != NULL) {
283 gst_ffmpeg_avcodec_close (ffmpegdec->context);
284 av_free (ffmpegdec->context);
285 ffmpegdec->context = NULL;
288 G_OBJECT_CLASS (parent_class)->finalize (object);
292 gst_ffmpegviddec_context_set_flags (AVCodecContext * context, guint flags,
295 g_return_if_fail (context != NULL);
298 context->flags |= flags;
300 context->flags &= ~flags;
305 gst_ffmpegviddec_close (GstFFMpegVidDec * ffmpegdec, gboolean reset)
307 GstFFMpegVidDecClass *oclass;
310 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
312 GST_LOG_OBJECT (ffmpegdec, "closing ffmpeg codec");
314 gst_caps_replace (&ffmpegdec->last_caps, NULL);
316 gst_ffmpeg_avcodec_close (ffmpegdec->context);
317 ffmpegdec->opened = FALSE;
319 for (i = 0; i < G_N_ELEMENTS (ffmpegdec->stride); i++)
320 ffmpegdec->stride[i] = -1;
322 gst_buffer_replace (&ffmpegdec->palette, NULL);
324 if (ffmpegdec->context->extradata) {
325 av_free (ffmpegdec->context->extradata);
326 ffmpegdec->context->extradata = NULL;
328 if (ffmpegdec->context->slice_offset) {
329 g_free (ffmpegdec->context->slice_offset);
330 ffmpegdec->context->slice_offset = NULL;
333 if (avcodec_get_context_defaults3 (ffmpegdec->context,
334 oclass->in_plugin) < 0) {
335 GST_DEBUG_OBJECT (ffmpegdec, "Failed to set context defaults");
338 ffmpegdec->context->opaque = ffmpegdec;
345 gst_ffmpegviddec_open (GstFFMpegVidDec * ffmpegdec)
347 GstFFMpegVidDecClass *oclass;
350 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
352 if (gst_ffmpeg_avcodec_open (ffmpegdec->context, oclass->in_plugin) < 0)
355 for (i = 0; i < G_N_ELEMENTS (ffmpegdec->stride); i++)
356 ffmpegdec->stride[i] = -1;
358 ffmpegdec->opened = TRUE;
359 ffmpegdec->is_realvideo = FALSE;
361 GST_LOG_OBJECT (ffmpegdec, "Opened libav codec %s, id %d",
362 oclass->in_plugin->name, oclass->in_plugin->id);
364 switch (oclass->in_plugin->id) {
365 case AV_CODEC_ID_RV10:
366 case AV_CODEC_ID_RV30:
367 case AV_CODEC_ID_RV20:
368 case AV_CODEC_ID_RV40:
369 ffmpegdec->is_realvideo = TRUE;
372 GST_LOG_OBJECT (ffmpegdec, "Parser deactivated for format");
376 gst_ffmpegviddec_context_set_flags (ffmpegdec->context,
377 CODEC_FLAG_OUTPUT_CORRUPT, ffmpegdec->output_corrupt);
384 gst_ffmpegviddec_close (ffmpegdec, TRUE);
385 GST_DEBUG_OBJECT (ffmpegdec, "avdec_%s: Failed to open libav codec",
386 oclass->in_plugin->name);
392 gst_ffmpegviddec_get_palette (GstFFMpegVidDec * ffmpegdec,
393 GstVideoCodecState * state)
395 GstStructure *str = gst_caps_get_structure (state->caps, 0);
396 const GValue *palette_v;
399 /* do we have a palette? */
400 if ((palette_v = gst_structure_get_value (str, "palette_data"))) {
401 palette = gst_value_get_buffer (palette_v);
402 GST_DEBUG ("got palette data %p", palette);
403 if (gst_buffer_get_size (palette) >= AVPALETTE_SIZE) {
404 gst_buffer_replace (&ffmpegdec->palette, palette);
411 gst_ffmpegviddec_set_format (GstVideoDecoder * decoder,
412 GstVideoCodecState * state)
414 GstFFMpegVidDec *ffmpegdec;
415 GstFFMpegVidDecClass *oclass;
416 GstClockTime latency = GST_CLOCK_TIME_NONE;
417 gboolean ret = FALSE;
419 ffmpegdec = (GstFFMpegVidDec *) decoder;
420 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
422 if (ffmpegdec->last_caps != NULL &&
423 gst_caps_is_equal (ffmpegdec->last_caps, state->caps)) {
427 GST_DEBUG_OBJECT (ffmpegdec, "setcaps called");
429 GST_OBJECT_LOCK (ffmpegdec);
430 /* stupid check for VC1 */
431 if ((oclass->in_plugin->id == AV_CODEC_ID_WMV3) ||
432 (oclass->in_plugin->id == AV_CODEC_ID_VC1))
433 oclass->in_plugin->id = gst_ffmpeg_caps_to_codecid (state->caps, NULL);
435 /* close old session */
436 if (ffmpegdec->opened) {
437 GST_OBJECT_UNLOCK (ffmpegdec);
438 gst_ffmpegviddec_drain (ffmpegdec);
439 GST_OBJECT_LOCK (ffmpegdec);
440 if (!gst_ffmpegviddec_close (ffmpegdec, TRUE)) {
441 GST_OBJECT_UNLOCK (ffmpegdec);
444 ffmpegdec->pic_pix_fmt = 0;
445 ffmpegdec->pic_width = 0;
446 ffmpegdec->pic_height = 0;
447 ffmpegdec->pic_par_n = 0;
448 ffmpegdec->pic_par_d = 0;
449 ffmpegdec->ctx_ticks = 0;
450 ffmpegdec->ctx_time_n = 0;
451 ffmpegdec->ctx_time_d = 0;
454 gst_caps_replace (&ffmpegdec->last_caps, state->caps);
456 /* set buffer functions */
457 ffmpegdec->context->get_buffer2 = gst_ffmpegviddec_get_buffer2;
458 ffmpegdec->context->get_buffer = NULL;
459 ffmpegdec->context->reget_buffer = NULL;
460 ffmpegdec->context->release_buffer = NULL;
461 ffmpegdec->context->draw_horiz_band = NULL;
463 /* reset coded_width/_height to prevent it being reused from last time when
464 * the codec is opened again, causing a mismatch and possible
465 * segfault/corruption. (Common scenario when renegotiating caps) */
466 ffmpegdec->context->coded_width = 0;
467 ffmpegdec->context->coded_height = 0;
469 GST_LOG_OBJECT (ffmpegdec, "size %dx%d", ffmpegdec->context->width,
470 ffmpegdec->context->height);
472 /* FIXME : Create a method that takes GstVideoCodecState instead */
473 /* get size and so */
474 gst_ffmpeg_caps_with_codecid (oclass->in_plugin->id,
475 oclass->in_plugin->type, state->caps, ffmpegdec->context);
477 GST_LOG_OBJECT (ffmpegdec, "size after %dx%d", ffmpegdec->context->width,
478 ffmpegdec->context->height);
480 gst_ffmpegviddec_get_palette (ffmpegdec, state);
482 if (!ffmpegdec->context->time_base.den || !ffmpegdec->context->time_base.num) {
483 GST_DEBUG_OBJECT (ffmpegdec, "forcing 25/1 framerate");
484 ffmpegdec->context->time_base.num = 1;
485 ffmpegdec->context->time_base.den = 25;
488 /* workaround encoder bugs */
489 ffmpegdec->context->workaround_bugs |= FF_BUG_AUTODETECT;
490 ffmpegdec->context->err_recognition = 1;
493 ffmpegdec->context->lowres = ffmpegdec->lowres;
494 ffmpegdec->context->skip_frame = ffmpegdec->skip_frame;
496 /* ffmpeg can draw motion vectors on top of the image (not every decoder
498 ffmpegdec->context->debug_mv = ffmpegdec->debug_mv;
504 if (ffmpegdec->max_threads == 0) {
505 if (!(oclass->in_plugin->capabilities & CODEC_CAP_AUTO_THREADS))
506 ffmpegdec->context->thread_count = gst_ffmpeg_auto_max_threads ();
508 ffmpegdec->context->thread_count = 0;
510 ffmpegdec->context->thread_count = ffmpegdec->max_threads;
512 query = gst_query_new_latency ();
514 /* Check if upstream is live. If it isn't we can enable frame based
515 * threading, which is adding latency */
516 if (gst_pad_peer_query (GST_VIDEO_DECODER_SINK_PAD (ffmpegdec), query)) {
517 gst_query_parse_latency (query, &is_live, NULL, NULL);
519 gst_query_unref (query);
522 ffmpegdec->context->thread_type = FF_THREAD_SLICE;
524 ffmpegdec->context->thread_type = FF_THREAD_SLICE | FF_THREAD_FRAME;
527 /* open codec - we don't select an output pix_fmt yet,
528 * simply because we don't know! We only get it
529 * during playback... */
530 if (!gst_ffmpegviddec_open (ffmpegdec))
533 if (ffmpegdec->input_state)
534 gst_video_codec_state_unref (ffmpegdec->input_state);
535 ffmpegdec->input_state = gst_video_codec_state_ref (state);
537 if (ffmpegdec->input_state->info.fps_n) {
538 GstVideoInfo *info = &ffmpegdec->input_state->info;
539 latency = gst_util_uint64_scale_ceil (
540 (ffmpegdec->context->has_b_frames) * GST_SECOND, info->fps_d,
547 GST_OBJECT_UNLOCK (ffmpegdec);
549 if (GST_CLOCK_TIME_IS_VALID (latency))
550 gst_video_decoder_set_latency (decoder, latency, latency);
557 GST_DEBUG_OBJECT (ffmpegdec, "Failed to open");
564 GstFFMpegVidDec *ffmpegdec;
565 GstVideoCodecFrame *frame;
567 GstVideoFrame vframe;
569 AVBufferRef *avbuffer;
570 } GstFFMpegVidDecVideoFrame;
572 static GstFFMpegVidDecVideoFrame *
573 gst_ffmpegviddec_video_frame_new (GstFFMpegVidDec * ffmpegdec,
574 GstVideoCodecFrame * frame)
576 GstFFMpegVidDecVideoFrame *dframe;
578 dframe = g_slice_new0 (GstFFMpegVidDecVideoFrame);
579 dframe->ffmpegdec = ffmpegdec;
580 dframe->frame = frame;
582 GST_DEBUG_OBJECT (ffmpegdec, "new video frame %p", dframe);
588 gst_ffmpegviddec_video_frame_free (GstFFMpegVidDec * ffmpegdec,
589 GstFFMpegVidDecVideoFrame * frame)
591 GST_DEBUG_OBJECT (ffmpegdec, "free video frame %p", frame);
594 gst_video_frame_unmap (&frame->vframe);
595 gst_video_decoder_release_frame (GST_VIDEO_DECODER (ffmpegdec), frame->frame);
596 gst_buffer_replace (&frame->buffer, NULL);
597 if (frame->avbuffer) {
598 av_buffer_unref (&frame->avbuffer);
600 g_slice_free (GstFFMpegVidDecVideoFrame, frame);
604 dummy_free_buffer (void *opaque, uint8_t * data)
606 GstFFMpegVidDecVideoFrame *frame = opaque;
608 gst_ffmpegviddec_video_frame_free (frame->ffmpegdec, frame);
611 /* called when ffmpeg wants us to allocate a buffer to write the decoded frame
612 * into. We try to give it memory from our pool */
614 gst_ffmpegviddec_get_buffer2 (AVCodecContext * context, AVFrame * picture,
617 GstVideoCodecFrame *frame;
618 GstFFMpegVidDecVideoFrame *dframe;
619 GstFFMpegVidDec *ffmpegdec;
624 ffmpegdec = (GstFFMpegVidDec *) context->opaque;
626 GST_DEBUG_OBJECT (ffmpegdec, "getting buffer picture %p", picture);
628 /* apply the last info we have seen to this picture, when we get the
629 * picture back from ffmpeg we can use this to correctly timestamp the output
631 GST_DEBUG_OBJECT (ffmpegdec, "opaque value SN %d",
632 (gint32) picture->reordered_opaque);
635 gst_video_decoder_get_frame (GST_VIDEO_DECODER (ffmpegdec),
636 picture->reordered_opaque);
637 if (G_UNLIKELY (frame == NULL))
640 /* now it has a buffer allocated, so it is real and will also
642 GST_VIDEO_CODEC_FRAME_FLAG_UNSET (frame,
643 GST_VIDEO_CODEC_FRAME_FLAG_DECODE_ONLY);
645 if (G_UNLIKELY (frame->output_buffer != NULL))
646 goto duplicate_frame;
648 /* GstFFMpegVidDecVideoFrame receives the frame ref */
649 if (picture->opaque) {
650 dframe = picture->opaque;
651 dframe->frame = frame;
653 picture->opaque = dframe =
654 gst_ffmpegviddec_video_frame_new (ffmpegdec, frame);
657 GST_DEBUG_OBJECT (ffmpegdec, "storing opaque %p", dframe);
659 /* If the picture format changed but we already negotiated before,
660 * we will have to do fallback allocation until output and input
661 * formats are in sync again. We will renegotiate on the output
663 if (ffmpegdec->pic_width != 0 && picture_changed (ffmpegdec, picture))
666 /* see if we need renegotiation */
667 if (G_UNLIKELY (!gst_ffmpegviddec_negotiate (ffmpegdec, context, picture,
669 goto negotiate_failed;
671 if (!ffmpegdec->current_dr)
675 gst_video_decoder_allocate_output_frame (GST_VIDEO_DECODER (ffmpegdec),
677 if (ret != GST_FLOW_OK)
680 /* piggy-backed alloc'ed on the frame,
681 * and there was much rejoicing and we are grateful.
682 * Now take away buffer from frame, we will give it back later when decoded.
683 * This allows multiple request for a buffer per frame; unusual but possible. */
684 gst_buffer_replace (&dframe->buffer, frame->output_buffer);
685 gst_buffer_replace (&frame->output_buffer, NULL);
688 info = &ffmpegdec->output_state->info;
689 if (!gst_video_frame_map (&dframe->vframe, info, dframe->buffer,
692 dframe->mapped = TRUE;
694 for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
695 if (c < GST_VIDEO_INFO_N_PLANES (info)) {
696 picture->data[c] = GST_VIDEO_FRAME_PLANE_DATA (&dframe->vframe, c);
697 picture->linesize[c] = GST_VIDEO_FRAME_PLANE_STRIDE (&dframe->vframe, c);
699 /* libav does not allow stride changes currently, fall back to
700 * non-direct rendering here:
701 * https://bugzilla.gnome.org/show_bug.cgi?id=704769
702 * https://bugzilla.libav.org/show_bug.cgi?id=556
704 if (ffmpegdec->stride[c] == -1) {
705 ffmpegdec->stride[c] = picture->linesize[c];
706 } else if (picture->linesize[c] != ffmpegdec->stride[c]) {
707 GST_LOG_OBJECT (ffmpegdec,
708 "No direct rendering, stride changed c=%d %d->%d", c,
709 ffmpegdec->stride[c], picture->linesize[c]);
711 for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
712 picture->data[c] = NULL;
713 picture->linesize[c] = 0;
714 av_buffer_unref (&picture->buf[c]);
716 gst_video_frame_unmap (&dframe->vframe);
717 dframe->mapped = FALSE;
718 gst_buffer_replace (&dframe->buffer, NULL);
719 ffmpegdec->current_dr = FALSE;
724 picture->data[c] = NULL;
725 picture->linesize[c] = 0;
727 GST_LOG_OBJECT (ffmpegdec, "linesize %d, data %p", picture->linesize[c],
731 picture->buf[0] = av_buffer_create (NULL, 0, dummy_free_buffer, dframe, 0);
733 /* tell ffmpeg we own this buffer, tranfer the ref we have on the buffer to
734 * the opaque data. */
735 picture->type = FF_BUFFER_TYPE_USER;
737 GST_LOG_OBJECT (ffmpegdec, "returned frame %p", dframe->buffer);
744 GST_DEBUG_OBJECT (ffmpegdec, "negotiate failed");
749 GST_LOG_OBJECT (ffmpegdec, "direct rendering disabled, fallback alloc");
754 /* alloc default buffer when we can't get one from downstream */
755 GST_LOG_OBJECT (ffmpegdec, "alloc failed, fallback alloc");
760 /* alloc default buffer when we can't get one from downstream */
761 GST_LOG_OBJECT (ffmpegdec, "failed to map frame, fallback alloc");
762 gst_buffer_replace (&dframe->buffer, NULL);
768 int ret = avcodec_default_get_buffer2 (context, picture, flags);
770 for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
771 ffmpegdec->stride[c] = picture->linesize[c];
773 /* Wrap our buffer around the default one to be able to have a callback
774 * when our data can be freed. Just putting our data into the first free
775 * buffer might not work if there are too many allocated already
777 if (picture->buf[0]) {
778 dframe->avbuffer = picture->buf[0];
780 av_buffer_create (picture->buf[0]->data, picture->buf[0]->size,
781 dummy_free_buffer, dframe, 0);
784 av_buffer_create (NULL, 0, dummy_free_buffer, dframe, 0);
791 GST_WARNING_OBJECT (ffmpegdec, "already alloc'ed output buffer for frame");
792 gst_video_codec_frame_unref (frame);
797 GST_WARNING_OBJECT (ffmpegdec, "Couldn't get codec frame !");
803 picture_changed (GstFFMpegVidDec * ffmpegdec, AVFrame * picture)
805 return !(ffmpegdec->pic_width == picture->width
806 && ffmpegdec->pic_height == picture->height
807 && ffmpegdec->pic_pix_fmt == picture->format
808 && ffmpegdec->pic_par_n == picture->sample_aspect_ratio.num
809 && ffmpegdec->pic_par_d == picture->sample_aspect_ratio.den
810 && ffmpegdec->pic_interlaced == picture->interlaced_frame);
814 context_changed (GstFFMpegVidDec * ffmpegdec, AVCodecContext * context)
816 return !(ffmpegdec->ctx_ticks == context->ticks_per_frame
817 && ffmpegdec->ctx_time_n == context->time_base.num
818 && ffmpegdec->ctx_time_d == context->time_base.den);
822 update_video_context (GstFFMpegVidDec * ffmpegdec, AVCodecContext * context,
823 AVFrame * picture, gboolean force)
825 if (!force && !picture_changed (ffmpegdec, picture)
826 && !context_changed (ffmpegdec, context))
829 GST_DEBUG_OBJECT (ffmpegdec,
830 "Renegotiating video from %dx%d@ %d:%d PAR %d/%d fps pixfmt %d to %dx%d@ %d:%d PAR %d/%d fps pixfmt %d",
831 ffmpegdec->pic_width, ffmpegdec->pic_height,
832 ffmpegdec->pic_par_n, ffmpegdec->pic_par_d,
833 ffmpegdec->ctx_time_n, ffmpegdec->ctx_time_d,
834 ffmpegdec->pic_pix_fmt,
835 picture->width, picture->height,
836 picture->sample_aspect_ratio.num,
837 picture->sample_aspect_ratio.den,
838 context->time_base.num, context->time_base.den, picture->format);
840 ffmpegdec->pic_pix_fmt = picture->format;
841 ffmpegdec->pic_width = picture->width;
842 ffmpegdec->pic_height = picture->height;
843 ffmpegdec->pic_par_n = picture->sample_aspect_ratio.num;
844 ffmpegdec->pic_par_d = picture->sample_aspect_ratio.den;
845 ffmpegdec->pic_interlaced = picture->interlaced_frame;
846 ffmpegdec->ctx_ticks = context->ticks_per_frame;
847 ffmpegdec->ctx_time_n = context->time_base.num;
848 ffmpegdec->ctx_time_d = context->time_base.den;
854 gst_ffmpegviddec_update_par (GstFFMpegVidDec * ffmpegdec,
855 GstVideoInfo * in_info, GstVideoInfo * out_info)
857 gboolean demuxer_par_set = FALSE;
858 gboolean decoder_par_set = FALSE;
859 gint demuxer_num = 1, demuxer_denom = 1;
860 gint decoder_num = 1, decoder_denom = 1;
862 if (in_info->par_n && in_info->par_d) {
863 demuxer_num = in_info->par_n;
864 demuxer_denom = in_info->par_d;
865 demuxer_par_set = TRUE;
866 GST_DEBUG_OBJECT (ffmpegdec, "Demuxer PAR: %d:%d", demuxer_num,
870 if (ffmpegdec->pic_par_n && ffmpegdec->pic_par_d) {
871 decoder_num = ffmpegdec->pic_par_n;
872 decoder_denom = ffmpegdec->pic_par_d;
873 decoder_par_set = TRUE;
874 GST_DEBUG_OBJECT (ffmpegdec, "Decoder PAR: %d:%d", decoder_num,
878 if (!demuxer_par_set && !decoder_par_set)
881 if (demuxer_par_set && !decoder_par_set)
882 goto use_demuxer_par;
884 if (decoder_par_set && !demuxer_par_set)
885 goto use_decoder_par;
887 /* Both the demuxer and the decoder provide a PAR. If one of
888 * the two PARs is 1:1 and the other one is not, use the one
889 * that is not 1:1. */
890 if (demuxer_num == demuxer_denom && decoder_num != decoder_denom)
891 goto use_decoder_par;
893 if (decoder_num == decoder_denom && demuxer_num != demuxer_denom)
894 goto use_demuxer_par;
896 /* Both PARs are non-1:1, so use the PAR provided by the demuxer */
897 goto use_demuxer_par;
901 GST_DEBUG_OBJECT (ffmpegdec,
902 "Setting decoder provided pixel-aspect-ratio of %u:%u", decoder_num,
904 out_info->par_n = decoder_num;
905 out_info->par_d = decoder_denom;
910 GST_DEBUG_OBJECT (ffmpegdec,
911 "Setting demuxer provided pixel-aspect-ratio of %u:%u", demuxer_num,
913 out_info->par_n = demuxer_num;
914 out_info->par_d = demuxer_denom;
919 GST_DEBUG_OBJECT (ffmpegdec,
920 "Neither demuxer nor codec provide a pixel-aspect-ratio");
928 gst_ffmpegviddec_negotiate (GstFFMpegVidDec * ffmpegdec,
929 AVCodecContext * context, AVFrame * picture, gboolean force)
932 GstVideoInfo *in_info, *out_info;
933 GstVideoCodecState *output_state;
936 if (!update_video_context (ffmpegdec, context, picture, force))
939 fmt = gst_ffmpeg_pixfmt_to_videoformat (ffmpegdec->pic_pix_fmt);
940 if (G_UNLIKELY (fmt == GST_VIDEO_FORMAT_UNKNOWN))
944 gst_video_decoder_set_output_state (GST_VIDEO_DECODER (ffmpegdec), fmt,
945 ffmpegdec->pic_width, ffmpegdec->pic_height, ffmpegdec->input_state);
946 if (ffmpegdec->output_state)
947 gst_video_codec_state_unref (ffmpegdec->output_state);
948 ffmpegdec->output_state = output_state;
950 in_info = &ffmpegdec->input_state->info;
951 out_info = &ffmpegdec->output_state->info;
953 /* set the interlaced flag */
954 if (ffmpegdec->pic_interlaced)
955 out_info->interlace_mode = GST_VIDEO_INTERLACE_MODE_MIXED;
957 out_info->interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
959 switch (context->chroma_sample_location) {
961 out_info->chroma_site = GST_VIDEO_CHROMA_SITE_MPEG2;
964 out_info->chroma_site = GST_VIDEO_CHROMA_SITE_JPEG;
967 out_info->chroma_site = GST_VIDEO_CHROMA_SITE_DV;
970 out_info->chroma_site = GST_VIDEO_CHROMA_SITE_V_COSITED;
976 /* try to find a good framerate */
977 if ((in_info->fps_d && in_info->fps_n) ||
978 GST_VIDEO_INFO_FLAG_IS_SET (in_info, GST_VIDEO_FLAG_VARIABLE_FPS)) {
979 /* take framerate from input when it was specified (#313970) */
980 fps_n = in_info->fps_n;
981 fps_d = in_info->fps_d;
983 fps_n = ffmpegdec->ctx_time_d / ffmpegdec->ctx_ticks;
984 fps_d = ffmpegdec->ctx_time_n;
987 GST_LOG_OBJECT (ffmpegdec, "invalid framerate: %d/0, -> %d/1", fps_n,
991 if (gst_util_fraction_compare (fps_n, fps_d, 1000, 1) > 0) {
992 GST_LOG_OBJECT (ffmpegdec, "excessive framerate: %d/%d, -> 0/1", fps_n,
999 GST_LOG_OBJECT (ffmpegdec, "setting framerate: %d/%d", fps_n, fps_d);
1000 out_info->fps_n = fps_n;
1001 out_info->fps_d = fps_d;
1003 /* calculate and update par now */
1004 gst_ffmpegviddec_update_par (ffmpegdec, in_info, out_info);
1006 /* Copy stereo/multiview info from upstream if set */
1007 if (GST_VIDEO_INFO_MULTIVIEW_MODE (in_info) != GST_VIDEO_MULTIVIEW_MODE_NONE) {
1008 GST_VIDEO_INFO_MULTIVIEW_MODE (out_info) =
1009 GST_VIDEO_INFO_MULTIVIEW_MODE (in_info);
1010 GST_VIDEO_INFO_MULTIVIEW_FLAGS (out_info) =
1011 GST_VIDEO_INFO_MULTIVIEW_FLAGS (in_info);
1014 if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (ffmpegdec)))
1015 goto negotiate_failed;
1022 GST_ERROR_OBJECT (ffmpegdec,
1023 "decoder requires a video format unsupported by GStreamer");
1028 /* Reset so we try again next time even if force==FALSE */
1029 ffmpegdec->pic_pix_fmt = 0;
1030 ffmpegdec->pic_width = 0;
1031 ffmpegdec->pic_height = 0;
1032 ffmpegdec->pic_par_n = 0;
1033 ffmpegdec->pic_par_d = 0;
1034 ffmpegdec->ctx_ticks = 0;
1035 ffmpegdec->ctx_time_n = 0;
1036 ffmpegdec->ctx_time_d = 0;
1038 GST_ERROR_OBJECT (ffmpegdec, "negotiation failed");
1043 /* perform qos calculations before decoding the next frame.
1045 * Sets the skip_frame flag and if things are really bad, skips to the next
1050 gst_ffmpegviddec_do_qos (GstFFMpegVidDec * ffmpegdec,
1051 GstVideoCodecFrame * frame, gboolean * mode_switch)
1053 GstClockTimeDiff diff;
1054 GstSegmentFlags skip_flags =
1055 GST_VIDEO_DECODER_INPUT_SEGMENT (ffmpegdec).flags;
1057 *mode_switch = FALSE;
1062 if (skip_flags & GST_SEGMENT_FLAG_TRICKMODE_KEY_UNITS) {
1063 ffmpegdec->context->skip_frame = AVDISCARD_NONKEY;
1064 *mode_switch = TRUE;
1065 } else if (skip_flags & GST_SEGMENT_FLAG_TRICKMODE) {
1066 ffmpegdec->context->skip_frame = AVDISCARD_NONREF;
1067 *mode_switch = TRUE;
1071 gst_video_decoder_get_max_decode_time (GST_VIDEO_DECODER (ffmpegdec),
1074 /* if we don't have timing info, then we don't do QoS */
1075 if (G_UNLIKELY (diff == G_MAXINT64))
1078 GST_DEBUG_OBJECT (ffmpegdec, "decoding time %" G_GINT64_FORMAT, diff);
1080 if (*mode_switch == FALSE) {
1081 if (diff > 0 && ffmpegdec->context->skip_frame != AVDISCARD_DEFAULT) {
1082 ffmpegdec->context->skip_frame = AVDISCARD_DEFAULT;
1083 *mode_switch = TRUE;
1084 GST_DEBUG_OBJECT (ffmpegdec, "QOS: normal mode");
1087 else if (diff <= 0 && ffmpegdec->context->skip_frame != AVDISCARD_NONREF) {
1088 ffmpegdec->context->skip_frame = AVDISCARD_NONREF;
1089 *mode_switch = TRUE;
1090 GST_DEBUG_OBJECT (ffmpegdec,
1091 "QOS: hurry up, diff %" G_GINT64_FORMAT " >= 0", diff);
1096 /* get an outbuf buffer with the current picture */
1097 static GstFlowReturn
1098 get_output_buffer (GstFFMpegVidDec * ffmpegdec, GstVideoCodecFrame * frame)
1100 GstFlowReturn ret = GST_FLOW_OK;
1101 AVPicture pic, *outpic;
1102 GstVideoFrame vframe;
1106 GST_LOG_OBJECT (ffmpegdec, "get output buffer");
1108 if (!ffmpegdec->output_state)
1109 goto not_negotiated;
1112 gst_video_decoder_allocate_output_frame (GST_VIDEO_DECODER (ffmpegdec),
1114 if (G_UNLIKELY (ret != GST_FLOW_OK))
1117 /* original ffmpeg code does not handle odd sizes correctly.
1118 * This patched up version does */
1119 /* Fill avpicture */
1120 info = &ffmpegdec->output_state->info;
1121 if (!gst_video_frame_map (&vframe, info, frame->output_buffer,
1122 GST_MAP_READ | GST_MAP_WRITE))
1125 for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
1126 if (c < GST_VIDEO_INFO_N_PLANES (info)) {
1127 pic.data[c] = GST_VIDEO_FRAME_PLANE_DATA (&vframe, c);
1128 pic.linesize[c] = GST_VIDEO_FRAME_PLANE_STRIDE (&vframe, c);
1131 pic.linesize[c] = 0;
1133 GST_LOG_OBJECT (ffmpegdec, "linesize %d, data %p", pic.linesize[c],
1137 outpic = (AVPicture *) ffmpegdec->picture;
1139 av_picture_copy (&pic, outpic, ffmpegdec->context->pix_fmt,
1140 GST_VIDEO_INFO_WIDTH (info), GST_VIDEO_INFO_HEIGHT (info));
1142 gst_video_frame_unmap (&vframe);
1144 ffmpegdec->picture->reordered_opaque = -1;
1151 GST_DEBUG_OBJECT (ffmpegdec, "allocation failed");
1156 GST_DEBUG_OBJECT (ffmpegdec, "not negotiated");
1157 return GST_FLOW_NOT_NEGOTIATED;
1162 gst_avpacket_init (AVPacket * packet, guint8 * data, guint size)
1164 memset (packet, 0, sizeof (AVPacket));
1165 packet->data = data;
1166 packet->size = size;
1169 /* gst_ffmpegviddec_[video|audio]_frame:
1171 * data: pointer to the data to decode
1172 * size: size of data in bytes
1173 * in_timestamp: incoming timestamp.
1174 * in_duration: incoming duration.
1175 * in_offset: incoming offset (frame number).
1178 * Returns: number of bytes used in decoding. The check for successful decode is
1179 * outbuf being non-NULL.
1182 gst_ffmpegviddec_video_frame (GstFFMpegVidDec * ffmpegdec,
1183 guint8 * data, guint size, gint * have_data, GstVideoCodecFrame * frame,
1184 GstFlowReturn * ret)
1187 gboolean mode_switch;
1188 GstVideoCodecFrame *out_frame;
1189 GstFFMpegVidDecVideoFrame *out_dframe;
1194 /* in case we skip frames */
1195 ffmpegdec->picture->pict_type = -1;
1197 /* run QoS code, we don't stop decoding the frame when we are late because
1198 * else we might skip a reference frame */
1199 gst_ffmpegviddec_do_qos (ffmpegdec, frame, &mode_switch);
1201 if (ffmpegdec->is_realvideo && data != NULL) {
1205 /* setup the slice table for realvideo */
1206 if (ffmpegdec->context->slice_offset == NULL)
1207 ffmpegdec->context->slice_offset = g_malloc (sizeof (guint32) * 1000);
1209 slice_count = (*data++) + 1;
1210 ffmpegdec->context->slice_count = slice_count;
1212 for (i = 0; i < slice_count; i++) {
1214 ffmpegdec->context->slice_offset[i] = GST_READ_UINT32_LE (data);
1220 /* save reference to the timing info */
1221 ffmpegdec->context->reordered_opaque = (gint64) frame->system_frame_number;
1222 ffmpegdec->picture->reordered_opaque = (gint64) frame->system_frame_number;
1224 GST_DEBUG_OBJECT (ffmpegdec, "stored opaque values idx %d",
1225 frame->system_frame_number);
1228 /* now decode the frame */
1229 gst_avpacket_init (&packet, data, size);
1231 if (ffmpegdec->palette) {
1234 pal = av_packet_new_side_data (&packet, AV_PKT_DATA_PALETTE,
1236 gst_buffer_extract (ffmpegdec->palette, 0, pal, AVPALETTE_SIZE);
1237 GST_DEBUG_OBJECT (ffmpegdec, "copy pal %p %p", &packet, pal);
1240 /* This might call into get_buffer() from another thread,
1241 * which would cause a deadlock. Release the lock here
1242 * and taking it again later seems safe
1243 * See https://bugzilla.gnome.org/show_bug.cgi?id=726020
1245 GST_VIDEO_DECODER_STREAM_UNLOCK (ffmpegdec);
1246 len = avcodec_decode_video2 (ffmpegdec->context,
1247 ffmpegdec->picture, have_data, &packet);
1248 GST_VIDEO_DECODER_STREAM_LOCK (ffmpegdec);
1250 GST_DEBUG_OBJECT (ffmpegdec, "after decode: len %d, have_data %d",
1253 /* when we are in skip_frame mode, don't complain when ffmpeg returned
1254 * no data because we told it to skip stuff. */
1255 if (len < 0 && (mode_switch || ffmpegdec->context->skip_frame))
1258 /* no data, we're done */
1259 if (len < 0 || *have_data == 0)
1262 /* get the output picture timing info again */
1263 out_dframe = ffmpegdec->picture->opaque;
1264 out_frame = gst_video_codec_frame_ref (out_dframe->frame);
1266 /* also give back a buffer allocated by the frame, if any */
1267 gst_buffer_replace (&out_frame->output_buffer, out_dframe->buffer);
1268 gst_buffer_replace (&out_dframe->buffer, NULL);
1270 GST_DEBUG_OBJECT (ffmpegdec,
1271 "pts %" G_GUINT64_FORMAT " duration %" G_GUINT64_FORMAT,
1272 out_frame->pts, out_frame->duration);
1273 GST_DEBUG_OBJECT (ffmpegdec, "picture: pts %" G_GUINT64_FORMAT,
1274 (guint64) ffmpegdec->picture->pts);
1275 GST_DEBUG_OBJECT (ffmpegdec, "picture: num %d",
1276 ffmpegdec->picture->coded_picture_number);
1277 GST_DEBUG_OBJECT (ffmpegdec, "picture: ref %d",
1278 ffmpegdec->picture->reference);
1279 GST_DEBUG_OBJECT (ffmpegdec, "picture: display %d",
1280 ffmpegdec->picture->display_picture_number);
1281 GST_DEBUG_OBJECT (ffmpegdec, "picture: opaque %p",
1282 ffmpegdec->picture->opaque);
1283 GST_DEBUG_OBJECT (ffmpegdec, "picture: reordered opaque %" G_GUINT64_FORMAT,
1284 (guint64) ffmpegdec->picture->reordered_opaque);
1285 GST_DEBUG_OBJECT (ffmpegdec, "repeat_pict:%d",
1286 ffmpegdec->picture->repeat_pict);
1287 GST_DEBUG_OBJECT (ffmpegdec, "corrupted frame: %d",
1288 ! !(ffmpegdec->picture->flags & AV_FRAME_FLAG_CORRUPT));
1290 if (!gst_ffmpegviddec_negotiate (ffmpegdec, ffmpegdec->context,
1291 ffmpegdec->picture, FALSE))
1292 goto negotiation_error;
1294 if (G_UNLIKELY (out_frame->output_buffer == NULL))
1295 *ret = get_output_buffer (ffmpegdec, out_frame);
1297 if (G_UNLIKELY (*ret != GST_FLOW_OK))
1300 /* Mark corrupted frames as corrupted */
1301 if (ffmpegdec->picture->flags & AV_FRAME_FLAG_CORRUPT)
1302 GST_BUFFER_FLAG_SET (out_frame->output_buffer, GST_BUFFER_FLAG_CORRUPTED);
1304 if (ffmpegdec->pic_interlaced) {
1305 /* set interlaced flags */
1306 if (ffmpegdec->picture->repeat_pict)
1307 GST_BUFFER_FLAG_SET (out_frame->output_buffer, GST_VIDEO_BUFFER_FLAG_RFF);
1308 if (ffmpegdec->picture->top_field_first)
1309 GST_BUFFER_FLAG_SET (out_frame->output_buffer, GST_VIDEO_BUFFER_FLAG_TFF);
1310 if (ffmpegdec->picture->interlaced_frame)
1311 GST_BUFFER_FLAG_SET (out_frame->output_buffer,
1312 GST_VIDEO_BUFFER_FLAG_INTERLACED);
1316 /* so we decoded this frame, frames preceding it in decoding order
1317 * that still do not have a buffer allocated seem rather useless,
1318 * and can be discarded, due to e.g. misparsed bogus frame
1319 * or non-keyframe in skipped decoding, ...
1320 * In any case, not likely to be seen again, so discard those,
1321 * before they pile up and/or mess with timestamping */
1324 GstVideoDecoder *dec = GST_VIDEO_DECODER (ffmpegdec);
1325 gboolean old = TRUE;
1327 ol = l = gst_video_decoder_get_frames (dec);
1329 GstVideoCodecFrame *tmp = l->data;
1334 if (old && GST_VIDEO_CODEC_FRAME_IS_DECODE_ONLY (tmp)) {
1335 GST_LOG_OBJECT (dec,
1336 "discarding ghost frame %p (#%d) PTS:%" GST_TIME_FORMAT " DTS:%"
1337 GST_TIME_FORMAT, tmp, tmp->system_frame_number,
1338 GST_TIME_ARGS (tmp->pts), GST_TIME_ARGS (tmp->dts));
1339 /* drop extra ref and remove from frame list */
1340 gst_video_decoder_release_frame (dec, tmp);
1342 /* drop extra ref we got */
1343 gst_video_codec_frame_unref (tmp);
1350 av_frame_unref (ffmpegdec->picture);
1352 /* FIXME: Ideally we would remap the buffer read-only now before pushing but
1353 * libav might still have a reference to it!
1357 gst_video_decoder_finish_frame (GST_VIDEO_DECODER (ffmpegdec), out_frame);
1360 GST_DEBUG_OBJECT (ffmpegdec, "return flow %s, len %d",
1361 gst_flow_get_name (*ret), len);
1367 GST_DEBUG_OBJECT (ffmpegdec, "no output buffer");
1368 gst_video_decoder_drop_frame (GST_VIDEO_DECODER (ffmpegdec), out_frame);
1375 if (GST_PAD_IS_FLUSHING (GST_VIDEO_DECODER_SRC_PAD (ffmpegdec))) {
1376 *ret = GST_FLOW_FLUSHING;
1379 GST_WARNING_OBJECT (ffmpegdec, "Error negotiating format");
1380 *ret = GST_FLOW_NOT_NEGOTIATED;
1386 /* gst_ffmpegviddec_frame:
1388 * data: pointer to the data to decode
1389 * size: size of data in bytes
1390 * got_data: 0 if no data was decoded, != 0 otherwise.
1391 * in_time: timestamp of data
1392 * in_duration: duration of data
1393 * ret: GstFlowReturn to return in the chain function
1395 * Decode the given frame and pushes it downstream.
1397 * Returns: Number of bytes used in decoding, -1 on error/failure.
1401 gst_ffmpegviddec_frame (GstFFMpegVidDec * ffmpegdec,
1402 guint8 * data, guint size, gint * have_data, GstVideoCodecFrame * frame,
1403 GstFlowReturn * ret)
1405 GstFFMpegVidDecClass *oclass;
1408 if (G_UNLIKELY (ffmpegdec->context->codec == NULL))
1411 GST_LOG_OBJECT (ffmpegdec, "data:%p, size:%d", data, size);
1414 ffmpegdec->context->frame_number++;
1416 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
1419 gst_ffmpegviddec_video_frame (ffmpegdec, data, size, have_data, frame,
1423 GST_WARNING_OBJECT (ffmpegdec,
1424 "avdec_%s: decoding error (len: %d, have_data: %d)",
1425 oclass->in_plugin->name, len, *have_data);
1433 GST_ERROR_OBJECT (ffmpegdec, "no codec context");
1434 *ret = GST_FLOW_NOT_NEGOTIATED;
1440 gst_ffmpegviddec_drain (GstFFMpegVidDec * ffmpegdec)
1442 GstFFMpegVidDecClass *oclass;
1444 if (!ffmpegdec->opened)
1447 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
1449 if (oclass->in_plugin->capabilities & CODEC_CAP_DELAY) {
1450 gint have_data, len;
1453 GST_LOG_OBJECT (ffmpegdec,
1454 "codec has delay capabilities, calling until ffmpeg has drained everything");
1457 len = gst_ffmpegviddec_frame (ffmpegdec, NULL, 0, &have_data, NULL, &ret);
1458 } while (len >= 0 && have_data == 1 && ret == GST_FLOW_OK);
1459 avcodec_flush_buffers (ffmpegdec->context);
1463 static GstFlowReturn
1464 gst_ffmpegviddec_handle_frame (GstVideoDecoder * decoder,
1465 GstVideoCodecFrame * frame)
1467 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1468 guint8 *data, *bdata;
1469 gint size, len, have_data, bsize;
1471 GstFlowReturn ret = GST_FLOW_OK;
1472 gboolean do_padding;
1474 GST_LOG_OBJECT (ffmpegdec,
1475 "Received new data of size %" G_GSIZE_FORMAT ", dts %" GST_TIME_FORMAT
1476 ", pts:%" GST_TIME_FORMAT ", dur:%" GST_TIME_FORMAT,
1477 gst_buffer_get_size (frame->input_buffer), GST_TIME_ARGS (frame->dts),
1478 GST_TIME_ARGS (frame->pts), GST_TIME_ARGS (frame->duration));
1480 if (!gst_buffer_map (frame->input_buffer, &minfo, GST_MAP_READ)) {
1481 GST_ELEMENT_ERROR (ffmpegdec, STREAM, DECODE, ("Decoding problem"),
1482 ("Failed to map buffer for reading"));
1483 return GST_FLOW_ERROR;
1486 /* treat frame as void until a buffer is requested for it */
1487 GST_VIDEO_CODEC_FRAME_FLAG_SET (frame,
1488 GST_VIDEO_CODEC_FRAME_FLAG_DECODE_ONLY);
1493 if (bsize > 0 && (!GST_MEMORY_IS_ZERO_PADDED (minfo.memory)
1494 || (minfo.maxsize - minfo.size) < FF_INPUT_BUFFER_PADDING_SIZE)) {
1496 if (ffmpegdec->padded_size < bsize + FF_INPUT_BUFFER_PADDING_SIZE) {
1497 ffmpegdec->padded_size = bsize + FF_INPUT_BUFFER_PADDING_SIZE;
1498 ffmpegdec->padded = g_realloc (ffmpegdec->padded, ffmpegdec->padded_size);
1499 GST_LOG_OBJECT (ffmpegdec, "resized padding buffer to %d",
1500 ffmpegdec->padded_size);
1502 GST_CAT_TRACE_OBJECT (GST_CAT_PERFORMANCE, ffmpegdec,
1503 "Copy input to add padding");
1504 memcpy (ffmpegdec->padded, bdata, bsize);
1505 memset (ffmpegdec->padded + bsize, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1507 bdata = ffmpegdec->padded;
1514 guint8 tmp_padding[FF_INPUT_BUFFER_PADDING_SIZE];
1516 /* parse, if at all possible */
1521 /* add temporary padding */
1522 GST_CAT_TRACE_OBJECT (GST_CAT_PERFORMANCE, ffmpegdec,
1523 "Add temporary input padding");
1524 memcpy (tmp_padding, data + size, FF_INPUT_BUFFER_PADDING_SIZE);
1525 memset (data + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1528 /* decode a frame of audio/video now */
1530 gst_ffmpegviddec_frame (ffmpegdec, data, size, &have_data, frame, &ret);
1532 if (ret != GST_FLOW_OK) {
1533 GST_LOG_OBJECT (ffmpegdec, "breaking because of flow ret %s",
1534 gst_flow_get_name (ret));
1535 /* bad flow return, make sure we discard all data and exit */
1541 memcpy (data + size, tmp_padding, FF_INPUT_BUFFER_PADDING_SIZE);
1544 if (len == 0 && have_data == 0) {
1545 /* nothing was decoded, this could be because no data was available or
1546 * because we were skipping frames.
1547 * If we have no context we must exit and wait for more data, we keep the
1549 GST_LOG_OBJECT (ffmpegdec, "Decoding didn't return any data, breaking");
1554 /* a decoding error happened, we must break and try again with next data. */
1555 GST_LOG_OBJECT (ffmpegdec, "Decoding error, breaking");
1560 /* prepare for the next round, for codecs with a context we did this
1561 * already when using the parser. */
1567 GST_LOG_OBJECT (ffmpegdec, "Before (while bsize>0). bsize:%d , bdata:%p",
1569 } while (bsize > 0);
1572 GST_DEBUG_OBJECT (ffmpegdec, "Dropping %d bytes of data", bsize);
1574 gst_buffer_unmap (frame->input_buffer, &minfo);
1575 gst_video_codec_frame_unref (frame);
1582 gst_ffmpegviddec_start (GstVideoDecoder * decoder)
1584 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1585 GstFFMpegVidDecClass *oclass;
1587 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
1589 GST_OBJECT_LOCK (ffmpegdec);
1590 gst_ffmpeg_avcodec_close (ffmpegdec->context);
1591 if (avcodec_get_context_defaults3 (ffmpegdec->context, oclass->in_plugin) < 0) {
1592 GST_DEBUG_OBJECT (ffmpegdec, "Failed to set context defaults");
1593 GST_OBJECT_UNLOCK (ffmpegdec);
1596 ffmpegdec->context->opaque = ffmpegdec;
1597 GST_OBJECT_UNLOCK (ffmpegdec);
1603 gst_ffmpegviddec_stop (GstVideoDecoder * decoder)
1605 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1607 GST_OBJECT_LOCK (ffmpegdec);
1608 gst_ffmpegviddec_close (ffmpegdec, FALSE);
1609 GST_OBJECT_UNLOCK (ffmpegdec);
1610 g_free (ffmpegdec->padded);
1611 ffmpegdec->padded = NULL;
1612 ffmpegdec->padded_size = 0;
1613 if (ffmpegdec->input_state)
1614 gst_video_codec_state_unref (ffmpegdec->input_state);
1615 ffmpegdec->input_state = NULL;
1616 if (ffmpegdec->output_state)
1617 gst_video_codec_state_unref (ffmpegdec->output_state);
1618 ffmpegdec->output_state = NULL;
1620 ffmpegdec->pic_pix_fmt = 0;
1621 ffmpegdec->pic_width = 0;
1622 ffmpegdec->pic_height = 0;
1623 ffmpegdec->pic_par_n = 0;
1624 ffmpegdec->pic_par_d = 0;
1625 ffmpegdec->ctx_ticks = 0;
1626 ffmpegdec->ctx_time_n = 0;
1627 ffmpegdec->ctx_time_d = 0;
1632 static GstFlowReturn
1633 gst_ffmpegviddec_finish (GstVideoDecoder * decoder)
1635 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1637 gst_ffmpegviddec_drain (ffmpegdec);
1643 gst_ffmpegviddec_flush (GstVideoDecoder * decoder)
1645 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1647 if (ffmpegdec->opened)
1648 avcodec_flush_buffers (ffmpegdec->context);
1654 gst_ffmpegviddec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query)
1656 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1657 GstVideoCodecState *state;
1658 GstBufferPool *pool;
1659 guint size, min, max;
1660 GstStructure *config;
1661 gboolean have_videometa, have_alignment, update_pool = FALSE;
1662 GstAllocator *allocator = NULL;
1663 GstAllocationParams params = { 0, 15, 0, 0, };
1665 if (!GST_VIDEO_DECODER_CLASS (parent_class)->decide_allocation (decoder,
1669 state = gst_video_decoder_get_output_state (decoder);
1671 if (gst_query_get_n_allocation_params (query) > 0) {
1672 gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
1673 params.align = MAX (params.align, 15);
1675 gst_query_add_allocation_param (query, allocator, ¶ms);
1678 gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
1680 /* Don't use pool that can't grow, as we don't know how many buffer we'll
1681 * need, otherwise we may stall */
1682 if (max != 0 && max < REQUIRED_POOL_MAX_BUFFERS) {
1683 gst_object_unref (pool);
1684 pool = gst_video_buffer_pool_new ();
1688 /* if there is an allocator, also drop it, as it might be the reason we
1689 * have this limit. Default will be used */
1691 gst_object_unref (allocator);
1696 config = gst_buffer_pool_get_config (pool);
1697 gst_buffer_pool_config_set_params (config, state->caps, size, min, max);
1698 /* we are happy with the default allocator but we would like to have 16 bytes
1699 * aligned and padded memory */
1700 gst_buffer_pool_config_set_allocator (config, allocator, ¶ms);
1703 gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
1705 gst_buffer_pool_config_add_option (config,
1706 GST_BUFFER_POOL_OPTION_VIDEO_META);
1709 gst_buffer_pool_has_option (pool, GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
1711 /* we can only enable the alignment if downstream supports the
1713 if (have_alignment && have_videometa) {
1714 GstVideoAlignment align;
1716 gint linesize_align[4];
1720 width = GST_VIDEO_INFO_WIDTH (&state->info);
1721 height = GST_VIDEO_INFO_HEIGHT (&state->info);
1722 /* let ffmpeg find the alignment and padding */
1723 avcodec_align_dimensions2 (ffmpegdec->context, &width, &height,
1727 context->flags & CODEC_FLAG_EMU_EDGE ? 0 : avcodec_get_edge_width ();
1728 /* increase the size for the padding */
1730 height += edge << 1;
1732 align.padding_top = edge;
1733 align.padding_left = edge;
1734 align.padding_right = width - GST_VIDEO_INFO_WIDTH (&state->info) - edge;
1735 align.padding_bottom = height - GST_VIDEO_INFO_HEIGHT (&state->info) - edge;
1737 /* add extra padding to match libav buffer allocation sizes */
1738 align.padding_bottom++;
1740 for (i = 0; i < GST_VIDEO_MAX_PLANES; i++)
1741 align.stride_align[i] =
1742 (linesize_align[i] > 0 ? linesize_align[i] - 1 : 0);
1744 GST_DEBUG_OBJECT (ffmpegdec, "aligned dimension %dx%d -> %dx%d "
1745 "padding t:%u l:%u r:%u b:%u, stride_align %d:%d:%d:%d",
1746 GST_VIDEO_INFO_WIDTH (&state->info),
1747 GST_VIDEO_INFO_HEIGHT (&state->info), width, height, align.padding_top,
1748 align.padding_left, align.padding_right, align.padding_bottom,
1749 align.stride_align[0], align.stride_align[1], align.stride_align[2],
1750 align.stride_align[3]);
1752 gst_buffer_pool_config_add_option (config,
1753 GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
1754 gst_buffer_pool_config_set_video_alignment (config, &align);
1756 if (ffmpegdec->direct_rendering) {
1757 GstFFMpegVidDecClass *oclass;
1759 GST_DEBUG_OBJECT (ffmpegdec, "trying to enable direct rendering");
1761 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
1763 if (oclass->in_plugin->capabilities & CODEC_CAP_DR1) {
1764 GST_DEBUG_OBJECT (ffmpegdec, "enabled direct rendering");
1765 ffmpegdec->current_dr = TRUE;
1767 GST_DEBUG_OBJECT (ffmpegdec, "direct rendering not supported");
1771 GST_DEBUG_OBJECT (ffmpegdec,
1772 "alignment or videometa not supported, disable direct rendering");
1774 /* disable direct rendering. This will make us use the fallback ffmpeg
1775 * picture allocation code with padding etc. We will then do the final
1776 * copy (with cropping) into a buffer from our pool */
1777 ffmpegdec->current_dr = FALSE;
1781 gst_buffer_pool_set_config (pool, config);
1784 gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
1786 gst_object_unref (pool);
1788 gst_object_unref (allocator);
1789 gst_video_codec_state_unref (state);
1795 gst_ffmpegviddec_propose_allocation (GstVideoDecoder * decoder,
1798 GstAllocationParams params;
1800 gst_allocation_params_init (¶ms);
1801 params.flags = GST_MEMORY_FLAG_ZERO_PADDED;
1803 params.padding = FF_INPUT_BUFFER_PADDING_SIZE;
1804 /* we would like to have some padding so that we don't have to
1805 * memcpy. We don't suggest an allocator. */
1806 gst_query_add_allocation_param (query, NULL, ¶ms);
1808 return GST_VIDEO_DECODER_CLASS (parent_class)->propose_allocation (decoder,
1813 gst_ffmpegviddec_set_property (GObject * object,
1814 guint prop_id, const GValue * value, GParamSpec * pspec)
1816 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) object;
1820 ffmpegdec->lowres = ffmpegdec->context->lowres = g_value_get_enum (value);
1822 case PROP_SKIPFRAME:
1823 ffmpegdec->skip_frame = ffmpegdec->context->skip_frame =
1824 g_value_get_enum (value);
1826 case PROP_DIRECT_RENDERING:
1827 ffmpegdec->direct_rendering = g_value_get_boolean (value);
1830 ffmpegdec->debug_mv = ffmpegdec->context->debug_mv =
1831 g_value_get_boolean (value);
1833 case PROP_MAX_THREADS:
1834 ffmpegdec->max_threads = g_value_get_int (value);
1836 case PROP_OUTPUT_CORRUPT:
1837 ffmpegdec->output_corrupt = g_value_get_boolean (value);
1840 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1846 gst_ffmpegviddec_get_property (GObject * object,
1847 guint prop_id, GValue * value, GParamSpec * pspec)
1849 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) object;
1853 g_value_set_enum (value, ffmpegdec->context->lowres);
1855 case PROP_SKIPFRAME:
1856 g_value_set_enum (value, ffmpegdec->context->skip_frame);
1858 case PROP_DIRECT_RENDERING:
1859 g_value_set_boolean (value, ffmpegdec->direct_rendering);
1862 g_value_set_boolean (value, ffmpegdec->context->debug_mv);
1864 case PROP_MAX_THREADS:
1865 g_value_set_int (value, ffmpegdec->max_threads);
1867 case PROP_OUTPUT_CORRUPT:
1868 g_value_set_boolean (value, ffmpegdec->output_corrupt);
1871 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1877 gst_ffmpegviddec_register (GstPlugin * plugin)
1879 GTypeInfo typeinfo = {
1880 sizeof (GstFFMpegVidDecClass),
1881 (GBaseInitFunc) gst_ffmpegviddec_base_init,
1883 (GClassInitFunc) gst_ffmpegviddec_class_init,
1886 sizeof (GstFFMpegVidDec),
1888 (GInstanceInitFunc) gst_ffmpegviddec_init,
1894 in_plugin = av_codec_next (NULL);
1896 GST_LOG ("Registering decoders");
1902 /* only video decoders */
1903 if (!av_codec_is_decoder (in_plugin)
1904 || in_plugin->type != AVMEDIA_TYPE_VIDEO)
1907 /* no quasi-codecs, please */
1908 if (in_plugin->id == AV_CODEC_ID_RAWVIDEO ||
1909 in_plugin->id == AV_CODEC_ID_V210 ||
1910 in_plugin->id == AV_CODEC_ID_V210X ||
1911 in_plugin->id == AV_CODEC_ID_R210 ||
1912 (in_plugin->id >= AV_CODEC_ID_PCM_S16LE &&
1913 in_plugin->id <= AV_CODEC_ID_PCM_BLURAY)) {
1917 /* No decoders depending on external libraries (we don't build them, but
1918 * people who build against an external ffmpeg might have them.
1919 * We have native gstreamer plugins for all of those libraries anyway. */
1920 if (!strncmp (in_plugin->name, "lib", 3)) {
1922 ("Not using external library decoder %s. Use the gstreamer-native ones instead.",
1927 /* No vdpau plugins until we can figure out how to properly use them
1928 * outside of ffmpeg. */
1929 if (g_str_has_suffix (in_plugin->name, "_vdpau")) {
1931 ("Ignoring VDPAU decoder %s. We can't handle this outside of ffmpeg",
1936 if (g_str_has_suffix (in_plugin->name, "_xvmc")) {
1938 ("Ignoring XVMC decoder %s. We can't handle this outside of ffmpeg",
1943 GST_DEBUG ("Trying plugin %s [%s]", in_plugin->name, in_plugin->long_name);
1945 /* no codecs for which we're GUARANTEED to have better alternatives */
1946 /* MPEG1VIDEO : the mpeg2video decoder is preferred */
1947 /* MP1 : Use MP3 for decoding */
1948 /* MP2 : Use MP3 for decoding */
1949 /* Theora: Use libtheora based theoradec */
1950 if (!strcmp (in_plugin->name, "gif") ||
1951 !strcmp (in_plugin->name, "theora") ||
1952 !strcmp (in_plugin->name, "mpeg1video") ||
1953 strstr (in_plugin->name, "crystalhd") != NULL ||
1954 !strcmp (in_plugin->name, "ass") ||
1955 !strcmp (in_plugin->name, "srt") ||
1956 !strcmp (in_plugin->name, "pgssub") ||
1957 !strcmp (in_plugin->name, "dvdsub") ||
1958 !strcmp (in_plugin->name, "dvbsub")) {
1959 GST_LOG ("Ignoring decoder %s", in_plugin->name);
1963 /* construct the type */
1964 if (!strcmp (in_plugin->name, "hevc")) {
1965 plugin_name = g_strdup ("h265");
1967 plugin_name = g_strdup ((gchar *) in_plugin->name);
1969 g_strdelimit (plugin_name, NULL, '_');
1970 type_name = g_strdup_printf ("avdec_%s", plugin_name);
1971 g_free (plugin_name);
1973 type = g_type_from_name (type_name);
1976 /* create the gtype now */
1978 g_type_register_static (GST_TYPE_VIDEO_DECODER, type_name, &typeinfo,
1980 g_type_set_qdata (type, GST_FFDEC_PARAMS_QDATA, (gpointer) in_plugin);
1983 /* (Ronald) MPEG-4 gets a higher priority because it has been well-
1984 * tested and by far outperforms divxdec/xviddec - so we prefer it.
1985 * msmpeg4v3 same, as it outperforms divxdec for divx3 playback.
1986 * VC1/WMV3 are not working and thus unpreferred for now. */
1987 switch (in_plugin->id) {
1988 case AV_CODEC_ID_MPEG4:
1989 case AV_CODEC_ID_MSMPEG4V3:
1990 case AV_CODEC_ID_H264:
1991 case AV_CODEC_ID_HEVC:
1992 case AV_CODEC_ID_RV10:
1993 case AV_CODEC_ID_RV20:
1994 case AV_CODEC_ID_RV30:
1995 case AV_CODEC_ID_RV40:
1996 rank = GST_RANK_PRIMARY;
1998 /* DVVIDEO: we have a good dv decoder, fast on both ppc as well as x86.
1999 * They say libdv's quality is better though. leave as secondary.
2000 * note: if you change this, see the code in gstdv.c in good/ext/dv.
2002 case AV_CODEC_ID_DVVIDEO:
2003 rank = GST_RANK_SECONDARY;
2006 rank = GST_RANK_MARGINAL;
2009 if (!gst_element_register (plugin, type_name, rank, type)) {
2010 g_warning ("Failed to register %s", type_name);
2018 in_plugin = av_codec_next (in_plugin);
2021 GST_LOG ("Finished Registering decoders");