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);
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;
321 ffmpegdec->current_dr = FALSE;
323 gst_buffer_replace (&ffmpegdec->palette, NULL);
325 if (ffmpegdec->context->extradata) {
326 av_free (ffmpegdec->context->extradata);
327 ffmpegdec->context->extradata = NULL;
329 if (ffmpegdec->context->slice_offset) {
330 g_free (ffmpegdec->context->slice_offset);
331 ffmpegdec->context->slice_offset = NULL;
334 if (avcodec_get_context_defaults3 (ffmpegdec->context,
335 oclass->in_plugin) < 0) {
336 GST_DEBUG_OBJECT (ffmpegdec, "Failed to set context defaults");
339 ffmpegdec->context->opaque = ffmpegdec;
346 gst_ffmpegviddec_open (GstFFMpegVidDec * ffmpegdec)
348 GstFFMpegVidDecClass *oclass;
351 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
353 if (gst_ffmpeg_avcodec_open (ffmpegdec->context, oclass->in_plugin) < 0)
356 for (i = 0; i < G_N_ELEMENTS (ffmpegdec->stride); i++)
357 ffmpegdec->stride[i] = -1;
359 ffmpegdec->opened = TRUE;
360 ffmpegdec->is_realvideo = FALSE;
362 GST_LOG_OBJECT (ffmpegdec, "Opened libav codec %s, id %d",
363 oclass->in_plugin->name, oclass->in_plugin->id);
365 switch (oclass->in_plugin->id) {
366 case AV_CODEC_ID_RV10:
367 case AV_CODEC_ID_RV30:
368 case AV_CODEC_ID_RV20:
369 case AV_CODEC_ID_RV40:
370 ffmpegdec->is_realvideo = TRUE;
373 GST_LOG_OBJECT (ffmpegdec, "Parser deactivated for format");
377 gst_ffmpegviddec_context_set_flags (ffmpegdec->context,
378 CODEC_FLAG_OUTPUT_CORRUPT, ffmpegdec->output_corrupt);
385 gst_ffmpegviddec_close (ffmpegdec, TRUE);
386 GST_DEBUG_OBJECT (ffmpegdec, "avdec_%s: Failed to open libav codec",
387 oclass->in_plugin->name);
393 gst_ffmpegviddec_get_palette (GstFFMpegVidDec * ffmpegdec,
394 GstVideoCodecState * state)
396 GstStructure *str = gst_caps_get_structure (state->caps, 0);
397 const GValue *palette_v;
400 /* do we have a palette? */
401 if ((palette_v = gst_structure_get_value (str, "palette_data"))) {
402 palette = gst_value_get_buffer (palette_v);
403 GST_DEBUG ("got palette data %p", palette);
404 if (gst_buffer_get_size (palette) >= AVPALETTE_SIZE) {
405 gst_buffer_replace (&ffmpegdec->palette, palette);
412 gst_ffmpegviddec_set_format (GstVideoDecoder * decoder,
413 GstVideoCodecState * state)
415 GstFFMpegVidDec *ffmpegdec;
416 GstFFMpegVidDecClass *oclass;
417 GstClockTime latency = GST_CLOCK_TIME_NONE;
418 gboolean ret = FALSE;
420 ffmpegdec = (GstFFMpegVidDec *) decoder;
421 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
423 if (ffmpegdec->last_caps != NULL &&
424 gst_caps_is_equal (ffmpegdec->last_caps, state->caps)) {
428 GST_DEBUG_OBJECT (ffmpegdec, "setcaps called");
430 GST_OBJECT_LOCK (ffmpegdec);
431 /* stupid check for VC1 */
432 if ((oclass->in_plugin->id == AV_CODEC_ID_WMV3) ||
433 (oclass->in_plugin->id == AV_CODEC_ID_VC1))
434 oclass->in_plugin->id = gst_ffmpeg_caps_to_codecid (state->caps, NULL);
436 /* close old session */
437 if (ffmpegdec->opened) {
438 GST_OBJECT_UNLOCK (ffmpegdec);
439 gst_ffmpegviddec_drain (ffmpegdec);
440 GST_OBJECT_LOCK (ffmpegdec);
441 if (!gst_ffmpegviddec_close (ffmpegdec, TRUE)) {
442 GST_OBJECT_UNLOCK (ffmpegdec);
445 ffmpegdec->pic_pix_fmt = 0;
446 ffmpegdec->pic_width = 0;
447 ffmpegdec->pic_height = 0;
448 ffmpegdec->pic_par_n = 0;
449 ffmpegdec->pic_par_d = 0;
450 ffmpegdec->ctx_ticks = 0;
451 ffmpegdec->ctx_time_n = 0;
452 ffmpegdec->ctx_time_d = 0;
455 gst_caps_replace (&ffmpegdec->last_caps, state->caps);
457 /* set buffer functions */
458 ffmpegdec->context->get_buffer2 = gst_ffmpegviddec_get_buffer2;
459 ffmpegdec->context->get_buffer = NULL;
460 ffmpegdec->context->reget_buffer = NULL;
461 ffmpegdec->context->release_buffer = NULL;
462 ffmpegdec->context->draw_horiz_band = NULL;
464 /* reset coded_width/_height to prevent it being reused from last time when
465 * the codec is opened again, causing a mismatch and possible
466 * segfault/corruption. (Common scenario when renegotiating caps) */
467 ffmpegdec->context->coded_width = 0;
468 ffmpegdec->context->coded_height = 0;
470 GST_LOG_OBJECT (ffmpegdec, "size %dx%d", ffmpegdec->context->width,
471 ffmpegdec->context->height);
473 /* FIXME : Create a method that takes GstVideoCodecState instead */
474 /* get size and so */
475 gst_ffmpeg_caps_with_codecid (oclass->in_plugin->id,
476 oclass->in_plugin->type, state->caps, ffmpegdec->context);
478 GST_LOG_OBJECT (ffmpegdec, "size after %dx%d", ffmpegdec->context->width,
479 ffmpegdec->context->height);
481 gst_ffmpegviddec_get_palette (ffmpegdec, state);
483 if (!ffmpegdec->context->time_base.den || !ffmpegdec->context->time_base.num) {
484 GST_DEBUG_OBJECT (ffmpegdec, "forcing 25/1 framerate");
485 ffmpegdec->context->time_base.num = 1;
486 ffmpegdec->context->time_base.den = 25;
489 /* workaround encoder bugs */
490 ffmpegdec->context->workaround_bugs |= FF_BUG_AUTODETECT;
491 ffmpegdec->context->err_recognition = 1;
494 ffmpegdec->context->lowres = ffmpegdec->lowres;
495 ffmpegdec->context->skip_frame = ffmpegdec->skip_frame;
497 /* ffmpeg can draw motion vectors on top of the image (not every decoder
499 ffmpegdec->context->debug_mv = ffmpegdec->debug_mv;
505 if (ffmpegdec->max_threads == 0) {
506 if (!(oclass->in_plugin->capabilities & CODEC_CAP_AUTO_THREADS))
507 ffmpegdec->context->thread_count = gst_ffmpeg_auto_max_threads ();
509 ffmpegdec->context->thread_count = 0;
511 ffmpegdec->context->thread_count = ffmpegdec->max_threads;
513 query = gst_query_new_latency ();
515 /* Check if upstream is live. If it isn't we can enable frame based
516 * threading, which is adding latency */
517 if (gst_pad_peer_query (GST_VIDEO_DECODER_SINK_PAD (ffmpegdec), query)) {
518 gst_query_parse_latency (query, &is_live, NULL, NULL);
520 gst_query_unref (query);
523 ffmpegdec->context->thread_type = FF_THREAD_SLICE;
525 ffmpegdec->context->thread_type = FF_THREAD_SLICE | FF_THREAD_FRAME;
528 /* open codec - we don't select an output pix_fmt yet,
529 * simply because we don't know! We only get it
530 * during playback... */
531 if (!gst_ffmpegviddec_open (ffmpegdec))
534 if (ffmpegdec->input_state)
535 gst_video_codec_state_unref (ffmpegdec->input_state);
536 ffmpegdec->input_state = gst_video_codec_state_ref (state);
538 if (ffmpegdec->input_state->info.fps_n) {
539 GstVideoInfo *info = &ffmpegdec->input_state->info;
540 latency = gst_util_uint64_scale_ceil (
541 (ffmpegdec->context->has_b_frames) * GST_SECOND, info->fps_d,
548 GST_OBJECT_UNLOCK (ffmpegdec);
550 if (GST_CLOCK_TIME_IS_VALID (latency))
551 gst_video_decoder_set_latency (decoder, latency, latency);
558 GST_DEBUG_OBJECT (ffmpegdec, "Failed to open");
565 GstFFMpegVidDec *ffmpegdec;
566 GstVideoCodecFrame *frame;
568 GstVideoFrame vframe;
570 AVBufferRef *avbuffer;
571 } GstFFMpegVidDecVideoFrame;
573 static GstFFMpegVidDecVideoFrame *
574 gst_ffmpegviddec_video_frame_new (GstFFMpegVidDec * ffmpegdec,
575 GstVideoCodecFrame * frame)
577 GstFFMpegVidDecVideoFrame *dframe;
579 dframe = g_slice_new0 (GstFFMpegVidDecVideoFrame);
580 dframe->ffmpegdec = ffmpegdec;
581 dframe->frame = frame;
583 GST_DEBUG_OBJECT (ffmpegdec, "new video frame %p", dframe);
589 gst_ffmpegviddec_video_frame_free (GstFFMpegVidDec * ffmpegdec,
590 GstFFMpegVidDecVideoFrame * frame)
592 GST_DEBUG_OBJECT (ffmpegdec, "free video frame %p", frame);
595 gst_video_frame_unmap (&frame->vframe);
596 gst_video_decoder_release_frame (GST_VIDEO_DECODER (ffmpegdec), frame->frame);
597 gst_buffer_replace (&frame->buffer, NULL);
598 if (frame->avbuffer) {
599 av_buffer_unref (&frame->avbuffer);
601 g_slice_free (GstFFMpegVidDecVideoFrame, frame);
605 dummy_free_buffer (void *opaque, uint8_t * data)
607 GstFFMpegVidDecVideoFrame *frame = opaque;
609 gst_ffmpegviddec_video_frame_free (frame->ffmpegdec, frame);
612 /* called when ffmpeg wants us to allocate a buffer to write the decoded frame
613 * into. We try to give it memory from our pool */
615 gst_ffmpegviddec_get_buffer2 (AVCodecContext * context, AVFrame * picture,
618 GstVideoCodecFrame *frame;
619 GstFFMpegVidDecVideoFrame *dframe;
620 GstFFMpegVidDec *ffmpegdec;
625 ffmpegdec = (GstFFMpegVidDec *) context->opaque;
627 GST_DEBUG_OBJECT (ffmpegdec, "getting buffer picture %p", picture);
629 /* apply the last info we have seen to this picture, when we get the
630 * picture back from ffmpeg we can use this to correctly timestamp the output
632 GST_DEBUG_OBJECT (ffmpegdec, "opaque value SN %d",
633 (gint32) picture->reordered_opaque);
636 gst_video_decoder_get_frame (GST_VIDEO_DECODER (ffmpegdec),
637 picture->reordered_opaque);
638 if (G_UNLIKELY (frame == NULL))
641 /* now it has a buffer allocated, so it is real and will also
643 GST_VIDEO_CODEC_FRAME_FLAG_UNSET (frame,
644 GST_VIDEO_CODEC_FRAME_FLAG_DECODE_ONLY);
646 if (G_UNLIKELY (frame->output_buffer != NULL))
647 goto duplicate_frame;
649 /* GstFFMpegVidDecVideoFrame receives the frame ref */
650 if (picture->opaque) {
651 dframe = picture->opaque;
652 dframe->frame = frame;
654 picture->opaque = dframe =
655 gst_ffmpegviddec_video_frame_new (ffmpegdec, frame);
658 GST_DEBUG_OBJECT (ffmpegdec, "storing opaque %p", dframe);
660 /* If the picture format changed but we already negotiated before,
661 * we will have to do fallback allocation until output and input
662 * formats are in sync again. We will renegotiate on the output
663 * We use the info from the context which correspond to the input format,
664 * the info from the picture correspond to memory requires, not to the actual
667 if (ffmpegdec->pic_width != 0 &&
668 !(ffmpegdec->pic_width == context->width
669 && ffmpegdec->pic_height == context->height
670 && ffmpegdec->pic_pix_fmt == picture->format))
673 if (!ffmpegdec->current_dr)
677 gst_video_decoder_allocate_output_frame (GST_VIDEO_DECODER (ffmpegdec),
679 if (ret != GST_FLOW_OK)
682 /* piggy-backed alloc'ed on the frame,
683 * and there was much rejoicing and we are grateful.
684 * Now take away buffer from frame, we will give it back later when decoded.
685 * This allows multiple request for a buffer per frame; unusual but possible. */
686 gst_buffer_replace (&dframe->buffer, frame->output_buffer);
687 gst_buffer_replace (&frame->output_buffer, NULL);
690 info = &ffmpegdec->output_state->info;
691 if (!gst_video_frame_map (&dframe->vframe, info, dframe->buffer,
694 dframe->mapped = TRUE;
696 for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
697 if (c < GST_VIDEO_INFO_N_PLANES (info)) {
698 picture->data[c] = GST_VIDEO_FRAME_PLANE_DATA (&dframe->vframe, c);
699 picture->linesize[c] = GST_VIDEO_FRAME_PLANE_STRIDE (&dframe->vframe, c);
701 /* libav does not allow stride changes currently, fall back to
702 * non-direct rendering here:
703 * https://bugzilla.gnome.org/show_bug.cgi?id=704769
704 * https://bugzilla.libav.org/show_bug.cgi?id=556
706 if (ffmpegdec->stride[c] == -1) {
707 ffmpegdec->stride[c] = picture->linesize[c];
708 } else if (picture->linesize[c] != ffmpegdec->stride[c]) {
709 GST_LOG_OBJECT (ffmpegdec,
710 "No direct rendering, stride changed c=%d %d->%d", c,
711 ffmpegdec->stride[c], picture->linesize[c]);
713 for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
714 picture->data[c] = NULL;
715 picture->linesize[c] = 0;
716 av_buffer_unref (&picture->buf[c]);
718 gst_video_frame_unmap (&dframe->vframe);
719 dframe->mapped = FALSE;
720 gst_buffer_replace (&dframe->buffer, NULL);
721 ffmpegdec->current_dr = FALSE;
726 picture->data[c] = NULL;
727 picture->linesize[c] = 0;
729 GST_LOG_OBJECT (ffmpegdec, "linesize %d, data %p", picture->linesize[c],
733 picture->buf[0] = av_buffer_create (NULL, 0, dummy_free_buffer, dframe, 0);
735 /* tell ffmpeg we own this buffer, tranfer the ref we have on the buffer to
736 * the opaque data. */
737 picture->type = FF_BUFFER_TYPE_USER;
739 GST_LOG_OBJECT (ffmpegdec, "returned frame %p", dframe->buffer);
746 GST_LOG_OBJECT (ffmpegdec, "direct rendering disabled, fallback alloc");
751 /* alloc default buffer when we can't get one from downstream */
752 GST_LOG_OBJECT (ffmpegdec, "alloc failed, fallback alloc");
757 /* alloc default buffer when we can't get one from downstream */
758 GST_LOG_OBJECT (ffmpegdec, "failed to map frame, fallback alloc");
759 gst_buffer_replace (&dframe->buffer, NULL);
765 int ret = avcodec_default_get_buffer2 (context, picture, flags);
767 for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
768 ffmpegdec->stride[c] = picture->linesize[c];
770 /* Wrap our buffer around the default one to be able to have a callback
771 * when our data can be freed. Just putting our data into the first free
772 * buffer might not work if there are too many allocated already
774 if (picture->buf[0]) {
775 dframe->avbuffer = picture->buf[0];
777 av_buffer_create (picture->buf[0]->data, picture->buf[0]->size,
778 dummy_free_buffer, dframe, 0);
781 av_buffer_create (NULL, 0, dummy_free_buffer, dframe, 0);
788 GST_WARNING_OBJECT (ffmpegdec, "already alloc'ed output buffer for frame");
789 gst_video_codec_frame_unref (frame);
794 GST_WARNING_OBJECT (ffmpegdec, "Couldn't get codec frame !");
800 picture_changed (GstFFMpegVidDec * ffmpegdec, AVFrame * picture)
802 return !(ffmpegdec->pic_width == picture->width
803 && ffmpegdec->pic_height == picture->height
804 && ffmpegdec->pic_pix_fmt == picture->format
805 && ffmpegdec->pic_par_n == picture->sample_aspect_ratio.num
806 && ffmpegdec->pic_par_d == picture->sample_aspect_ratio.den
807 && ffmpegdec->pic_interlaced == picture->interlaced_frame);
811 context_changed (GstFFMpegVidDec * ffmpegdec, AVCodecContext * context)
813 return !(ffmpegdec->ctx_ticks == context->ticks_per_frame
814 && ffmpegdec->ctx_time_n == context->time_base.num
815 && ffmpegdec->ctx_time_d == context->time_base.den);
819 update_video_context (GstFFMpegVidDec * ffmpegdec, AVCodecContext * context,
822 if (!picture_changed (ffmpegdec, picture)
823 && !context_changed (ffmpegdec, context))
826 GST_DEBUG_OBJECT (ffmpegdec,
827 "Renegotiating video from %dx%d@ %d:%d PAR %d/%d fps pixfmt %d to %dx%d@ %d:%d PAR %d/%d fps pixfmt %d",
828 ffmpegdec->pic_width, ffmpegdec->pic_height,
829 ffmpegdec->pic_par_n, ffmpegdec->pic_par_d,
830 ffmpegdec->ctx_time_n, ffmpegdec->ctx_time_d,
831 ffmpegdec->pic_pix_fmt,
832 picture->width, picture->height,
833 picture->sample_aspect_ratio.num,
834 picture->sample_aspect_ratio.den,
835 context->time_base.num, context->time_base.den, picture->format);
837 ffmpegdec->pic_pix_fmt = picture->format;
838 ffmpegdec->pic_width = picture->width;
839 ffmpegdec->pic_height = picture->height;
840 ffmpegdec->pic_par_n = picture->sample_aspect_ratio.num;
841 ffmpegdec->pic_par_d = picture->sample_aspect_ratio.den;
842 ffmpegdec->pic_interlaced = picture->interlaced_frame;
843 ffmpegdec->ctx_ticks = context->ticks_per_frame;
844 ffmpegdec->ctx_time_n = context->time_base.num;
845 ffmpegdec->ctx_time_d = context->time_base.den;
851 gst_ffmpegviddec_update_par (GstFFMpegVidDec * ffmpegdec,
852 GstVideoInfo * in_info, GstVideoInfo * out_info)
854 gboolean demuxer_par_set = FALSE;
855 gboolean decoder_par_set = FALSE;
856 gint demuxer_num = 1, demuxer_denom = 1;
857 gint decoder_num = 1, decoder_denom = 1;
859 if (in_info->par_n && in_info->par_d) {
860 demuxer_num = in_info->par_n;
861 demuxer_denom = in_info->par_d;
862 demuxer_par_set = TRUE;
863 GST_DEBUG_OBJECT (ffmpegdec, "Demuxer PAR: %d:%d", demuxer_num,
867 if (ffmpegdec->pic_par_n && ffmpegdec->pic_par_d) {
868 decoder_num = ffmpegdec->pic_par_n;
869 decoder_denom = ffmpegdec->pic_par_d;
870 decoder_par_set = TRUE;
871 GST_DEBUG_OBJECT (ffmpegdec, "Decoder PAR: %d:%d", decoder_num,
875 if (!demuxer_par_set && !decoder_par_set)
878 if (demuxer_par_set && !decoder_par_set)
879 goto use_demuxer_par;
881 if (decoder_par_set && !demuxer_par_set)
882 goto use_decoder_par;
884 /* Both the demuxer and the decoder provide a PAR. If one of
885 * the two PARs is 1:1 and the other one is not, use the one
886 * that is not 1:1. */
887 if (demuxer_num == demuxer_denom && decoder_num != decoder_denom)
888 goto use_decoder_par;
890 if (decoder_num == decoder_denom && demuxer_num != demuxer_denom)
891 goto use_demuxer_par;
893 /* Both PARs are non-1:1, so use the PAR provided by the demuxer */
894 goto use_demuxer_par;
898 GST_DEBUG_OBJECT (ffmpegdec,
899 "Setting decoder provided pixel-aspect-ratio of %u:%u", decoder_num,
901 out_info->par_n = decoder_num;
902 out_info->par_d = decoder_denom;
907 GST_DEBUG_OBJECT (ffmpegdec,
908 "Setting demuxer provided pixel-aspect-ratio of %u:%u", demuxer_num,
910 out_info->par_n = demuxer_num;
911 out_info->par_d = demuxer_denom;
916 GST_DEBUG_OBJECT (ffmpegdec,
917 "Neither demuxer nor codec provide a pixel-aspect-ratio");
925 gst_ffmpegviddec_negotiate (GstFFMpegVidDec * ffmpegdec,
926 AVCodecContext * context, AVFrame * picture)
929 GstVideoInfo *in_info, *out_info;
930 GstVideoCodecState *output_state;
933 if (!update_video_context (ffmpegdec, context, picture))
936 fmt = gst_ffmpeg_pixfmt_to_videoformat (ffmpegdec->pic_pix_fmt);
937 if (G_UNLIKELY (fmt == GST_VIDEO_FORMAT_UNKNOWN))
941 gst_video_decoder_set_output_state (GST_VIDEO_DECODER (ffmpegdec), fmt,
942 ffmpegdec->pic_width, ffmpegdec->pic_height, ffmpegdec->input_state);
943 if (ffmpegdec->output_state)
944 gst_video_codec_state_unref (ffmpegdec->output_state);
945 ffmpegdec->output_state = output_state;
947 in_info = &ffmpegdec->input_state->info;
948 out_info = &ffmpegdec->output_state->info;
950 /* set the interlaced flag */
951 if (ffmpegdec->pic_interlaced)
952 out_info->interlace_mode = GST_VIDEO_INTERLACE_MODE_MIXED;
954 out_info->interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
956 switch (context->chroma_sample_location) {
958 out_info->chroma_site = GST_VIDEO_CHROMA_SITE_MPEG2;
961 out_info->chroma_site = GST_VIDEO_CHROMA_SITE_JPEG;
964 out_info->chroma_site = GST_VIDEO_CHROMA_SITE_DV;
967 out_info->chroma_site = GST_VIDEO_CHROMA_SITE_V_COSITED;
973 /* try to find a good framerate */
974 if ((in_info->fps_d && in_info->fps_n) ||
975 GST_VIDEO_INFO_FLAG_IS_SET (in_info, GST_VIDEO_FLAG_VARIABLE_FPS)) {
976 /* take framerate from input when it was specified (#313970) */
977 fps_n = in_info->fps_n;
978 fps_d = in_info->fps_d;
980 fps_n = ffmpegdec->ctx_time_d / ffmpegdec->ctx_ticks;
981 fps_d = ffmpegdec->ctx_time_n;
984 GST_LOG_OBJECT (ffmpegdec, "invalid framerate: %d/0, -> %d/1", fps_n,
988 if (gst_util_fraction_compare (fps_n, fps_d, 1000, 1) > 0) {
989 GST_LOG_OBJECT (ffmpegdec, "excessive framerate: %d/%d, -> 0/1", fps_n,
996 GST_LOG_OBJECT (ffmpegdec, "setting framerate: %d/%d", fps_n, fps_d);
997 out_info->fps_n = fps_n;
998 out_info->fps_d = fps_d;
1000 /* calculate and update par now */
1001 gst_ffmpegviddec_update_par (ffmpegdec, in_info, out_info);
1003 /* Copy stereo/multiview info from upstream if set */
1004 if (GST_VIDEO_INFO_MULTIVIEW_MODE (in_info) != GST_VIDEO_MULTIVIEW_MODE_NONE) {
1005 GST_VIDEO_INFO_MULTIVIEW_MODE (out_info) =
1006 GST_VIDEO_INFO_MULTIVIEW_MODE (in_info);
1007 GST_VIDEO_INFO_MULTIVIEW_FLAGS (out_info) =
1008 GST_VIDEO_INFO_MULTIVIEW_FLAGS (in_info);
1011 if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (ffmpegdec)))
1012 goto negotiate_failed;
1019 GST_ERROR_OBJECT (ffmpegdec,
1020 "decoder requires a video format unsupported by GStreamer");
1025 /* Reset so we try again next time even if force==FALSE */
1026 ffmpegdec->pic_pix_fmt = 0;
1027 ffmpegdec->pic_width = 0;
1028 ffmpegdec->pic_height = 0;
1029 ffmpegdec->pic_par_n = 0;
1030 ffmpegdec->pic_par_d = 0;
1031 ffmpegdec->ctx_ticks = 0;
1032 ffmpegdec->ctx_time_n = 0;
1033 ffmpegdec->ctx_time_d = 0;
1035 GST_ERROR_OBJECT (ffmpegdec, "negotiation failed");
1040 /* perform qos calculations before decoding the next frame.
1042 * Sets the skip_frame flag and if things are really bad, skips to the next
1047 gst_ffmpegviddec_do_qos (GstFFMpegVidDec * ffmpegdec,
1048 GstVideoCodecFrame * frame, gboolean * mode_switch)
1050 GstClockTimeDiff diff;
1051 GstSegmentFlags skip_flags =
1052 GST_VIDEO_DECODER_INPUT_SEGMENT (ffmpegdec).flags;
1054 *mode_switch = FALSE;
1059 if (skip_flags & GST_SEGMENT_FLAG_TRICKMODE_KEY_UNITS) {
1060 ffmpegdec->context->skip_frame = AVDISCARD_NONKEY;
1061 *mode_switch = TRUE;
1062 } else if (skip_flags & GST_SEGMENT_FLAG_TRICKMODE) {
1063 ffmpegdec->context->skip_frame = AVDISCARD_NONREF;
1064 *mode_switch = TRUE;
1068 gst_video_decoder_get_max_decode_time (GST_VIDEO_DECODER (ffmpegdec),
1071 /* if we don't have timing info, then we don't do QoS */
1072 if (G_UNLIKELY (diff == G_MAXINT64))
1075 GST_DEBUG_OBJECT (ffmpegdec, "decoding time %" G_GINT64_FORMAT, diff);
1077 if (*mode_switch == FALSE) {
1078 if (diff > 0 && ffmpegdec->context->skip_frame != AVDISCARD_DEFAULT) {
1079 ffmpegdec->context->skip_frame = AVDISCARD_DEFAULT;
1080 *mode_switch = TRUE;
1081 GST_DEBUG_OBJECT (ffmpegdec, "QOS: normal mode");
1084 else if (diff <= 0 && ffmpegdec->context->skip_frame != AVDISCARD_NONREF) {
1085 ffmpegdec->context->skip_frame = AVDISCARD_NONREF;
1086 *mode_switch = TRUE;
1087 GST_DEBUG_OBJECT (ffmpegdec,
1088 "QOS: hurry up, diff %" G_GINT64_FORMAT " >= 0", diff);
1093 /* get an outbuf buffer with the current picture */
1094 static GstFlowReturn
1095 get_output_buffer (GstFFMpegVidDec * ffmpegdec, GstVideoCodecFrame * frame)
1097 GstFlowReturn ret = GST_FLOW_OK;
1098 AVPicture pic, *outpic;
1099 GstVideoFrame vframe;
1103 GST_LOG_OBJECT (ffmpegdec, "get output buffer");
1105 if (!ffmpegdec->output_state)
1106 goto not_negotiated;
1109 gst_video_decoder_allocate_output_frame (GST_VIDEO_DECODER (ffmpegdec),
1111 if (G_UNLIKELY (ret != GST_FLOW_OK))
1114 /* original ffmpeg code does not handle odd sizes correctly.
1115 * This patched up version does */
1116 /* Fill avpicture */
1117 info = &ffmpegdec->output_state->info;
1118 if (!gst_video_frame_map (&vframe, info, frame->output_buffer,
1119 GST_MAP_READ | GST_MAP_WRITE))
1122 for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
1123 if (c < GST_VIDEO_INFO_N_PLANES (info)) {
1124 pic.data[c] = GST_VIDEO_FRAME_PLANE_DATA (&vframe, c);
1125 pic.linesize[c] = GST_VIDEO_FRAME_PLANE_STRIDE (&vframe, c);
1128 pic.linesize[c] = 0;
1130 GST_LOG_OBJECT (ffmpegdec, "linesize %d, data %p", pic.linesize[c],
1134 outpic = (AVPicture *) ffmpegdec->picture;
1136 av_picture_copy (&pic, outpic, ffmpegdec->context->pix_fmt,
1137 GST_VIDEO_INFO_WIDTH (info), GST_VIDEO_INFO_HEIGHT (info));
1139 gst_video_frame_unmap (&vframe);
1141 ffmpegdec->picture->reordered_opaque = -1;
1148 GST_DEBUG_OBJECT (ffmpegdec, "allocation failed");
1153 GST_DEBUG_OBJECT (ffmpegdec, "not negotiated");
1154 return GST_FLOW_NOT_NEGOTIATED;
1159 gst_avpacket_init (AVPacket * packet, guint8 * data, guint size)
1161 memset (packet, 0, sizeof (AVPacket));
1162 packet->data = data;
1163 packet->size = size;
1166 /* gst_ffmpegviddec_[video|audio]_frame:
1168 * data: pointer to the data to decode
1169 * size: size of data in bytes
1170 * in_timestamp: incoming timestamp.
1171 * in_duration: incoming duration.
1172 * in_offset: incoming offset (frame number).
1175 * Returns: number of bytes used in decoding. The check for successful decode is
1176 * outbuf being non-NULL.
1179 gst_ffmpegviddec_video_frame (GstFFMpegVidDec * ffmpegdec,
1180 guint8 * data, guint size, gint * have_data, GstVideoCodecFrame * frame,
1181 GstFlowReturn * ret)
1184 gboolean mode_switch;
1185 GstVideoCodecFrame *out_frame;
1186 GstFFMpegVidDecVideoFrame *out_dframe;
1191 /* in case we skip frames */
1192 ffmpegdec->picture->pict_type = -1;
1194 /* run QoS code, we don't stop decoding the frame when we are late because
1195 * else we might skip a reference frame */
1196 gst_ffmpegviddec_do_qos (ffmpegdec, frame, &mode_switch);
1198 if (ffmpegdec->is_realvideo && data != NULL) {
1202 /* setup the slice table for realvideo */
1203 if (ffmpegdec->context->slice_offset == NULL)
1204 ffmpegdec->context->slice_offset = g_malloc (sizeof (guint32) * 1000);
1206 slice_count = (*data++) + 1;
1207 ffmpegdec->context->slice_count = slice_count;
1209 for (i = 0; i < slice_count; i++) {
1211 ffmpegdec->context->slice_offset[i] = GST_READ_UINT32_LE (data);
1217 /* save reference to the timing info */
1218 ffmpegdec->context->reordered_opaque = (gint64) frame->system_frame_number;
1219 ffmpegdec->picture->reordered_opaque = (gint64) frame->system_frame_number;
1221 GST_DEBUG_OBJECT (ffmpegdec, "stored opaque values idx %d",
1222 frame->system_frame_number);
1225 /* now decode the frame */
1226 gst_avpacket_init (&packet, data, size);
1228 if (ffmpegdec->palette) {
1231 pal = av_packet_new_side_data (&packet, AV_PKT_DATA_PALETTE,
1233 gst_buffer_extract (ffmpegdec->palette, 0, pal, AVPALETTE_SIZE);
1234 GST_DEBUG_OBJECT (ffmpegdec, "copy pal %p %p", &packet, pal);
1237 /* This might call into get_buffer() from another thread,
1238 * which would cause a deadlock. Release the lock here
1239 * and taking it again later seems safe
1240 * See https://bugzilla.gnome.org/show_bug.cgi?id=726020
1242 GST_VIDEO_DECODER_STREAM_UNLOCK (ffmpegdec);
1243 len = avcodec_decode_video2 (ffmpegdec->context,
1244 ffmpegdec->picture, have_data, &packet);
1245 GST_VIDEO_DECODER_STREAM_LOCK (ffmpegdec);
1247 GST_DEBUG_OBJECT (ffmpegdec, "after decode: len %d, have_data %d",
1250 /* when we are in skip_frame mode, don't complain when ffmpeg returned
1251 * no data because we told it to skip stuff. */
1252 if (len < 0 && (mode_switch || ffmpegdec->context->skip_frame))
1255 /* no data, we're done */
1256 if (len < 0 || *have_data == 0)
1259 /* get the output picture timing info again */
1260 out_dframe = ffmpegdec->picture->opaque;
1261 out_frame = gst_video_codec_frame_ref (out_dframe->frame);
1263 /* also give back a buffer allocated by the frame, if any */
1264 gst_buffer_replace (&out_frame->output_buffer, out_dframe->buffer);
1265 gst_buffer_replace (&out_dframe->buffer, NULL);
1267 GST_DEBUG_OBJECT (ffmpegdec,
1268 "pts %" G_GUINT64_FORMAT " duration %" G_GUINT64_FORMAT,
1269 out_frame->pts, out_frame->duration);
1270 GST_DEBUG_OBJECT (ffmpegdec, "picture: pts %" G_GUINT64_FORMAT,
1271 (guint64) ffmpegdec->picture->pts);
1272 GST_DEBUG_OBJECT (ffmpegdec, "picture: num %d",
1273 ffmpegdec->picture->coded_picture_number);
1274 GST_DEBUG_OBJECT (ffmpegdec, "picture: ref %d",
1275 ffmpegdec->picture->reference);
1276 GST_DEBUG_OBJECT (ffmpegdec, "picture: display %d",
1277 ffmpegdec->picture->display_picture_number);
1278 GST_DEBUG_OBJECT (ffmpegdec, "picture: opaque %p",
1279 ffmpegdec->picture->opaque);
1280 GST_DEBUG_OBJECT (ffmpegdec, "picture: reordered opaque %" G_GUINT64_FORMAT,
1281 (guint64) ffmpegdec->picture->reordered_opaque);
1282 GST_DEBUG_OBJECT (ffmpegdec, "repeat_pict:%d",
1283 ffmpegdec->picture->repeat_pict);
1284 GST_DEBUG_OBJECT (ffmpegdec, "corrupted frame: %d",
1285 ! !(ffmpegdec->picture->flags & AV_FRAME_FLAG_CORRUPT));
1287 if (!gst_ffmpegviddec_negotiate (ffmpegdec, ffmpegdec->context,
1288 ffmpegdec->picture))
1289 goto negotiation_error;
1291 if (G_UNLIKELY (out_frame->output_buffer == NULL))
1292 *ret = get_output_buffer (ffmpegdec, out_frame);
1294 if (G_UNLIKELY (*ret != GST_FLOW_OK))
1297 /* Mark corrupted frames as corrupted */
1298 if (ffmpegdec->picture->flags & AV_FRAME_FLAG_CORRUPT)
1299 GST_BUFFER_FLAG_SET (out_frame->output_buffer, GST_BUFFER_FLAG_CORRUPTED);
1301 if (ffmpegdec->pic_interlaced) {
1302 /* set interlaced flags */
1303 if (ffmpegdec->picture->repeat_pict)
1304 GST_BUFFER_FLAG_SET (out_frame->output_buffer, GST_VIDEO_BUFFER_FLAG_RFF);
1305 if (ffmpegdec->picture->top_field_first)
1306 GST_BUFFER_FLAG_SET (out_frame->output_buffer, GST_VIDEO_BUFFER_FLAG_TFF);
1307 if (ffmpegdec->picture->interlaced_frame)
1308 GST_BUFFER_FLAG_SET (out_frame->output_buffer,
1309 GST_VIDEO_BUFFER_FLAG_INTERLACED);
1313 /* so we decoded this frame, frames preceding it in decoding order
1314 * that still do not have a buffer allocated seem rather useless,
1315 * and can be discarded, due to e.g. misparsed bogus frame
1316 * or non-keyframe in skipped decoding, ...
1317 * In any case, not likely to be seen again, so discard those,
1318 * before they pile up and/or mess with timestamping */
1321 GstVideoDecoder *dec = GST_VIDEO_DECODER (ffmpegdec);
1322 gboolean old = TRUE;
1324 ol = l = gst_video_decoder_get_frames (dec);
1326 GstVideoCodecFrame *tmp = l->data;
1331 if (old && GST_VIDEO_CODEC_FRAME_IS_DECODE_ONLY (tmp)) {
1332 GST_LOG_OBJECT (dec,
1333 "discarding ghost frame %p (#%d) PTS:%" GST_TIME_FORMAT " DTS:%"
1334 GST_TIME_FORMAT, tmp, tmp->system_frame_number,
1335 GST_TIME_ARGS (tmp->pts), GST_TIME_ARGS (tmp->dts));
1336 /* drop extra ref and remove from frame list */
1337 gst_video_decoder_release_frame (dec, tmp);
1339 /* drop extra ref we got */
1340 gst_video_codec_frame_unref (tmp);
1347 av_frame_unref (ffmpegdec->picture);
1349 /* FIXME: Ideally we would remap the buffer read-only now before pushing but
1350 * libav might still have a reference to it!
1354 gst_video_decoder_finish_frame (GST_VIDEO_DECODER (ffmpegdec), out_frame);
1357 GST_DEBUG_OBJECT (ffmpegdec, "return flow %s, len %d",
1358 gst_flow_get_name (*ret), len);
1364 GST_DEBUG_OBJECT (ffmpegdec, "no output buffer");
1365 gst_video_decoder_drop_frame (GST_VIDEO_DECODER (ffmpegdec), out_frame);
1372 if (GST_PAD_IS_FLUSHING (GST_VIDEO_DECODER_SRC_PAD (ffmpegdec))) {
1373 *ret = GST_FLOW_FLUSHING;
1376 GST_WARNING_OBJECT (ffmpegdec, "Error negotiating format");
1377 *ret = GST_FLOW_NOT_NEGOTIATED;
1383 /* gst_ffmpegviddec_frame:
1385 * data: pointer to the data to decode
1386 * size: size of data in bytes
1387 * got_data: 0 if no data was decoded, != 0 otherwise.
1388 * in_time: timestamp of data
1389 * in_duration: duration of data
1390 * ret: GstFlowReturn to return in the chain function
1392 * Decode the given frame and pushes it downstream.
1394 * Returns: Number of bytes used in decoding, -1 on error/failure.
1398 gst_ffmpegviddec_frame (GstFFMpegVidDec * ffmpegdec,
1399 guint8 * data, guint size, gint * have_data, GstVideoCodecFrame * frame,
1400 GstFlowReturn * ret)
1402 GstFFMpegVidDecClass *oclass;
1405 if (G_UNLIKELY (ffmpegdec->context->codec == NULL))
1408 GST_LOG_OBJECT (ffmpegdec, "data:%p, size:%d", data, size);
1411 ffmpegdec->context->frame_number++;
1413 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
1416 gst_ffmpegviddec_video_frame (ffmpegdec, data, size, have_data, frame,
1420 GST_WARNING_OBJECT (ffmpegdec,
1421 "avdec_%s: decoding error (len: %d, have_data: %d)",
1422 oclass->in_plugin->name, len, *have_data);
1430 GST_ERROR_OBJECT (ffmpegdec, "no codec context");
1431 *ret = GST_FLOW_NOT_NEGOTIATED;
1437 gst_ffmpegviddec_drain (GstFFMpegVidDec * ffmpegdec)
1439 GstFFMpegVidDecClass *oclass;
1441 if (!ffmpegdec->opened)
1444 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
1446 if (oclass->in_plugin->capabilities & CODEC_CAP_DELAY) {
1447 gint have_data, len;
1450 GST_LOG_OBJECT (ffmpegdec,
1451 "codec has delay capabilities, calling until ffmpeg has drained everything");
1454 len = gst_ffmpegviddec_frame (ffmpegdec, NULL, 0, &have_data, NULL, &ret);
1455 } while (len >= 0 && have_data == 1 && ret == GST_FLOW_OK);
1456 avcodec_flush_buffers (ffmpegdec->context);
1460 static GstFlowReturn
1461 gst_ffmpegviddec_handle_frame (GstVideoDecoder * decoder,
1462 GstVideoCodecFrame * frame)
1464 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1465 guint8 *data, *bdata;
1466 gint size, len, have_data, bsize;
1468 GstFlowReturn ret = GST_FLOW_OK;
1469 gboolean do_padding;
1471 GST_LOG_OBJECT (ffmpegdec,
1472 "Received new data of size %" G_GSIZE_FORMAT ", dts %" GST_TIME_FORMAT
1473 ", pts:%" GST_TIME_FORMAT ", dur:%" GST_TIME_FORMAT,
1474 gst_buffer_get_size (frame->input_buffer), GST_TIME_ARGS (frame->dts),
1475 GST_TIME_ARGS (frame->pts), GST_TIME_ARGS (frame->duration));
1477 if (!gst_buffer_map (frame->input_buffer, &minfo, GST_MAP_READ)) {
1478 GST_ELEMENT_ERROR (ffmpegdec, STREAM, DECODE, ("Decoding problem"),
1479 ("Failed to map buffer for reading"));
1480 return GST_FLOW_ERROR;
1483 /* treat frame as void until a buffer is requested for it */
1484 GST_VIDEO_CODEC_FRAME_FLAG_SET (frame,
1485 GST_VIDEO_CODEC_FRAME_FLAG_DECODE_ONLY);
1490 if (bsize > 0 && (!GST_MEMORY_IS_ZERO_PADDED (minfo.memory)
1491 || (minfo.maxsize - minfo.size) < FF_INPUT_BUFFER_PADDING_SIZE)) {
1493 if (ffmpegdec->padded_size < bsize + FF_INPUT_BUFFER_PADDING_SIZE) {
1494 ffmpegdec->padded_size = bsize + FF_INPUT_BUFFER_PADDING_SIZE;
1495 ffmpegdec->padded = g_realloc (ffmpegdec->padded, ffmpegdec->padded_size);
1496 GST_LOG_OBJECT (ffmpegdec, "resized padding buffer to %d",
1497 ffmpegdec->padded_size);
1499 GST_CAT_TRACE_OBJECT (GST_CAT_PERFORMANCE, ffmpegdec,
1500 "Copy input to add padding");
1501 memcpy (ffmpegdec->padded, bdata, bsize);
1502 memset (ffmpegdec->padded + bsize, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1504 bdata = ffmpegdec->padded;
1511 guint8 tmp_padding[FF_INPUT_BUFFER_PADDING_SIZE];
1513 /* parse, if at all possible */
1518 /* add temporary padding */
1519 GST_CAT_TRACE_OBJECT (GST_CAT_PERFORMANCE, ffmpegdec,
1520 "Add temporary input padding");
1521 memcpy (tmp_padding, data + size, FF_INPUT_BUFFER_PADDING_SIZE);
1522 memset (data + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1525 /* decode a frame of audio/video now */
1527 gst_ffmpegviddec_frame (ffmpegdec, data, size, &have_data, frame, &ret);
1529 if (ret != GST_FLOW_OK) {
1530 GST_LOG_OBJECT (ffmpegdec, "breaking because of flow ret %s",
1531 gst_flow_get_name (ret));
1532 /* bad flow return, make sure we discard all data and exit */
1538 memcpy (data + size, tmp_padding, FF_INPUT_BUFFER_PADDING_SIZE);
1541 if (len == 0 && have_data == 0) {
1542 /* nothing was decoded, this could be because no data was available or
1543 * because we were skipping frames.
1544 * If we have no context we must exit and wait for more data, we keep the
1546 GST_LOG_OBJECT (ffmpegdec, "Decoding didn't return any data, breaking");
1551 /* a decoding error happened, we must break and try again with next data. */
1552 GST_LOG_OBJECT (ffmpegdec, "Decoding error, breaking");
1557 /* prepare for the next round, for codecs with a context we did this
1558 * already when using the parser. */
1564 GST_LOG_OBJECT (ffmpegdec, "Before (while bsize>0). bsize:%d , bdata:%p",
1566 } while (bsize > 0);
1569 GST_DEBUG_OBJECT (ffmpegdec, "Dropping %d bytes of data", bsize);
1571 gst_buffer_unmap (frame->input_buffer, &minfo);
1572 gst_video_codec_frame_unref (frame);
1579 gst_ffmpegviddec_start (GstVideoDecoder * decoder)
1581 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1582 GstFFMpegVidDecClass *oclass;
1584 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
1586 GST_OBJECT_LOCK (ffmpegdec);
1587 gst_ffmpeg_avcodec_close (ffmpegdec->context);
1588 if (avcodec_get_context_defaults3 (ffmpegdec->context, oclass->in_plugin) < 0) {
1589 GST_DEBUG_OBJECT (ffmpegdec, "Failed to set context defaults");
1590 GST_OBJECT_UNLOCK (ffmpegdec);
1593 ffmpegdec->context->opaque = ffmpegdec;
1594 GST_OBJECT_UNLOCK (ffmpegdec);
1600 gst_ffmpegviddec_stop (GstVideoDecoder * decoder)
1602 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1604 GST_OBJECT_LOCK (ffmpegdec);
1605 gst_ffmpegviddec_close (ffmpegdec, FALSE);
1606 GST_OBJECT_UNLOCK (ffmpegdec);
1607 g_free (ffmpegdec->padded);
1608 ffmpegdec->padded = NULL;
1609 ffmpegdec->padded_size = 0;
1610 if (ffmpegdec->input_state)
1611 gst_video_codec_state_unref (ffmpegdec->input_state);
1612 ffmpegdec->input_state = NULL;
1613 if (ffmpegdec->output_state)
1614 gst_video_codec_state_unref (ffmpegdec->output_state);
1615 ffmpegdec->output_state = NULL;
1617 ffmpegdec->pic_pix_fmt = 0;
1618 ffmpegdec->pic_width = 0;
1619 ffmpegdec->pic_height = 0;
1620 ffmpegdec->pic_par_n = 0;
1621 ffmpegdec->pic_par_d = 0;
1622 ffmpegdec->ctx_ticks = 0;
1623 ffmpegdec->ctx_time_n = 0;
1624 ffmpegdec->ctx_time_d = 0;
1629 static GstFlowReturn
1630 gst_ffmpegviddec_finish (GstVideoDecoder * decoder)
1632 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1634 gst_ffmpegviddec_drain (ffmpegdec);
1640 gst_ffmpegviddec_flush (GstVideoDecoder * decoder)
1642 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1644 if (ffmpegdec->opened)
1645 avcodec_flush_buffers (ffmpegdec->context);
1651 gst_ffmpegviddec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query)
1653 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1654 GstVideoCodecState *state;
1655 GstBufferPool *pool;
1656 guint size, min, max;
1657 GstStructure *config;
1658 gboolean have_videometa, have_alignment, update_pool = FALSE;
1659 GstAllocator *allocator = NULL;
1660 GstAllocationParams params = { 0, 15, 0, 0, };
1662 if (!GST_VIDEO_DECODER_CLASS (parent_class)->decide_allocation (decoder,
1666 state = gst_video_decoder_get_output_state (decoder);
1668 if (gst_query_get_n_allocation_params (query) > 0) {
1669 gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
1670 params.align = MAX (params.align, 15);
1672 gst_query_add_allocation_param (query, allocator, ¶ms);
1675 gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
1677 /* Don't use pool that can't grow, as we don't know how many buffer we'll
1678 * need, otherwise we may stall */
1679 if (max != 0 && max < REQUIRED_POOL_MAX_BUFFERS) {
1680 gst_object_unref (pool);
1681 pool = gst_video_buffer_pool_new ();
1685 /* if there is an allocator, also drop it, as it might be the reason we
1686 * have this limit. Default will be used */
1688 gst_object_unref (allocator);
1693 config = gst_buffer_pool_get_config (pool);
1694 gst_buffer_pool_config_set_params (config, state->caps, size, min, max);
1695 /* we are happy with the default allocator but we would like to have 16 bytes
1696 * aligned and padded memory */
1697 gst_buffer_pool_config_set_allocator (config, allocator, ¶ms);
1700 gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
1702 gst_buffer_pool_config_add_option (config,
1703 GST_BUFFER_POOL_OPTION_VIDEO_META);
1706 gst_buffer_pool_has_option (pool, GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
1708 /* Most cases don't do direct rendering */
1709 ffmpegdec->current_dr = FALSE;
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 */
1780 gst_buffer_pool_set_config (pool, config);
1783 gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
1785 gst_object_unref (pool);
1787 gst_object_unref (allocator);
1788 gst_video_codec_state_unref (state);
1794 gst_ffmpegviddec_propose_allocation (GstVideoDecoder * decoder,
1797 GstAllocationParams params;
1799 gst_allocation_params_init (¶ms);
1800 params.flags = GST_MEMORY_FLAG_ZERO_PADDED;
1802 params.padding = FF_INPUT_BUFFER_PADDING_SIZE;
1803 /* we would like to have some padding so that we don't have to
1804 * memcpy. We don't suggest an allocator. */
1805 gst_query_add_allocation_param (query, NULL, ¶ms);
1807 return GST_VIDEO_DECODER_CLASS (parent_class)->propose_allocation (decoder,
1812 gst_ffmpegviddec_set_property (GObject * object,
1813 guint prop_id, const GValue * value, GParamSpec * pspec)
1815 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) object;
1819 ffmpegdec->lowres = ffmpegdec->context->lowres = g_value_get_enum (value);
1821 case PROP_SKIPFRAME:
1822 ffmpegdec->skip_frame = ffmpegdec->context->skip_frame =
1823 g_value_get_enum (value);
1825 case PROP_DIRECT_RENDERING:
1826 ffmpegdec->direct_rendering = g_value_get_boolean (value);
1829 ffmpegdec->debug_mv = ffmpegdec->context->debug_mv =
1830 g_value_get_boolean (value);
1832 case PROP_MAX_THREADS:
1833 ffmpegdec->max_threads = g_value_get_int (value);
1835 case PROP_OUTPUT_CORRUPT:
1836 ffmpegdec->output_corrupt = g_value_get_boolean (value);
1839 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1845 gst_ffmpegviddec_get_property (GObject * object,
1846 guint prop_id, GValue * value, GParamSpec * pspec)
1848 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) object;
1852 g_value_set_enum (value, ffmpegdec->context->lowres);
1854 case PROP_SKIPFRAME:
1855 g_value_set_enum (value, ffmpegdec->context->skip_frame);
1857 case PROP_DIRECT_RENDERING:
1858 g_value_set_boolean (value, ffmpegdec->direct_rendering);
1861 g_value_set_boolean (value, ffmpegdec->context->debug_mv);
1863 case PROP_MAX_THREADS:
1864 g_value_set_int (value, ffmpegdec->max_threads);
1866 case PROP_OUTPUT_CORRUPT:
1867 g_value_set_boolean (value, ffmpegdec->output_corrupt);
1870 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1876 gst_ffmpegviddec_register (GstPlugin * plugin)
1878 GTypeInfo typeinfo = {
1879 sizeof (GstFFMpegVidDecClass),
1880 (GBaseInitFunc) gst_ffmpegviddec_base_init,
1882 (GClassInitFunc) gst_ffmpegviddec_class_init,
1885 sizeof (GstFFMpegVidDec),
1887 (GInstanceInitFunc) gst_ffmpegviddec_init,
1893 in_plugin = av_codec_next (NULL);
1895 GST_LOG ("Registering decoders");
1901 /* only video decoders */
1902 if (!av_codec_is_decoder (in_plugin)
1903 || in_plugin->type != AVMEDIA_TYPE_VIDEO)
1906 /* no quasi-codecs, please */
1907 if (in_plugin->id == AV_CODEC_ID_RAWVIDEO ||
1908 in_plugin->id == AV_CODEC_ID_V210 ||
1909 in_plugin->id == AV_CODEC_ID_V210X ||
1910 in_plugin->id == AV_CODEC_ID_R210 ||
1911 (in_plugin->id >= AV_CODEC_ID_PCM_S16LE &&
1912 in_plugin->id <= AV_CODEC_ID_PCM_BLURAY)) {
1916 /* No decoders depending on external libraries (we don't build them, but
1917 * people who build against an external ffmpeg might have them.
1918 * We have native gstreamer plugins for all of those libraries anyway. */
1919 if (!strncmp (in_plugin->name, "lib", 3)) {
1921 ("Not using external library decoder %s. Use the gstreamer-native ones instead.",
1926 /* No vdpau plugins until we can figure out how to properly use them
1927 * outside of ffmpeg. */
1928 if (g_str_has_suffix (in_plugin->name, "_vdpau")) {
1930 ("Ignoring VDPAU decoder %s. We can't handle this outside of ffmpeg",
1935 if (g_str_has_suffix (in_plugin->name, "_xvmc")) {
1937 ("Ignoring XVMC decoder %s. We can't handle this outside of ffmpeg",
1942 GST_DEBUG ("Trying plugin %s [%s]", in_plugin->name, in_plugin->long_name);
1944 /* no codecs for which we're GUARANTEED to have better alternatives */
1945 /* MPEG1VIDEO : the mpeg2video decoder is preferred */
1946 /* MP1 : Use MP3 for decoding */
1947 /* MP2 : Use MP3 for decoding */
1948 /* Theora: Use libtheora based theoradec */
1949 if (!strcmp (in_plugin->name, "gif") ||
1950 !strcmp (in_plugin->name, "theora") ||
1951 !strcmp (in_plugin->name, "mpeg1video") ||
1952 strstr (in_plugin->name, "crystalhd") != NULL ||
1953 !strcmp (in_plugin->name, "ass") ||
1954 !strcmp (in_plugin->name, "srt") ||
1955 !strcmp (in_plugin->name, "pgssub") ||
1956 !strcmp (in_plugin->name, "dvdsub") ||
1957 !strcmp (in_plugin->name, "dvbsub")) {
1958 GST_LOG ("Ignoring decoder %s", in_plugin->name);
1962 /* construct the type */
1963 if (!strcmp (in_plugin->name, "hevc")) {
1964 plugin_name = g_strdup ("h265");
1966 plugin_name = g_strdup ((gchar *) in_plugin->name);
1968 g_strdelimit (plugin_name, NULL, '_');
1969 type_name = g_strdup_printf ("avdec_%s", plugin_name);
1970 g_free (plugin_name);
1972 type = g_type_from_name (type_name);
1975 /* create the gtype now */
1977 g_type_register_static (GST_TYPE_VIDEO_DECODER, type_name, &typeinfo,
1979 g_type_set_qdata (type, GST_FFDEC_PARAMS_QDATA, (gpointer) in_plugin);
1982 /* (Ronald) MPEG-4 gets a higher priority because it has been well-
1983 * tested and by far outperforms divxdec/xviddec - so we prefer it.
1984 * msmpeg4v3 same, as it outperforms divxdec for divx3 playback.
1985 * VC1/WMV3 are not working and thus unpreferred for now. */
1986 switch (in_plugin->id) {
1987 case AV_CODEC_ID_MPEG4:
1988 case AV_CODEC_ID_MSMPEG4V3:
1989 case AV_CODEC_ID_H264:
1990 case AV_CODEC_ID_HEVC:
1991 case AV_CODEC_ID_RV10:
1992 case AV_CODEC_ID_RV20:
1993 case AV_CODEC_ID_RV30:
1994 case AV_CODEC_ID_RV40:
1995 rank = GST_RANK_PRIMARY;
1997 /* DVVIDEO: we have a good dv decoder, fast on both ppc as well as x86.
1998 * They say libdv's quality is better though. leave as secondary.
1999 * note: if you change this, see the code in gstdv.c in good/ext/dv.
2001 case AV_CODEC_ID_DVVIDEO:
2002 rank = GST_RANK_SECONDARY;
2005 rank = GST_RANK_MARGINAL;
2008 if (!gst_element_register (plugin, type_name, rank, type)) {
2009 g_warning ("Failed to register %s", type_name);
2017 in_plugin = av_codec_next (in_plugin);
2020 GST_LOG ("Finished Registering decoders");