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>
28 #include <libavutil/stereo3d.h>
31 #include <gst/video/video.h>
32 #include <gst/video/gstvideodecoder.h>
33 #include <gst/video/gstvideometa.h>
34 #include <gst/video/gstvideopool.h>
35 #include <gst/video/video-anc.h>
38 #include "gstavcodecmap.h"
39 #include "gstavutils.h"
40 #include "gstavviddec.h"
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
51 #define DEFAULT_STRIDE_ALIGN 31
52 #define DEFAULT_ALLOC_PARAM { 0, DEFAULT_STRIDE_ALIGN, 0, 0, }
59 PROP_DIRECT_RENDERING,
66 /* A number of function prototypes are given so we can refer to them later. */
67 static void gst_ffmpegviddec_base_init (GstFFMpegVidDecClass * klass);
68 static void gst_ffmpegviddec_class_init (GstFFMpegVidDecClass * klass);
69 static void gst_ffmpegviddec_init (GstFFMpegVidDec * ffmpegdec);
70 static void gst_ffmpegviddec_finalize (GObject * object);
72 static gboolean gst_ffmpegviddec_set_format (GstVideoDecoder * decoder,
73 GstVideoCodecState * state);
74 static GstFlowReturn gst_ffmpegviddec_handle_frame (GstVideoDecoder * decoder,
75 GstVideoCodecFrame * frame);
76 static gboolean gst_ffmpegviddec_start (GstVideoDecoder * decoder);
77 static gboolean gst_ffmpegviddec_stop (GstVideoDecoder * decoder);
78 static gboolean gst_ffmpegviddec_flush (GstVideoDecoder * decoder);
79 static gboolean gst_ffmpegviddec_decide_allocation (GstVideoDecoder * decoder,
81 static gboolean gst_ffmpegviddec_propose_allocation (GstVideoDecoder * decoder,
84 static void gst_ffmpegviddec_set_property (GObject * object,
85 guint prop_id, const GValue * value, GParamSpec * pspec);
86 static void gst_ffmpegviddec_get_property (GObject * object,
87 guint prop_id, GValue * value, GParamSpec * pspec);
89 static gboolean gst_ffmpegviddec_negotiate (GstFFMpegVidDec * ffmpegdec,
90 AVCodecContext * context, AVFrame * picture);
92 /* some sort of bufferpool handling, but different */
93 static int gst_ffmpegviddec_get_buffer2 (AVCodecContext * context,
94 AVFrame * picture, int flags);
96 static GstFlowReturn gst_ffmpegviddec_finish (GstVideoDecoder * decoder);
97 static GstFlowReturn gst_ffmpegviddec_drain (GstVideoDecoder * decoder);
99 static gboolean picture_changed (GstFFMpegVidDec * ffmpegdec,
101 static gboolean context_changed (GstFFMpegVidDec * ffmpegdec,
102 AVCodecContext * context);
104 #define GST_FFDEC_PARAMS_QDATA g_quark_from_static_string("avdec-params")
106 static GstElementClass *parent_class = NULL;
108 #define GST_FFMPEGVIDDEC_TYPE_LOWRES (gst_ffmpegviddec_lowres_get_type())
110 gst_ffmpegviddec_lowres_get_type (void)
112 static GType ffmpegdec_lowres_type = 0;
114 if (!ffmpegdec_lowres_type) {
115 static const GEnumValue ffmpegdec_lowres[] = {
117 {1, "1", "1/2-size"},
118 {2, "2", "1/4-size"},
122 ffmpegdec_lowres_type =
123 g_enum_register_static ("GstLibAVVidDecLowres", ffmpegdec_lowres);
126 return ffmpegdec_lowres_type;
129 #define GST_FFMPEGVIDDEC_TYPE_SKIPFRAME (gst_ffmpegviddec_skipframe_get_type())
131 gst_ffmpegviddec_skipframe_get_type (void)
133 static GType ffmpegdec_skipframe_type = 0;
135 if (!ffmpegdec_skipframe_type) {
136 static const GEnumValue ffmpegdec_skipframe[] = {
137 {0, "0", "Skip nothing"},
138 {1, "1", "Skip B-frames"},
139 {2, "2", "Skip IDCT/Dequantization"},
140 {5, "5", "Skip everything"},
144 ffmpegdec_skipframe_type =
145 g_enum_register_static ("GstLibAVVidDecSkipFrame", ffmpegdec_skipframe);
148 return ffmpegdec_skipframe_type;
152 gst_ffmpegviddec_base_init (GstFFMpegVidDecClass * klass)
154 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
155 GstPadTemplate *sinktempl, *srctempl;
156 GstCaps *sinkcaps, *srccaps;
158 gchar *longname, *description;
161 (AVCodec *) g_type_get_qdata (G_OBJECT_CLASS_TYPE (klass),
162 GST_FFDEC_PARAMS_QDATA);
163 g_assert (in_plugin != NULL);
165 /* construct the element details struct */
166 longname = g_strdup_printf ("libav %s decoder", in_plugin->long_name);
167 description = g_strdup_printf ("libav %s decoder", in_plugin->name);
168 gst_element_class_set_metadata (element_class, longname,
169 "Codec/Decoder/Video", description,
170 "Wim Taymans <wim.taymans@gmail.com>, "
171 "Ronald Bultje <rbultje@ronald.bitfreak.net>, "
172 "Edward Hervey <bilboed@bilboed.com>");
174 g_free (description);
177 sinkcaps = gst_ffmpeg_codecid_to_caps (in_plugin->id, NULL, FALSE);
179 GST_DEBUG ("Couldn't get sink caps for decoder '%s'", in_plugin->name);
180 sinkcaps = gst_caps_new_empty_simple ("unknown/unknown");
182 srccaps = gst_ffmpeg_codectype_to_video_caps (NULL,
183 in_plugin->id, FALSE, in_plugin);
185 GST_DEBUG ("Couldn't get source caps for decoder '%s'", in_plugin->name);
186 srccaps = gst_caps_from_string ("video/x-raw");
190 sinktempl = gst_pad_template_new ("sink", GST_PAD_SINK,
191 GST_PAD_ALWAYS, sinkcaps);
192 srctempl = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, srccaps);
194 gst_element_class_add_pad_template (element_class, srctempl);
195 gst_element_class_add_pad_template (element_class, sinktempl);
197 gst_caps_unref (sinkcaps);
198 gst_caps_unref (srccaps);
200 klass->in_plugin = in_plugin;
204 gst_ffmpegviddec_class_init (GstFFMpegVidDecClass * klass)
206 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
207 GstVideoDecoderClass *viddec_class = GST_VIDEO_DECODER_CLASS (klass);
210 parent_class = g_type_class_peek_parent (klass);
212 gobject_class->finalize = gst_ffmpegviddec_finalize;
214 gobject_class->set_property = gst_ffmpegviddec_set_property;
215 gobject_class->get_property = gst_ffmpegviddec_get_property;
217 g_object_class_install_property (gobject_class, PROP_SKIPFRAME,
218 g_param_spec_enum ("skip-frame", "Skip frames",
219 "Which types of frames to skip during decoding",
220 GST_FFMPEGVIDDEC_TYPE_SKIPFRAME, 0,
221 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
222 g_object_class_install_property (gobject_class, PROP_LOWRES,
223 g_param_spec_enum ("lowres", "Low resolution",
224 "At which resolution to decode images",
225 GST_FFMPEGVIDDEC_TYPE_LOWRES, 0,
226 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
227 g_object_class_install_property (gobject_class, PROP_DIRECT_RENDERING,
228 g_param_spec_boolean ("direct-rendering", "Direct Rendering",
229 "Enable direct rendering", DEFAULT_DIRECT_RENDERING,
230 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
231 g_object_class_install_property (gobject_class, PROP_DEBUG_MV,
232 g_param_spec_boolean ("debug-mv", "Debug motion vectors",
233 "Whether libav should print motion vectors on top of the image",
234 DEFAULT_DEBUG_MV, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
235 g_object_class_install_property (gobject_class, PROP_OUTPUT_CORRUPT,
236 g_param_spec_boolean ("output-corrupt", "Output corrupt buffers",
237 "Whether libav should output frames even if corrupted",
238 DEFAULT_OUTPUT_CORRUPT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
240 caps = klass->in_plugin->capabilities;
241 if (caps & (CODEC_CAP_FRAME_THREADS | CODEC_CAP_SLICE_THREADS)) {
242 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MAX_THREADS,
243 g_param_spec_int ("max-threads", "Maximum decode threads",
244 "Maximum number of worker threads to spawn. (0 = auto)",
245 0, G_MAXINT, DEFAULT_MAX_THREADS,
246 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
249 viddec_class->set_format = gst_ffmpegviddec_set_format;
250 viddec_class->handle_frame = gst_ffmpegviddec_handle_frame;
251 viddec_class->start = gst_ffmpegviddec_start;
252 viddec_class->stop = gst_ffmpegviddec_stop;
253 viddec_class->flush = gst_ffmpegviddec_flush;
254 viddec_class->finish = gst_ffmpegviddec_finish;
255 viddec_class->drain = gst_ffmpegviddec_drain;
256 viddec_class->decide_allocation = gst_ffmpegviddec_decide_allocation;
257 viddec_class->propose_allocation = gst_ffmpegviddec_propose_allocation;
261 gst_ffmpegviddec_init (GstFFMpegVidDec * ffmpegdec)
263 GstFFMpegVidDecClass *klass =
264 (GstFFMpegVidDecClass *) G_OBJECT_GET_CLASS (ffmpegdec);
266 /* some ffmpeg data */
267 ffmpegdec->context = avcodec_alloc_context3 (klass->in_plugin);
268 ffmpegdec->context->opaque = ffmpegdec;
269 ffmpegdec->picture = av_frame_alloc ();
270 ffmpegdec->opened = FALSE;
271 ffmpegdec->skip_frame = ffmpegdec->lowres = 0;
272 ffmpegdec->direct_rendering = DEFAULT_DIRECT_RENDERING;
273 ffmpegdec->debug_mv = DEFAULT_DEBUG_MV;
274 ffmpegdec->max_threads = DEFAULT_MAX_THREADS;
275 ffmpegdec->output_corrupt = DEFAULT_OUTPUT_CORRUPT;
277 GST_PAD_SET_ACCEPT_TEMPLATE (GST_VIDEO_DECODER_SINK_PAD (ffmpegdec));
278 gst_video_decoder_set_use_default_pad_acceptcaps (GST_VIDEO_DECODER_CAST
281 gst_video_decoder_set_needs_format (GST_VIDEO_DECODER (ffmpegdec), TRUE);
285 gst_ffmpegviddec_finalize (GObject * object)
287 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) object;
289 av_frame_free (&ffmpegdec->picture);
291 if (ffmpegdec->context != NULL) {
292 gst_ffmpeg_avcodec_close (ffmpegdec->context);
293 av_free (ffmpegdec->context);
294 ffmpegdec->context = NULL;
297 G_OBJECT_CLASS (parent_class)->finalize (object);
301 gst_ffmpegviddec_context_set_flags (AVCodecContext * context, guint flags,
304 g_return_if_fail (context != NULL);
307 context->flags |= flags;
309 context->flags &= ~flags;
314 gst_ffmpegviddec_close (GstFFMpegVidDec * ffmpegdec, gboolean reset)
316 GstFFMpegVidDecClass *oclass;
319 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
321 GST_LOG_OBJECT (ffmpegdec, "closing ffmpeg codec");
323 gst_caps_replace (&ffmpegdec->last_caps, NULL);
325 gst_ffmpeg_avcodec_close (ffmpegdec->context);
326 ffmpegdec->opened = FALSE;
328 for (i = 0; i < G_N_ELEMENTS (ffmpegdec->stride); i++)
329 ffmpegdec->stride[i] = -1;
331 gst_buffer_replace (&ffmpegdec->palette, NULL);
333 if (ffmpegdec->context->extradata) {
334 av_free (ffmpegdec->context->extradata);
335 ffmpegdec->context->extradata = NULL;
338 if (avcodec_get_context_defaults3 (ffmpegdec->context,
339 oclass->in_plugin) < 0) {
340 GST_DEBUG_OBJECT (ffmpegdec, "Failed to set context defaults");
343 ffmpegdec->context->opaque = ffmpegdec;
350 gst_ffmpegviddec_open (GstFFMpegVidDec * ffmpegdec)
352 GstFFMpegVidDecClass *oclass;
355 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
357 if (gst_ffmpeg_avcodec_open (ffmpegdec->context, oclass->in_plugin) < 0)
360 for (i = 0; i < G_N_ELEMENTS (ffmpegdec->stride); i++)
361 ffmpegdec->stride[i] = -1;
363 ffmpegdec->opened = TRUE;
365 GST_LOG_OBJECT (ffmpegdec, "Opened libav codec %s, id %d",
366 oclass->in_plugin->name, oclass->in_plugin->id);
368 gst_ffmpegviddec_context_set_flags (ffmpegdec->context,
369 CODEC_FLAG_OUTPUT_CORRUPT, ffmpegdec->output_corrupt);
376 gst_ffmpegviddec_close (ffmpegdec, TRUE);
377 GST_DEBUG_OBJECT (ffmpegdec, "avdec_%s: Failed to open libav codec",
378 oclass->in_plugin->name);
384 gst_ffmpegviddec_get_palette (GstFFMpegVidDec * ffmpegdec,
385 GstVideoCodecState * state)
387 GstStructure *str = gst_caps_get_structure (state->caps, 0);
388 const GValue *palette_v;
391 /* do we have a palette? */
392 if ((palette_v = gst_structure_get_value (str, "palette_data"))) {
393 palette = gst_value_get_buffer (palette_v);
394 GST_DEBUG ("got palette data %p", palette);
395 if (gst_buffer_get_size (palette) >= AVPALETTE_SIZE) {
396 gst_buffer_replace (&ffmpegdec->palette, palette);
403 gst_ffmpegviddec_set_format (GstVideoDecoder * decoder,
404 GstVideoCodecState * state)
406 GstFFMpegVidDec *ffmpegdec;
407 GstFFMpegVidDecClass *oclass;
408 GstClockTime latency = GST_CLOCK_TIME_NONE;
409 gboolean ret = FALSE;
411 ffmpegdec = (GstFFMpegVidDec *) decoder;
412 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
414 if (ffmpegdec->last_caps != NULL &&
415 gst_caps_is_equal (ffmpegdec->last_caps, state->caps)) {
419 GST_DEBUG_OBJECT (ffmpegdec, "setcaps called");
421 GST_OBJECT_LOCK (ffmpegdec);
422 /* stupid check for VC1 */
423 if ((oclass->in_plugin->id == AV_CODEC_ID_WMV3) ||
424 (oclass->in_plugin->id == AV_CODEC_ID_VC1))
425 oclass->in_plugin->id = gst_ffmpeg_caps_to_codecid (state->caps, NULL);
427 /* close old session */
428 if (ffmpegdec->opened) {
429 GST_OBJECT_UNLOCK (ffmpegdec);
430 gst_ffmpegviddec_finish (decoder);
431 GST_OBJECT_LOCK (ffmpegdec);
432 if (!gst_ffmpegviddec_close (ffmpegdec, TRUE)) {
433 GST_OBJECT_UNLOCK (ffmpegdec);
436 ffmpegdec->pic_pix_fmt = 0;
437 ffmpegdec->pic_width = 0;
438 ffmpegdec->pic_height = 0;
439 ffmpegdec->pic_par_n = 0;
440 ffmpegdec->pic_par_d = 0;
441 ffmpegdec->pic_interlaced = 0;
442 ffmpegdec->pic_field_order = 0;
443 ffmpegdec->pic_field_order_changed = FALSE;
444 ffmpegdec->ctx_ticks = 0;
445 ffmpegdec->ctx_time_n = 0;
446 ffmpegdec->ctx_time_d = 0;
447 ffmpegdec->cur_multiview_mode = GST_VIDEO_MULTIVIEW_MODE_NONE;
448 ffmpegdec->cur_multiview_flags = GST_VIDEO_MULTIVIEW_FLAGS_NONE;
451 gst_caps_replace (&ffmpegdec->last_caps, state->caps);
453 /* set buffer functions */
454 ffmpegdec->context->get_buffer2 = gst_ffmpegviddec_get_buffer2;
455 ffmpegdec->context->draw_horiz_band = NULL;
457 /* reset coded_width/_height to prevent it being reused from last time when
458 * the codec is opened again, causing a mismatch and possible
459 * segfault/corruption. (Common scenario when renegotiating caps) */
460 ffmpegdec->context->coded_width = 0;
461 ffmpegdec->context->coded_height = 0;
463 GST_LOG_OBJECT (ffmpegdec, "size %dx%d", ffmpegdec->context->width,
464 ffmpegdec->context->height);
466 /* FIXME : Create a method that takes GstVideoCodecState instead */
467 /* get size and so */
468 gst_ffmpeg_caps_with_codecid (oclass->in_plugin->id,
469 oclass->in_plugin->type, state->caps, ffmpegdec->context);
471 GST_LOG_OBJECT (ffmpegdec, "size after %dx%d", ffmpegdec->context->width,
472 ffmpegdec->context->height);
474 gst_ffmpegviddec_get_palette (ffmpegdec, state);
476 if (!ffmpegdec->context->time_base.den || !ffmpegdec->context->time_base.num) {
477 GST_DEBUG_OBJECT (ffmpegdec, "forcing 25/1 framerate");
478 ffmpegdec->context->time_base.num = 1;
479 ffmpegdec->context->time_base.den = 25;
482 /* workaround encoder bugs */
483 ffmpegdec->context->workaround_bugs |= FF_BUG_AUTODETECT;
484 ffmpegdec->context->err_recognition = 1;
487 ffmpegdec->context->lowres = ffmpegdec->lowres;
488 ffmpegdec->context->skip_frame = ffmpegdec->skip_frame;
490 /* ffmpeg can draw motion vectors on top of the image (not every decoder
492 ffmpegdec->context->debug_mv = ffmpegdec->debug_mv;
498 if (ffmpegdec->max_threads == 0) {
499 if (!(oclass->in_plugin->capabilities & CODEC_CAP_AUTO_THREADS))
500 ffmpegdec->context->thread_count = gst_ffmpeg_auto_max_threads ();
502 ffmpegdec->context->thread_count = 0;
504 ffmpegdec->context->thread_count = ffmpegdec->max_threads;
506 query = gst_query_new_latency ();
508 /* Check if upstream is live. If it isn't we can enable frame based
509 * threading, which is adding latency */
510 if (gst_pad_peer_query (GST_VIDEO_DECODER_SINK_PAD (ffmpegdec), query)) {
511 gst_query_parse_latency (query, &is_live, NULL, NULL);
513 gst_query_unref (query);
516 ffmpegdec->context->thread_type = FF_THREAD_SLICE;
518 ffmpegdec->context->thread_type = FF_THREAD_SLICE | FF_THREAD_FRAME;
521 /* open codec - we don't select an output pix_fmt yet,
522 * simply because we don't know! We only get it
523 * during playback... */
524 if (!gst_ffmpegviddec_open (ffmpegdec))
527 if (ffmpegdec->input_state)
528 gst_video_codec_state_unref (ffmpegdec->input_state);
529 ffmpegdec->input_state = gst_video_codec_state_ref (state);
531 if (ffmpegdec->input_state->info.fps_n) {
532 GstVideoInfo *info = &ffmpegdec->input_state->info;
533 latency = gst_util_uint64_scale_ceil (
534 (ffmpegdec->context->has_b_frames) * GST_SECOND, info->fps_d,
541 GST_OBJECT_UNLOCK (ffmpegdec);
543 if (GST_CLOCK_TIME_IS_VALID (latency))
544 gst_video_decoder_set_latency (decoder, latency, latency);
551 GST_DEBUG_OBJECT (ffmpegdec, "Failed to open");
558 GstFFMpegVidDec *ffmpegdec;
559 GstVideoCodecFrame *frame;
561 GstVideoFrame vframe;
563 AVBufferRef *avbuffer;
564 } GstFFMpegVidDecVideoFrame;
566 static GstFFMpegVidDecVideoFrame *
567 gst_ffmpegviddec_video_frame_new (GstFFMpegVidDec * ffmpegdec,
568 GstVideoCodecFrame * frame)
570 GstFFMpegVidDecVideoFrame *dframe;
572 dframe = g_slice_new0 (GstFFMpegVidDecVideoFrame);
573 dframe->ffmpegdec = ffmpegdec;
574 dframe->frame = frame;
576 GST_DEBUG_OBJECT (ffmpegdec, "new video frame %p", dframe);
582 gst_ffmpegviddec_video_frame_free (GstFFMpegVidDec * ffmpegdec,
583 GstFFMpegVidDecVideoFrame * frame)
585 GST_DEBUG_OBJECT (ffmpegdec, "free video frame %p", frame);
588 gst_video_frame_unmap (&frame->vframe);
589 gst_video_decoder_release_frame (GST_VIDEO_DECODER (ffmpegdec), frame->frame);
590 gst_buffer_replace (&frame->buffer, NULL);
591 if (frame->avbuffer) {
592 av_buffer_unref (&frame->avbuffer);
594 g_slice_free (GstFFMpegVidDecVideoFrame, frame);
598 dummy_free_buffer (void *opaque, uint8_t * data)
600 GstFFMpegVidDecVideoFrame *frame = opaque;
602 gst_ffmpegviddec_video_frame_free (frame->ffmpegdec, frame);
605 /* This function prepares the pool configuration for direct rendering. To use
606 * this method, the codec should support direct rendering and the pool should
607 * support video meta and video alignment */
609 gst_ffmpegvideodec_prepare_dr_pool (GstFFMpegVidDec * ffmpegdec,
610 GstBufferPool * pool, GstVideoInfo * info, GstStructure * config)
612 GstAllocationParams params;
613 GstVideoAlignment align;
614 GstAllocator *allocator = NULL;
616 gint linesize_align[4];
621 width = GST_VIDEO_INFO_WIDTH (info);
622 height = GST_VIDEO_INFO_HEIGHT (info);
624 /* let ffmpeg find the alignment and padding */
625 avcodec_align_dimensions2 (ffmpegdec->context, &width, &height,
628 if (ffmpegdec->context->flags & CODEC_FLAG_EMU_EDGE)
631 edge = avcodec_get_edge_width ();
633 /* increase the size for the padding */
637 align.padding_top = edge;
638 align.padding_left = edge;
639 align.padding_right = width - GST_VIDEO_INFO_WIDTH (info) - edge;
640 align.padding_bottom = height - GST_VIDEO_INFO_HEIGHT (info) - edge;
642 /* add extra padding to match libav buffer allocation sizes */
643 align.padding_bottom++;
645 gst_buffer_pool_config_get_allocator (config, &allocator, ¶ms);
647 max_align = DEFAULT_STRIDE_ALIGN;
648 max_align |= params.align;
650 for (i = 0; i < GST_VIDEO_MAX_PLANES; i++) {
651 if (linesize_align[i] > 0)
652 max_align |= linesize_align[i] - 1;
655 for (i = 0; i < GST_VIDEO_MAX_PLANES; i++)
656 align.stride_align[i] = max_align;
658 params.align = max_align;
660 gst_buffer_pool_config_set_allocator (config, allocator, ¶ms);
662 GST_DEBUG_OBJECT (ffmpegdec, "aligned dimension %dx%d -> %dx%d "
663 "padding t:%u l:%u r:%u b:%u, stride_align %d:%d:%d:%d",
664 GST_VIDEO_INFO_WIDTH (info),
665 GST_VIDEO_INFO_HEIGHT (info), width, height, align.padding_top,
666 align.padding_left, align.padding_right, align.padding_bottom,
667 align.stride_align[0], align.stride_align[1], align.stride_align[2],
668 align.stride_align[3]);
670 gst_buffer_pool_config_add_option (config,
671 GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
672 gst_buffer_pool_config_set_video_alignment (config, &align);
676 gst_ffmpegviddec_ensure_internal_pool (GstFFMpegVidDec * ffmpegdec,
679 GstAllocationParams params = DEFAULT_ALLOC_PARAM;
681 GstVideoFormat format;
683 GstStructure *config;
686 if (ffmpegdec->internal_pool != NULL &&
687 ffmpegdec->pool_width == picture->width &&
688 ffmpegdec->pool_height == picture->height &&
689 ffmpegdec->pool_format == picture->format)
692 GST_DEBUG_OBJECT (ffmpegdec, "Updating internal pool (%i, %i)",
693 picture->width, picture->height);
695 format = gst_ffmpeg_pixfmt_to_videoformat (picture->format);
696 gst_video_info_set_format (&info, format, picture->width, picture->height);
698 for (i = 0; i < G_N_ELEMENTS (ffmpegdec->stride); i++)
699 ffmpegdec->stride[i] = -1;
701 if (ffmpegdec->internal_pool)
702 gst_object_unref (ffmpegdec->internal_pool);
704 ffmpegdec->internal_pool = gst_video_buffer_pool_new ();
705 config = gst_buffer_pool_get_config (ffmpegdec->internal_pool);
707 caps = gst_video_info_to_caps (&info);
708 gst_buffer_pool_config_set_params (config, caps, info.size, 2, 0);
709 gst_buffer_pool_config_set_allocator (config, NULL, ¶ms);
710 gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
712 gst_ffmpegvideodec_prepare_dr_pool (ffmpegdec,
713 ffmpegdec->internal_pool, &info, config);
714 /* generic video pool never fails */
715 gst_buffer_pool_set_config (ffmpegdec->internal_pool, config);
716 gst_caps_unref (caps);
718 gst_buffer_pool_set_active (ffmpegdec->internal_pool, TRUE);
720 /* Remember pool size so we can detect changes */
721 ffmpegdec->pool_width = picture->width;
722 ffmpegdec->pool_height = picture->height;
723 ffmpegdec->pool_format = picture->format;
724 ffmpegdec->pool_info = info;
728 gst_ffmpegviddec_can_direct_render (GstFFMpegVidDec * ffmpegdec)
730 GstFFMpegVidDecClass *oclass;
732 if (!ffmpegdec->direct_rendering)
735 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
736 return ((oclass->in_plugin->capabilities & CODEC_CAP_DR1) == CODEC_CAP_DR1);
739 /* called when ffmpeg wants us to allocate a buffer to write the decoded frame
740 * into. We try to give it memory from our pool */
742 gst_ffmpegviddec_get_buffer2 (AVCodecContext * context, AVFrame * picture,
745 GstVideoCodecFrame *frame;
746 GstFFMpegVidDecVideoFrame *dframe;
747 GstFFMpegVidDec *ffmpegdec;
751 ffmpegdec = (GstFFMpegVidDec *) context->opaque;
753 GST_DEBUG_OBJECT (ffmpegdec, "getting buffer picture %p", picture);
755 /* apply the last info we have seen to this picture, when we get the
756 * picture back from ffmpeg we can use this to correctly timestamp the output
758 GST_DEBUG_OBJECT (ffmpegdec, "opaque value SN %d",
759 (gint32) picture->reordered_opaque);
762 gst_video_decoder_get_frame (GST_VIDEO_DECODER (ffmpegdec),
763 picture->reordered_opaque);
764 if (G_UNLIKELY (frame == NULL))
767 /* now it has a buffer allocated, so it is real and will also
769 GST_VIDEO_CODEC_FRAME_FLAG_UNSET (frame,
770 GST_VIDEO_CODEC_FRAME_FLAG_DECODE_ONLY);
772 if (G_UNLIKELY (frame->output_buffer != NULL))
773 goto duplicate_frame;
775 /* GstFFMpegVidDecVideoFrame receives the frame ref */
776 if (picture->opaque) {
777 dframe = picture->opaque;
778 dframe->frame = frame;
780 picture->opaque = dframe =
781 gst_ffmpegviddec_video_frame_new (ffmpegdec, frame);
784 GST_DEBUG_OBJECT (ffmpegdec, "storing opaque %p", dframe);
786 if (!gst_ffmpegviddec_can_direct_render (ffmpegdec))
789 gst_ffmpegviddec_ensure_internal_pool (ffmpegdec, picture);
791 ret = gst_buffer_pool_acquire_buffer (ffmpegdec->internal_pool,
792 &frame->output_buffer, NULL);
793 if (ret != GST_FLOW_OK)
796 /* piggy-backed alloc'ed on the frame,
797 * and there was much rejoicing and we are grateful.
798 * Now take away buffer from frame, we will give it back later when decoded.
799 * This allows multiple request for a buffer per frame; unusual but possible. */
800 gst_buffer_replace (&dframe->buffer, frame->output_buffer);
801 gst_buffer_replace (&frame->output_buffer, NULL);
804 if (!gst_video_frame_map (&dframe->vframe, &ffmpegdec->pool_info,
805 dframe->buffer, GST_MAP_READWRITE))
807 dframe->mapped = TRUE;
809 for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
810 if (c < GST_VIDEO_INFO_N_PLANES (&ffmpegdec->pool_info)) {
811 picture->data[c] = GST_VIDEO_FRAME_PLANE_DATA (&dframe->vframe, c);
812 picture->linesize[c] = GST_VIDEO_FRAME_PLANE_STRIDE (&dframe->vframe, c);
814 if (ffmpegdec->stride[c] == -1)
815 ffmpegdec->stride[c] = picture->linesize[c];
817 /* libav does not allow stride changes, decide allocation should check
818 * before replacing the internal pool with a downstream pool.
819 * https://bugzilla.gnome.org/show_bug.cgi?id=704769
820 * https://bugzilla.libav.org/show_bug.cgi?id=556
822 g_assert (picture->linesize[c] == ffmpegdec->stride[c]);
824 picture->data[c] = NULL;
825 picture->linesize[c] = 0;
827 GST_LOG_OBJECT (ffmpegdec, "linesize %d, data %p", picture->linesize[c],
831 picture->buf[0] = av_buffer_create (NULL, 0, dummy_free_buffer, dframe, 0);
833 GST_LOG_OBJECT (ffmpegdec, "returned frame %p", dframe->buffer);
840 int ret = avcodec_default_get_buffer2 (context, picture, flags);
842 GST_LOG_OBJECT (ffmpegdec, "direct rendering disabled, fallback alloc");
844 for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
845 ffmpegdec->stride[c] = picture->linesize[c];
847 /* Wrap our buffer around the default one to be able to have a callback
848 * when our data can be freed. Just putting our data into the first free
849 * buffer might not work if there are too many allocated already
851 if (picture->buf[0]) {
852 dframe->avbuffer = picture->buf[0];
854 av_buffer_create (picture->buf[0]->data, picture->buf[0]->size,
855 dummy_free_buffer, dframe, 0);
858 av_buffer_create (NULL, 0, dummy_free_buffer, dframe, 0);
865 GST_ELEMENT_ERROR (ffmpegdec, RESOURCE, FAILED,
866 ("Unable to allocate memory"),
867 ("The downstream pool failed to allocated buffer."));
872 GST_ELEMENT_ERROR (ffmpegdec, RESOURCE, OPEN_READ_WRITE,
873 ("Cannot access memory for read and write operation."),
874 ("The video memory allocated from downstream pool could not mapped for"
880 GST_WARNING_OBJECT (ffmpegdec, "already alloc'ed output buffer for frame");
881 gst_video_codec_frame_unref (frame);
886 GST_WARNING_OBJECT (ffmpegdec, "Couldn't get codec frame !");
892 picture_changed (GstFFMpegVidDec * ffmpegdec, AVFrame * picture)
894 gint pic_field_order = 0;
896 if (picture->interlaced_frame) {
897 if (picture->repeat_pict)
898 pic_field_order |= GST_VIDEO_BUFFER_FLAG_RFF;
899 if (picture->top_field_first)
900 pic_field_order |= GST_VIDEO_BUFFER_FLAG_TFF;
903 return !(ffmpegdec->pic_width == picture->width
904 && ffmpegdec->pic_height == picture->height
905 && ffmpegdec->pic_pix_fmt == picture->format
906 && ffmpegdec->pic_par_n == picture->sample_aspect_ratio.num
907 && ffmpegdec->pic_par_d == picture->sample_aspect_ratio.den
908 && ffmpegdec->pic_interlaced == picture->interlaced_frame
909 && ffmpegdec->pic_field_order == pic_field_order
910 && ffmpegdec->cur_multiview_mode == ffmpegdec->picture_multiview_mode
911 && ffmpegdec->cur_multiview_flags == ffmpegdec->picture_multiview_flags);
915 context_changed (GstFFMpegVidDec * ffmpegdec, AVCodecContext * context)
917 return !(ffmpegdec->ctx_ticks == context->ticks_per_frame
918 && ffmpegdec->ctx_time_n == context->time_base.num
919 && ffmpegdec->ctx_time_d == context->time_base.den);
923 update_video_context (GstFFMpegVidDec * ffmpegdec, AVCodecContext * context,
926 gint pic_field_order = 0;
928 if (picture->interlaced_frame) {
929 if (picture->repeat_pict)
930 pic_field_order |= GST_VIDEO_BUFFER_FLAG_RFF;
931 if (picture->top_field_first)
932 pic_field_order |= GST_VIDEO_BUFFER_FLAG_TFF;
935 if (!picture_changed (ffmpegdec, picture)
936 && !context_changed (ffmpegdec, context))
939 GST_DEBUG_OBJECT (ffmpegdec,
940 "Renegotiating video from %dx%d@ %d:%d PAR %d/%d fps pixfmt %d to %dx%d@ %d:%d PAR %d/%d fps pixfmt %d",
941 ffmpegdec->pic_width, ffmpegdec->pic_height,
942 ffmpegdec->pic_par_n, ffmpegdec->pic_par_d,
943 ffmpegdec->ctx_time_n, ffmpegdec->ctx_time_d,
944 ffmpegdec->pic_pix_fmt,
945 picture->width, picture->height,
946 picture->sample_aspect_ratio.num,
947 picture->sample_aspect_ratio.den,
948 context->time_base.num, context->time_base.den, picture->format);
950 ffmpegdec->pic_pix_fmt = picture->format;
951 ffmpegdec->pic_width = picture->width;
952 ffmpegdec->pic_height = picture->height;
953 ffmpegdec->pic_par_n = picture->sample_aspect_ratio.num;
954 ffmpegdec->pic_par_d = picture->sample_aspect_ratio.den;
955 ffmpegdec->cur_multiview_mode = ffmpegdec->picture_multiview_mode;
956 ffmpegdec->cur_multiview_flags = ffmpegdec->picture_multiview_flags;
958 /* Remember if we have interlaced content and the field order changed
959 * at least once. If that happens, we must be interlace-mode=mixed
961 if (ffmpegdec->pic_field_order_changed ||
962 (ffmpegdec->pic_field_order != pic_field_order &&
963 ffmpegdec->pic_interlaced))
964 ffmpegdec->pic_field_order_changed = TRUE;
966 ffmpegdec->pic_field_order = pic_field_order;
967 ffmpegdec->pic_interlaced = picture->interlaced_frame;
969 if (!ffmpegdec->pic_interlaced)
970 ffmpegdec->pic_field_order_changed = FALSE;
972 ffmpegdec->ctx_ticks = context->ticks_per_frame;
973 ffmpegdec->ctx_time_n = context->time_base.num;
974 ffmpegdec->ctx_time_d = context->time_base.den;
980 gst_ffmpegviddec_update_par (GstFFMpegVidDec * ffmpegdec,
981 GstVideoInfo * in_info, GstVideoInfo * out_info)
983 gboolean demuxer_par_set = FALSE;
984 gboolean decoder_par_set = FALSE;
985 gint demuxer_num = 1, demuxer_denom = 1;
986 gint decoder_num = 1, decoder_denom = 1;
988 if (in_info->par_n && in_info->par_d) {
989 demuxer_num = in_info->par_n;
990 demuxer_denom = in_info->par_d;
991 demuxer_par_set = TRUE;
992 GST_DEBUG_OBJECT (ffmpegdec, "Demuxer PAR: %d:%d", demuxer_num,
996 if (ffmpegdec->pic_par_n && ffmpegdec->pic_par_d) {
997 decoder_num = ffmpegdec->pic_par_n;
998 decoder_denom = ffmpegdec->pic_par_d;
999 decoder_par_set = TRUE;
1000 GST_DEBUG_OBJECT (ffmpegdec, "Decoder PAR: %d:%d", decoder_num,
1004 if (!demuxer_par_set && !decoder_par_set)
1007 if (demuxer_par_set && !decoder_par_set)
1008 goto use_demuxer_par;
1010 if (decoder_par_set && !demuxer_par_set)
1011 goto use_decoder_par;
1013 /* Both the demuxer and the decoder provide a PAR. If one of
1014 * the two PARs is 1:1 and the other one is not, use the one
1015 * that is not 1:1. */
1016 if (demuxer_num == demuxer_denom && decoder_num != decoder_denom)
1017 goto use_decoder_par;
1019 if (decoder_num == decoder_denom && demuxer_num != demuxer_denom)
1020 goto use_demuxer_par;
1022 /* Both PARs are non-1:1, so use the PAR provided by the demuxer */
1023 goto use_demuxer_par;
1027 GST_DEBUG_OBJECT (ffmpegdec,
1028 "Setting decoder provided pixel-aspect-ratio of %u:%u", decoder_num,
1030 out_info->par_n = decoder_num;
1031 out_info->par_d = decoder_denom;
1036 GST_DEBUG_OBJECT (ffmpegdec,
1037 "Setting demuxer provided pixel-aspect-ratio of %u:%u", demuxer_num,
1039 out_info->par_n = demuxer_num;
1040 out_info->par_d = demuxer_denom;
1045 GST_DEBUG_OBJECT (ffmpegdec,
1046 "Neither demuxer nor codec provide a pixel-aspect-ratio");
1047 out_info->par_n = 1;
1048 out_info->par_d = 1;
1053 static GstVideoMultiviewMode
1054 stereo_av_to_gst (enum AVStereo3DType type)
1057 case AV_STEREO3D_SIDEBYSIDE:
1058 return GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE;
1059 case AV_STEREO3D_TOPBOTTOM:
1060 return GST_VIDEO_MULTIVIEW_MODE_TOP_BOTTOM;
1061 case AV_STEREO3D_FRAMESEQUENCE:
1062 return GST_VIDEO_MULTIVIEW_MODE_FRAME_BY_FRAME;
1063 case AV_STEREO3D_CHECKERBOARD:
1064 return GST_VIDEO_MULTIVIEW_MODE_CHECKERBOARD;
1065 case AV_STEREO3D_SIDEBYSIDE_QUINCUNX:
1066 return GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE_QUINCUNX;
1067 case AV_STEREO3D_LINES:
1068 return GST_VIDEO_MULTIVIEW_MODE_ROW_INTERLEAVED;
1069 case AV_STEREO3D_COLUMNS:
1070 return GST_VIDEO_MULTIVIEW_MODE_COLUMN_INTERLEAVED;
1075 return GST_VIDEO_MULTIVIEW_MODE_NONE;
1079 gst_ffmpegviddec_negotiate (GstFFMpegVidDec * ffmpegdec,
1080 AVCodecContext * context, AVFrame * picture)
1083 GstVideoInfo *in_info, *out_info;
1084 GstVideoCodecState *output_state;
1086 GstClockTime latency;
1089 if (!update_video_context (ffmpegdec, context, picture))
1092 fmt = gst_ffmpeg_pixfmt_to_videoformat (ffmpegdec->pic_pix_fmt);
1093 if (G_UNLIKELY (fmt == GST_VIDEO_FORMAT_UNKNOWN))
1094 goto unknown_format;
1097 gst_video_decoder_set_output_state (GST_VIDEO_DECODER (ffmpegdec), fmt,
1098 ffmpegdec->pic_width, ffmpegdec->pic_height, ffmpegdec->input_state);
1099 if (ffmpegdec->output_state)
1100 gst_video_codec_state_unref (ffmpegdec->output_state);
1101 ffmpegdec->output_state = output_state;
1103 in_info = &ffmpegdec->input_state->info;
1104 out_info = &ffmpegdec->output_state->info;
1106 /* set the interlaced flag */
1107 in_s = gst_caps_get_structure (ffmpegdec->input_state->caps, 0);
1109 if (!gst_structure_has_field (in_s, "interlace-mode")) {
1110 if (ffmpegdec->pic_interlaced) {
1111 if (ffmpegdec->pic_field_order_changed ||
1112 (ffmpegdec->pic_field_order & GST_VIDEO_BUFFER_FLAG_RFF)) {
1113 out_info->interlace_mode = GST_VIDEO_INTERLACE_MODE_MIXED;
1115 out_info->interlace_mode = GST_VIDEO_INTERLACE_MODE_INTERLEAVED;
1116 if ((ffmpegdec->pic_field_order & GST_VIDEO_BUFFER_FLAG_TFF))
1117 GST_VIDEO_INFO_FIELD_ORDER (out_info) =
1118 GST_VIDEO_FIELD_ORDER_TOP_FIELD_FIRST;
1120 GST_VIDEO_INFO_FIELD_ORDER (out_info) =
1121 GST_VIDEO_FIELD_ORDER_BOTTOM_FIELD_FIRST;
1124 out_info->interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
1128 if (!gst_structure_has_field (in_s, "chroma-site")) {
1129 switch (context->chroma_sample_location) {
1130 case AVCHROMA_LOC_LEFT:
1131 out_info->chroma_site = GST_VIDEO_CHROMA_SITE_MPEG2;
1133 case AVCHROMA_LOC_CENTER:
1134 out_info->chroma_site = GST_VIDEO_CHROMA_SITE_JPEG;
1136 case AVCHROMA_LOC_TOPLEFT:
1137 out_info->chroma_site = GST_VIDEO_CHROMA_SITE_DV;
1139 case AVCHROMA_LOC_TOP:
1140 out_info->chroma_site = GST_VIDEO_CHROMA_SITE_V_COSITED;
1147 if (!gst_structure_has_field (in_s, "colorimetry")
1148 || in_info->colorimetry.primaries == GST_VIDEO_COLOR_PRIMARIES_UNKNOWN) {
1149 switch (context->color_primaries) {
1150 case AVCOL_PRI_BT709:
1151 out_info->colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_BT709;
1153 case AVCOL_PRI_BT470M:
1154 out_info->colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_BT470M;
1156 case AVCOL_PRI_BT470BG:
1157 out_info->colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_BT470BG;
1159 case AVCOL_PRI_SMPTE170M:
1160 out_info->colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_SMPTE170M;
1162 case AVCOL_PRI_SMPTE240M:
1163 out_info->colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_SMPTE240M;
1165 case AVCOL_PRI_FILM:
1166 out_info->colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_FILM;
1168 case AVCOL_PRI_BT2020:
1169 out_info->colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_BT2020;
1176 if (!gst_structure_has_field (in_s, "colorimetry")
1177 || in_info->colorimetry.transfer == GST_VIDEO_TRANSFER_UNKNOWN) {
1178 switch (context->color_trc) {
1179 case AVCOL_TRC_BT2020_10:
1180 case AVCOL_TRC_BT709:
1181 case AVCOL_TRC_SMPTE170M:
1182 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_BT709;
1184 case AVCOL_TRC_GAMMA22:
1185 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_GAMMA22;
1187 case AVCOL_TRC_GAMMA28:
1188 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_GAMMA28;
1190 case AVCOL_TRC_SMPTE240M:
1191 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_SMPTE240M;
1193 case AVCOL_TRC_LINEAR:
1194 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_GAMMA10;
1197 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_LOG100;
1199 case AVCOL_TRC_LOG_SQRT:
1200 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_LOG316;
1202 case AVCOL_TRC_BT2020_12:
1203 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_BT2020_12;
1210 if (!gst_structure_has_field (in_s, "colorimetry")
1211 || in_info->colorimetry.matrix == GST_VIDEO_COLOR_MATRIX_UNKNOWN) {
1212 switch (context->colorspace) {
1214 out_info->colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_RGB;
1216 case AVCOL_SPC_BT709:
1217 out_info->colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_BT709;
1220 out_info->colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_FCC;
1222 case AVCOL_SPC_BT470BG:
1223 case AVCOL_SPC_SMPTE170M:
1224 out_info->colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_BT601;
1226 case AVCOL_SPC_SMPTE240M:
1227 out_info->colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_SMPTE240M;
1229 case AVCOL_SPC_BT2020_NCL:
1230 out_info->colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_BT2020;
1237 if (!gst_structure_has_field (in_s, "colorimetry")
1238 || in_info->colorimetry.range == GST_VIDEO_COLOR_RANGE_UNKNOWN) {
1239 if (context->color_range == AVCOL_RANGE_JPEG) {
1240 out_info->colorimetry.range = GST_VIDEO_COLOR_RANGE_0_255;
1242 out_info->colorimetry.range = GST_VIDEO_COLOR_RANGE_16_235;
1246 /* try to find a good framerate */
1247 if ((in_info->fps_d && in_info->fps_n) ||
1248 GST_VIDEO_INFO_FLAG_IS_SET (in_info, GST_VIDEO_FLAG_VARIABLE_FPS)) {
1249 /* take framerate from input when it was specified (#313970) */
1250 fps_n = in_info->fps_n;
1251 fps_d = in_info->fps_d;
1253 fps_n = ffmpegdec->ctx_time_d / ffmpegdec->ctx_ticks;
1254 fps_d = ffmpegdec->ctx_time_n;
1257 GST_LOG_OBJECT (ffmpegdec, "invalid framerate: %d/0, -> %d/1", fps_n,
1261 if (gst_util_fraction_compare (fps_n, fps_d, 1000, 1) > 0) {
1262 GST_LOG_OBJECT (ffmpegdec, "excessive framerate: %d/%d, -> 0/1", fps_n,
1269 GST_LOG_OBJECT (ffmpegdec, "setting framerate: %d/%d", fps_n, fps_d);
1270 out_info->fps_n = fps_n;
1271 out_info->fps_d = fps_d;
1273 /* calculate and update par now */
1274 gst_ffmpegviddec_update_par (ffmpegdec, in_info, out_info);
1276 GST_VIDEO_INFO_MULTIVIEW_MODE (out_info) = ffmpegdec->cur_multiview_mode;
1277 GST_VIDEO_INFO_MULTIVIEW_FLAGS (out_info) = ffmpegdec->cur_multiview_flags;
1279 if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (ffmpegdec)))
1280 goto negotiate_failed;
1282 /* The decoder is configured, we now know the true latency */
1285 gst_util_uint64_scale_ceil (ffmpegdec->context->has_b_frames *
1286 GST_SECOND, fps_d, fps_n);
1287 gst_video_decoder_set_latency (GST_VIDEO_DECODER (ffmpegdec), latency,
1296 GST_ERROR_OBJECT (ffmpegdec,
1297 "decoder requires a video format unsupported by GStreamer");
1302 /* Reset so we try again next time even if force==FALSE */
1303 ffmpegdec->pic_pix_fmt = 0;
1304 ffmpegdec->pic_width = 0;
1305 ffmpegdec->pic_height = 0;
1306 ffmpegdec->pic_par_n = 0;
1307 ffmpegdec->pic_par_d = 0;
1308 ffmpegdec->pic_interlaced = 0;
1309 ffmpegdec->pic_field_order = 0;
1310 ffmpegdec->pic_field_order_changed = FALSE;
1311 ffmpegdec->ctx_ticks = 0;
1312 ffmpegdec->ctx_time_n = 0;
1313 ffmpegdec->ctx_time_d = 0;
1315 GST_ERROR_OBJECT (ffmpegdec, "negotiation failed");
1320 /* perform qos calculations before decoding the next frame.
1322 * Sets the skip_frame flag and if things are really bad, skips to the next
1327 gst_ffmpegviddec_do_qos (GstFFMpegVidDec * ffmpegdec,
1328 GstVideoCodecFrame * frame, gboolean * mode_switch)
1330 GstClockTimeDiff diff;
1331 GstSegmentFlags skip_flags =
1332 GST_VIDEO_DECODER_INPUT_SEGMENT (ffmpegdec).flags;
1334 *mode_switch = FALSE;
1339 if (skip_flags & GST_SEGMENT_FLAG_TRICKMODE_KEY_UNITS) {
1340 ffmpegdec->context->skip_frame = AVDISCARD_NONKEY;
1341 *mode_switch = TRUE;
1342 } else if (skip_flags & GST_SEGMENT_FLAG_TRICKMODE) {
1343 ffmpegdec->context->skip_frame = AVDISCARD_NONREF;
1344 *mode_switch = TRUE;
1347 if (*mode_switch == TRUE) {
1348 /* We've already switched mode, we can return straight away
1349 * without any further calculation */
1354 gst_video_decoder_get_max_decode_time (GST_VIDEO_DECODER (ffmpegdec),
1357 /* if we don't have timing info, then we don't do QoS */
1358 if (G_UNLIKELY (diff == G_MAXINT64)) {
1359 /* Ensure the skipping strategy is the default one */
1360 ffmpegdec->context->skip_frame = ffmpegdec->skip_frame;
1364 GST_DEBUG_OBJECT (ffmpegdec, "decoding time %" G_GINT64_FORMAT, diff);
1366 if (diff > 0 && ffmpegdec->context->skip_frame != AVDISCARD_DEFAULT) {
1367 ffmpegdec->context->skip_frame = AVDISCARD_DEFAULT;
1368 *mode_switch = TRUE;
1369 GST_DEBUG_OBJECT (ffmpegdec, "QOS: normal mode");
1372 else if (diff <= 0 && ffmpegdec->context->skip_frame != AVDISCARD_NONREF) {
1373 ffmpegdec->context->skip_frame = AVDISCARD_NONREF;
1374 *mode_switch = TRUE;
1375 GST_DEBUG_OBJECT (ffmpegdec,
1376 "QOS: hurry up, diff %" G_GINT64_FORMAT " >= 0", diff);
1380 /* get an outbuf buffer with the current picture */
1381 static GstFlowReturn
1382 get_output_buffer (GstFFMpegVidDec * ffmpegdec, GstVideoCodecFrame * frame)
1384 GstFlowReturn ret = GST_FLOW_OK;
1385 AVFrame pic, *outpic;
1386 GstVideoFrame vframe;
1390 GST_LOG_OBJECT (ffmpegdec, "get output buffer");
1392 if (!ffmpegdec->output_state)
1393 goto not_negotiated;
1396 gst_video_decoder_allocate_output_frame (GST_VIDEO_DECODER (ffmpegdec),
1398 if (G_UNLIKELY (ret != GST_FLOW_OK))
1401 /* original ffmpeg code does not handle odd sizes correctly.
1402 * This patched up version does */
1403 /* Fill avpicture */
1404 info = &ffmpegdec->output_state->info;
1405 if (!gst_video_frame_map (&vframe, info, frame->output_buffer,
1406 GST_MAP_READ | GST_MAP_WRITE))
1409 memset (&pic, 0, sizeof (pic));
1410 pic.format = ffmpegdec->pic_pix_fmt;
1411 pic.width = GST_VIDEO_FRAME_WIDTH (&vframe);
1412 pic.height = GST_VIDEO_FRAME_HEIGHT (&vframe);
1413 for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
1414 if (c < GST_VIDEO_INFO_N_PLANES (info)) {
1415 pic.data[c] = GST_VIDEO_FRAME_PLANE_DATA (&vframe, c);
1416 pic.linesize[c] = GST_VIDEO_FRAME_PLANE_STRIDE (&vframe, c);
1417 GST_LOG_OBJECT (ffmpegdec, "[%i] linesize %d, data %p", c,
1418 pic.linesize[c], pic.data[c]);
1421 pic.linesize[c] = 0;
1425 outpic = ffmpegdec->picture;
1427 if (av_frame_copy (&pic, outpic) != 0) {
1428 GST_ERROR_OBJECT (ffmpegdec, "Failed to copy output frame");
1429 ret = GST_FLOW_ERROR;
1432 gst_video_frame_unmap (&vframe);
1434 ffmpegdec->picture->reordered_opaque = -1;
1441 GST_ELEMENT_ERROR (ffmpegdec, RESOURCE, FAILED,
1442 ("Unable to allocate memory"),
1443 ("The downstream pool failed to allocated buffer."));
1448 GST_ELEMENT_ERROR (ffmpegdec, RESOURCE, OPEN_READ_WRITE,
1449 ("Cannot access memory for read and write operation."),
1450 ("The video memory allocated from downstream pool could not mapped for"
1451 "read and write."));
1456 GST_DEBUG_OBJECT (ffmpegdec, "not negotiated");
1457 return GST_FLOW_NOT_NEGOTIATED;
1462 gst_avpacket_init (AVPacket * packet, guint8 * data, guint size)
1464 memset (packet, 0, sizeof (AVPacket));
1465 packet->data = data;
1466 packet->size = size;
1469 /* gst_ffmpegviddec_[video|audio]_frame:
1471 * data: pointer to the data to decode
1472 * size: size of data in bytes
1473 * in_timestamp: incoming timestamp.
1474 * in_duration: incoming duration.
1475 * in_offset: incoming offset (frame number).
1478 * Returns: number of bytes used in decoding. The check for successful decode is
1479 * outbuf being non-NULL.
1482 gst_ffmpegviddec_video_frame (GstFFMpegVidDec * ffmpegdec,
1483 guint8 * data, guint size, gint * have_data, GstVideoCodecFrame * frame,
1484 GstFlowReturn * ret)
1487 gboolean mode_switch;
1488 GstVideoCodecFrame *out_frame;
1489 GstFFMpegVidDecVideoFrame *out_dframe;
1491 GstBufferPool *pool;
1495 /* in case we skip frames */
1496 ffmpegdec->picture->pict_type = -1;
1498 /* run QoS code, we don't stop decoding the frame when we are late because
1499 * else we might skip a reference frame */
1500 gst_ffmpegviddec_do_qos (ffmpegdec, frame, &mode_switch);
1503 /* save reference to the timing info */
1504 ffmpegdec->context->reordered_opaque = (gint64) frame->system_frame_number;
1505 ffmpegdec->picture->reordered_opaque = (gint64) frame->system_frame_number;
1507 GST_DEBUG_OBJECT (ffmpegdec, "stored opaque values idx %d",
1508 frame->system_frame_number);
1511 /* now decode the frame */
1512 gst_avpacket_init (&packet, data, size);
1514 if (ffmpegdec->palette) {
1517 pal = av_packet_new_side_data (&packet, AV_PKT_DATA_PALETTE,
1519 gst_buffer_extract (ffmpegdec->palette, 0, pal, AVPALETTE_SIZE);
1520 GST_DEBUG_OBJECT (ffmpegdec, "copy pal %p %p", &packet, pal);
1523 /* This might call into get_buffer() from another thread,
1524 * which would cause a deadlock. Release the lock here
1525 * and taking it again later seems safe
1526 * See https://bugzilla.gnome.org/show_bug.cgi?id=726020
1528 GST_VIDEO_DECODER_STREAM_UNLOCK (ffmpegdec);
1529 len = avcodec_decode_video2 (ffmpegdec->context,
1530 ffmpegdec->picture, have_data, &packet);
1531 GST_VIDEO_DECODER_STREAM_LOCK (ffmpegdec);
1533 GST_DEBUG_OBJECT (ffmpegdec, "after decode: len %d, have_data %d",
1536 /* when we are in skip_frame mode, don't complain when ffmpeg returned
1537 * no data because we told it to skip stuff. */
1538 if (len < 0 && (mode_switch || ffmpegdec->context->skip_frame))
1541 /* no data, we're done */
1542 if (len < 0 || *have_data == 0)
1545 /* get the output picture timing info again */
1546 out_dframe = ffmpegdec->picture->opaque;
1547 out_frame = gst_video_codec_frame_ref (out_dframe->frame);
1549 /* also give back a buffer allocated by the frame, if any */
1550 gst_buffer_replace (&out_frame->output_buffer, out_dframe->buffer);
1551 gst_buffer_replace (&out_dframe->buffer, NULL);
1553 /* Extract auxilliary info not stored in the main AVframe */
1555 GstVideoInfo *in_info = &ffmpegdec->input_state->info;
1556 /* Take multiview mode from upstream if present */
1557 ffmpegdec->picture_multiview_mode = GST_VIDEO_INFO_MULTIVIEW_MODE (in_info);
1558 ffmpegdec->picture_multiview_flags =
1559 GST_VIDEO_INFO_MULTIVIEW_FLAGS (in_info);
1561 /* Otherwise, see if there's info in the frame */
1562 if (ffmpegdec->picture_multiview_mode == GST_VIDEO_MULTIVIEW_MODE_NONE) {
1563 AVFrameSideData *side_data =
1564 av_frame_get_side_data (ffmpegdec->picture, AV_FRAME_DATA_STEREO3D);
1566 AVStereo3D *stereo = (AVStereo3D *) side_data->data;
1567 ffmpegdec->picture_multiview_mode = stereo_av_to_gst (stereo->type);
1568 if (stereo->flags & AV_STEREO3D_FLAG_INVERT) {
1569 ffmpegdec->picture_multiview_flags =
1570 GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_VIEW_FIRST;
1572 ffmpegdec->picture_multiview_flags = GST_VIDEO_MULTIVIEW_FLAGS_NONE;
1578 GST_DEBUG_OBJECT (ffmpegdec,
1579 "pts %" G_GUINT64_FORMAT " duration %" G_GUINT64_FORMAT,
1580 out_frame->pts, out_frame->duration);
1581 GST_DEBUG_OBJECT (ffmpegdec, "picture: pts %" G_GUINT64_FORMAT,
1582 (guint64) ffmpegdec->picture->pts);
1583 GST_DEBUG_OBJECT (ffmpegdec, "picture: num %d",
1584 ffmpegdec->picture->coded_picture_number);
1585 GST_DEBUG_OBJECT (ffmpegdec, "picture: display %d",
1586 ffmpegdec->picture->display_picture_number);
1587 GST_DEBUG_OBJECT (ffmpegdec, "picture: opaque %p",
1588 ffmpegdec->picture->opaque);
1589 GST_DEBUG_OBJECT (ffmpegdec, "picture: reordered opaque %" G_GUINT64_FORMAT,
1590 (guint64) ffmpegdec->picture->reordered_opaque);
1591 GST_DEBUG_OBJECT (ffmpegdec, "repeat_pict:%d",
1592 ffmpegdec->picture->repeat_pict);
1593 GST_DEBUG_OBJECT (ffmpegdec, "corrupted frame: %d",
1594 ! !(ffmpegdec->picture->flags & AV_FRAME_FLAG_CORRUPT));
1596 if (!gst_ffmpegviddec_negotiate (ffmpegdec, ffmpegdec->context,
1597 ffmpegdec->picture))
1598 goto negotiation_error;
1600 pool = gst_video_decoder_get_buffer_pool (GST_VIDEO_DECODER (ffmpegdec));
1601 if (G_UNLIKELY (out_frame->output_buffer == NULL)) {
1602 *ret = get_output_buffer (ffmpegdec, out_frame);
1603 } else if (G_UNLIKELY (out_frame->output_buffer->pool != pool)) {
1604 GstBuffer *tmp = out_frame->output_buffer;
1605 out_frame->output_buffer = NULL;
1606 *ret = get_output_buffer (ffmpegdec, out_frame);
1607 gst_buffer_unref (tmp);
1609 #ifndef G_DISABLE_ASSERT
1611 GstVideoMeta *vmeta = gst_buffer_get_video_meta (out_frame->output_buffer);
1613 GstVideoInfo *info = &ffmpegdec->output_state->info;
1614 g_assert (vmeta->width == GST_VIDEO_INFO_WIDTH (info));
1615 g_assert (vmeta->height == GST_VIDEO_INFO_HEIGHT (info));
1619 gst_object_unref (pool);
1621 if (G_UNLIKELY (*ret != GST_FLOW_OK))
1624 /* Mark corrupted frames as corrupted */
1625 if (ffmpegdec->picture->flags & AV_FRAME_FLAG_CORRUPT)
1626 GST_BUFFER_FLAG_SET (out_frame->output_buffer, GST_BUFFER_FLAG_CORRUPTED);
1628 if (ffmpegdec->pic_interlaced) {
1629 /* set interlaced flags */
1630 if (ffmpegdec->picture->repeat_pict)
1631 GST_BUFFER_FLAG_SET (out_frame->output_buffer, GST_VIDEO_BUFFER_FLAG_RFF);
1632 if (ffmpegdec->picture->top_field_first)
1633 GST_BUFFER_FLAG_SET (out_frame->output_buffer, GST_VIDEO_BUFFER_FLAG_TFF);
1634 if (ffmpegdec->picture->interlaced_frame)
1635 GST_BUFFER_FLAG_SET (out_frame->output_buffer,
1636 GST_VIDEO_BUFFER_FLAG_INTERLACED);
1640 AVFrameSideData *side_data =
1641 av_frame_get_side_data (ffmpegdec->picture, AV_FRAME_DATA_A53_CC);
1643 GST_LOG_OBJECT (ffmpegdec, "Found CC of size %d", side_data->size);
1644 GST_MEMDUMP ("A53 CC", side_data->data, side_data->size);
1645 out_frame->output_buffer =
1646 gst_buffer_make_writable (out_frame->output_buffer);
1647 gst_buffer_add_video_caption_meta (out_frame->output_buffer,
1648 GST_VIDEO_CAPTION_TYPE_CEA708_RAW, side_data->data, side_data->size);
1653 /* so we decoded this frame, frames preceding it in decoding order
1654 * that still do not have a buffer allocated seem rather useless,
1655 * and can be discarded, due to e.g. misparsed bogus frame
1656 * or non-keyframe in skipped decoding, ...
1657 * In any case, not likely to be seen again, so discard those,
1658 * before they pile up and/or mess with timestamping */
1661 GstVideoDecoder *dec = GST_VIDEO_DECODER (ffmpegdec);
1662 gboolean old = TRUE;
1664 ol = l = gst_video_decoder_get_frames (dec);
1666 GstVideoCodecFrame *tmp = l->data;
1671 if (old && GST_VIDEO_CODEC_FRAME_IS_DECODE_ONLY (tmp)) {
1672 GST_LOG_OBJECT (dec,
1673 "discarding ghost frame %p (#%d) PTS:%" GST_TIME_FORMAT " DTS:%"
1674 GST_TIME_FORMAT, tmp, tmp->system_frame_number,
1675 GST_TIME_ARGS (tmp->pts), GST_TIME_ARGS (tmp->dts));
1676 /* drop extra ref and remove from frame list */
1677 gst_video_decoder_release_frame (dec, tmp);
1679 /* drop extra ref we got */
1680 gst_video_codec_frame_unref (tmp);
1687 av_frame_unref (ffmpegdec->picture);
1689 /* FIXME: Ideally we would remap the buffer read-only now before pushing but
1690 * libav might still have a reference to it!
1693 gst_video_decoder_finish_frame (GST_VIDEO_DECODER (ffmpegdec), out_frame);
1696 GST_DEBUG_OBJECT (ffmpegdec, "return flow %s, len %d",
1697 gst_flow_get_name (*ret), len);
1703 GST_DEBUG_OBJECT (ffmpegdec, "no output buffer");
1704 gst_video_decoder_drop_frame (GST_VIDEO_DECODER (ffmpegdec), out_frame);
1711 if (GST_PAD_IS_FLUSHING (GST_VIDEO_DECODER_SRC_PAD (ffmpegdec))) {
1712 *ret = GST_FLOW_FLUSHING;
1715 GST_WARNING_OBJECT (ffmpegdec, "Error negotiating format");
1716 *ret = GST_FLOW_NOT_NEGOTIATED;
1722 /* gst_ffmpegviddec_frame:
1724 * data: pointer to the data to decode
1725 * size: size of data in bytes
1726 * got_data: 0 if no data was decoded, != 0 otherwise.
1727 * in_time: timestamp of data
1728 * in_duration: duration of data
1729 * ret: GstFlowReturn to return in the chain function
1731 * Decode the given frame and pushes it downstream.
1733 * Returns: Number of bytes used in decoding, -1 on error/failure.
1737 gst_ffmpegviddec_frame (GstFFMpegVidDec * ffmpegdec,
1738 guint8 * data, guint size, gint * have_data, GstVideoCodecFrame * frame,
1739 GstFlowReturn * ret)
1741 GstFFMpegVidDecClass *oclass;
1744 if (G_UNLIKELY (ffmpegdec->context->codec == NULL))
1747 GST_LOG_OBJECT (ffmpegdec, "data:%p, size:%d", data, size);
1750 ffmpegdec->context->frame_number++;
1752 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
1755 gst_ffmpegviddec_video_frame (ffmpegdec, data, size, have_data, frame,
1759 GST_WARNING_OBJECT (ffmpegdec,
1760 "avdec_%s: decoding error (len: %d, have_data: %d)",
1761 oclass->in_plugin->name, len, *have_data);
1769 GST_ERROR_OBJECT (ffmpegdec, "no codec context");
1770 *ret = GST_FLOW_NOT_NEGOTIATED;
1775 static GstFlowReturn
1776 gst_ffmpegviddec_drain (GstVideoDecoder * decoder)
1778 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1779 GstFFMpegVidDecClass *oclass;
1781 if (!ffmpegdec->opened)
1784 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
1786 if (oclass->in_plugin->capabilities & CODEC_CAP_DELAY) {
1787 gint have_data, len;
1790 GST_LOG_OBJECT (ffmpegdec,
1791 "codec has delay capabilities, calling until ffmpeg has drained everything");
1794 len = gst_ffmpegviddec_frame (ffmpegdec, NULL, 0, &have_data, NULL, &ret);
1795 } while (len >= 0 && have_data == 1 && ret == GST_FLOW_OK);
1801 static GstFlowReturn
1802 gst_ffmpegviddec_handle_frame (GstVideoDecoder * decoder,
1803 GstVideoCodecFrame * frame)
1805 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1806 guint8 *data, *bdata;
1807 gint size, len, have_data, bsize;
1809 GstFlowReturn ret = GST_FLOW_OK;
1810 gboolean do_padding;
1812 GST_LOG_OBJECT (ffmpegdec,
1813 "Received new data of size %" G_GSIZE_FORMAT ", dts %" GST_TIME_FORMAT
1814 ", pts:%" GST_TIME_FORMAT ", dur:%" GST_TIME_FORMAT,
1815 gst_buffer_get_size (frame->input_buffer), GST_TIME_ARGS (frame->dts),
1816 GST_TIME_ARGS (frame->pts), GST_TIME_ARGS (frame->duration));
1818 if (!gst_buffer_map (frame->input_buffer, &minfo, GST_MAP_READ)) {
1819 GST_ELEMENT_ERROR (ffmpegdec, STREAM, DECODE, ("Decoding problem"),
1820 ("Failed to map buffer for reading"));
1821 return GST_FLOW_ERROR;
1824 /* treat frame as void until a buffer is requested for it */
1825 GST_VIDEO_CODEC_FRAME_FLAG_SET (frame,
1826 GST_VIDEO_CODEC_FRAME_FLAG_DECODE_ONLY);
1831 if (bsize > 0 && (!GST_MEMORY_IS_ZERO_PADDED (minfo.memory)
1832 || (minfo.maxsize - minfo.size) < FF_INPUT_BUFFER_PADDING_SIZE)) {
1834 if (ffmpegdec->padded_size < bsize + FF_INPUT_BUFFER_PADDING_SIZE) {
1835 ffmpegdec->padded_size = bsize + FF_INPUT_BUFFER_PADDING_SIZE;
1836 ffmpegdec->padded = g_realloc (ffmpegdec->padded, ffmpegdec->padded_size);
1837 GST_LOG_OBJECT (ffmpegdec, "resized padding buffer to %d",
1838 ffmpegdec->padded_size);
1840 GST_CAT_TRACE_OBJECT (CAT_PERFORMANCE, ffmpegdec,
1841 "Copy input to add padding");
1842 memcpy (ffmpegdec->padded, bdata, bsize);
1843 memset (ffmpegdec->padded + bsize, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1845 bdata = ffmpegdec->padded;
1852 guint8 tmp_padding[FF_INPUT_BUFFER_PADDING_SIZE];
1854 /* parse, if at all possible */
1859 /* add temporary padding */
1860 GST_CAT_TRACE_OBJECT (CAT_PERFORMANCE, ffmpegdec,
1861 "Add temporary input padding");
1862 memcpy (tmp_padding, data + size, FF_INPUT_BUFFER_PADDING_SIZE);
1863 memset (data + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1866 /* decode a frame of audio/video now */
1868 gst_ffmpegviddec_frame (ffmpegdec, data, size, &have_data, frame, &ret);
1870 if (ret != GST_FLOW_OK) {
1871 GST_LOG_OBJECT (ffmpegdec, "breaking because of flow ret %s",
1872 gst_flow_get_name (ret));
1873 /* bad flow return, make sure we discard all data and exit */
1879 memcpy (data + size, tmp_padding, FF_INPUT_BUFFER_PADDING_SIZE);
1882 if (len == 0 && have_data == 0) {
1883 /* nothing was decoded, this could be because no data was available or
1884 * because we were skipping frames.
1885 * If we have no context we must exit and wait for more data, we keep the
1887 GST_LOG_OBJECT (ffmpegdec, "Decoding didn't return any data, breaking");
1892 /* a decoding error happened, we must break and try again with next data. */
1893 GST_LOG_OBJECT (ffmpegdec, "Decoding error, breaking");
1898 /* prepare for the next round, for codecs with a context we did this
1899 * already when using the parser. */
1905 GST_LOG_OBJECT (ffmpegdec, "Before (while bsize>0). bsize:%d , bdata:%p",
1907 } while (bsize > 0);
1910 GST_DEBUG_OBJECT (ffmpegdec, "Dropping %d bytes of data", bsize);
1912 gst_buffer_unmap (frame->input_buffer, &minfo);
1913 gst_video_codec_frame_unref (frame);
1919 gst_ffmpegviddec_start (GstVideoDecoder * decoder)
1921 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1922 GstFFMpegVidDecClass *oclass;
1924 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
1926 GST_OBJECT_LOCK (ffmpegdec);
1927 gst_ffmpeg_avcodec_close (ffmpegdec->context);
1928 if (avcodec_get_context_defaults3 (ffmpegdec->context, oclass->in_plugin) < 0) {
1929 GST_DEBUG_OBJECT (ffmpegdec, "Failed to set context defaults");
1930 GST_OBJECT_UNLOCK (ffmpegdec);
1933 ffmpegdec->context->opaque = ffmpegdec;
1934 GST_OBJECT_UNLOCK (ffmpegdec);
1940 gst_ffmpegviddec_stop (GstVideoDecoder * decoder)
1942 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1944 GST_OBJECT_LOCK (ffmpegdec);
1945 gst_ffmpegviddec_close (ffmpegdec, FALSE);
1946 GST_OBJECT_UNLOCK (ffmpegdec);
1947 g_free (ffmpegdec->padded);
1948 ffmpegdec->padded = NULL;
1949 ffmpegdec->padded_size = 0;
1950 if (ffmpegdec->input_state)
1951 gst_video_codec_state_unref (ffmpegdec->input_state);
1952 ffmpegdec->input_state = NULL;
1953 if (ffmpegdec->output_state)
1954 gst_video_codec_state_unref (ffmpegdec->output_state);
1955 ffmpegdec->output_state = NULL;
1957 if (ffmpegdec->internal_pool)
1958 gst_object_unref (ffmpegdec->internal_pool);
1959 ffmpegdec->internal_pool = NULL;
1961 ffmpegdec->pic_pix_fmt = 0;
1962 ffmpegdec->pic_width = 0;
1963 ffmpegdec->pic_height = 0;
1964 ffmpegdec->pic_par_n = 0;
1965 ffmpegdec->pic_par_d = 0;
1966 ffmpegdec->pic_interlaced = 0;
1967 ffmpegdec->pic_field_order = 0;
1968 ffmpegdec->pic_field_order_changed = FALSE;
1969 ffmpegdec->ctx_ticks = 0;
1970 ffmpegdec->ctx_time_n = 0;
1971 ffmpegdec->ctx_time_d = 0;
1973 ffmpegdec->pool_width = 0;
1974 ffmpegdec->pool_height = 0;
1975 ffmpegdec->pool_format = 0;
1980 static GstFlowReturn
1981 gst_ffmpegviddec_finish (GstVideoDecoder * decoder)
1983 gst_ffmpegviddec_drain (decoder);
1984 /* note that finish can and should clean up more drastically,
1985 * but drain is also invoked on e.g. packet loss in GAP handling */
1986 gst_ffmpegviddec_flush (decoder);
1992 gst_ffmpegviddec_flush (GstVideoDecoder * decoder)
1994 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1996 if (ffmpegdec->opened) {
1997 GST_LOG_OBJECT (decoder, "flushing buffers");
1998 avcodec_flush_buffers (ffmpegdec->context);
2005 gst_ffmpegviddec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query)
2007 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
2008 GstVideoCodecState *state;
2009 GstBufferPool *pool;
2010 guint size, min, max;
2011 GstStructure *config;
2012 gboolean have_pool, have_videometa, have_alignment, update_pool = FALSE;
2013 GstAllocator *allocator = NULL;
2014 GstAllocationParams params = DEFAULT_ALLOC_PARAM;
2016 have_pool = (gst_query_get_n_allocation_pools (query) != 0);
2018 if (!GST_VIDEO_DECODER_CLASS (parent_class)->decide_allocation (decoder,
2022 state = gst_video_decoder_get_output_state (decoder);
2024 if (gst_query_get_n_allocation_params (query) > 0) {
2025 gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
2026 params.align = MAX (params.align, DEFAULT_STRIDE_ALIGN);
2028 gst_query_add_allocation_param (query, allocator, ¶ms);
2031 gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
2033 /* Don't use pool that can't grow, as we don't know how many buffer we'll
2034 * need, otherwise we may stall */
2035 if (max != 0 && max < REQUIRED_POOL_MAX_BUFFERS) {
2036 gst_object_unref (pool);
2037 pool = gst_video_buffer_pool_new ();
2042 /* if there is an allocator, also drop it, as it might be the reason we
2043 * have this limit. Default will be used */
2045 gst_object_unref (allocator);
2050 config = gst_buffer_pool_get_config (pool);
2051 gst_buffer_pool_config_set_params (config, state->caps, size, min, max);
2052 gst_buffer_pool_config_set_allocator (config, allocator, ¶ms);
2055 gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
2058 gst_buffer_pool_config_add_option (config,
2059 GST_BUFFER_POOL_OPTION_VIDEO_META);
2062 gst_buffer_pool_has_option (pool, GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
2064 /* If we have videometa, we never have to copy */
2065 if (have_videometa && have_pool && have_alignment &&
2066 gst_ffmpegviddec_can_direct_render (ffmpegdec)) {
2067 GstStructure *config_copy = gst_structure_copy (config);
2069 gst_ffmpegvideodec_prepare_dr_pool (ffmpegdec, pool, &state->info,
2072 /* FIXME validate and retry */
2073 if (gst_buffer_pool_set_config (pool, config_copy)) {
2077 gst_buffer_pool_set_active (pool, TRUE);
2078 ret = gst_buffer_pool_acquire_buffer (pool, &tmp, NULL);
2079 if (ret == GST_FLOW_OK) {
2080 GstVideoMeta *vmeta = gst_buffer_get_video_meta (tmp);
2081 gboolean same_stride = TRUE;
2084 for (i = 0; i < vmeta->n_planes; i++) {
2085 if (vmeta->stride[i] != ffmpegdec->stride[i]) {
2086 same_stride = FALSE;
2091 gst_buffer_unref (tmp);
2094 if (ffmpegdec->internal_pool)
2095 gst_object_unref (ffmpegdec->internal_pool);
2096 ffmpegdec->internal_pool = gst_object_ref (pool);
2097 ffmpegdec->pool_info = state->info;
2098 gst_structure_free (config);
2105 if (have_videometa && ffmpegdec->internal_pool
2106 && ffmpegdec->pool_width == state->info.width
2107 && ffmpegdec->pool_height == state->info.height) {
2109 gst_object_unref (pool);
2110 pool = gst_object_ref (ffmpegdec->internal_pool);
2111 gst_structure_free (config);
2116 if (!gst_buffer_pool_set_config (pool, config)) {
2117 gboolean working_pool = FALSE;
2118 config = gst_buffer_pool_get_config (pool);
2120 if (gst_buffer_pool_config_validate_params (config, state->caps, size, min,
2122 working_pool = gst_buffer_pool_set_config (pool, config);
2124 gst_structure_free (config);
2127 if (!working_pool) {
2128 gst_object_unref (pool);
2129 pool = gst_video_buffer_pool_new ();
2130 config = gst_buffer_pool_get_config (pool);
2131 gst_buffer_pool_config_set_params (config, state->caps, size, min, max);
2132 gst_buffer_pool_config_set_allocator (config, NULL, ¶ms);
2133 gst_buffer_pool_set_config (pool, config);
2141 gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
2143 gst_object_unref (pool);
2145 gst_object_unref (allocator);
2146 gst_video_codec_state_unref (state);
2152 gst_ffmpegviddec_propose_allocation (GstVideoDecoder * decoder,
2155 GstAllocationParams params;
2157 gst_allocation_params_init (¶ms);
2158 params.flags = GST_MEMORY_FLAG_ZERO_PADDED;
2159 params.align = DEFAULT_STRIDE_ALIGN;
2160 params.padding = FF_INPUT_BUFFER_PADDING_SIZE;
2161 /* we would like to have some padding so that we don't have to
2162 * memcpy. We don't suggest an allocator. */
2163 gst_query_add_allocation_param (query, NULL, ¶ms);
2165 return GST_VIDEO_DECODER_CLASS (parent_class)->propose_allocation (decoder,
2170 gst_ffmpegviddec_set_property (GObject * object,
2171 guint prop_id, const GValue * value, GParamSpec * pspec)
2173 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) object;
2177 ffmpegdec->lowres = ffmpegdec->context->lowres = g_value_get_enum (value);
2179 case PROP_SKIPFRAME:
2180 ffmpegdec->skip_frame = ffmpegdec->context->skip_frame =
2181 g_value_get_enum (value);
2183 case PROP_DIRECT_RENDERING:
2184 ffmpegdec->direct_rendering = g_value_get_boolean (value);
2187 ffmpegdec->debug_mv = ffmpegdec->context->debug_mv =
2188 g_value_get_boolean (value);
2190 case PROP_MAX_THREADS:
2191 ffmpegdec->max_threads = g_value_get_int (value);
2193 case PROP_OUTPUT_CORRUPT:
2194 ffmpegdec->output_corrupt = g_value_get_boolean (value);
2197 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2203 gst_ffmpegviddec_get_property (GObject * object,
2204 guint prop_id, GValue * value, GParamSpec * pspec)
2206 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) object;
2210 g_value_set_enum (value, ffmpegdec->context->lowres);
2212 case PROP_SKIPFRAME:
2213 g_value_set_enum (value, ffmpegdec->context->skip_frame);
2215 case PROP_DIRECT_RENDERING:
2216 g_value_set_boolean (value, ffmpegdec->direct_rendering);
2219 g_value_set_boolean (value, ffmpegdec->context->debug_mv);
2221 case PROP_MAX_THREADS:
2222 g_value_set_int (value, ffmpegdec->max_threads);
2224 case PROP_OUTPUT_CORRUPT:
2225 g_value_set_boolean (value, ffmpegdec->output_corrupt);
2228 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2234 gst_ffmpegviddec_register (GstPlugin * plugin)
2236 GTypeInfo typeinfo = {
2237 sizeof (GstFFMpegVidDecClass),
2238 (GBaseInitFunc) gst_ffmpegviddec_base_init,
2240 (GClassInitFunc) gst_ffmpegviddec_class_init,
2243 sizeof (GstFFMpegVidDec),
2245 (GInstanceInitFunc) gst_ffmpegviddec_init,
2251 in_plugin = av_codec_next (NULL);
2253 GST_LOG ("Registering decoders");
2259 /* only video decoders */
2260 if (!av_codec_is_decoder (in_plugin)
2261 || in_plugin->type != AVMEDIA_TYPE_VIDEO)
2264 /* no quasi codecs, please */
2265 if (in_plugin->id == AV_CODEC_ID_RAWVIDEO ||
2266 in_plugin->id == AV_CODEC_ID_V210 ||
2267 in_plugin->id == AV_CODEC_ID_V210X ||
2268 in_plugin->id == AV_CODEC_ID_V308 ||
2269 in_plugin->id == AV_CODEC_ID_V408 ||
2270 in_plugin->id == AV_CODEC_ID_V410 ||
2271 in_plugin->id == AV_CODEC_ID_R210
2272 || in_plugin->id == AV_CODEC_ID_AYUV
2273 || in_plugin->id == AV_CODEC_ID_Y41P
2274 || in_plugin->id == AV_CODEC_ID_012V
2275 || in_plugin->id == AV_CODEC_ID_YUV4
2276 #if AV_VERSION_INT (LIBAVCODEC_VERSION_MAJOR, LIBAVCODEC_VERSION_MINOR, LIBAVCODEC_VERSION_MICRO) >= \
2277 AV_VERSION_INT (57,4,0)
2278 || in_plugin->id == AV_CODEC_ID_WRAPPED_AVFRAME
2280 || in_plugin->id == AV_CODEC_ID_ZLIB) {
2284 /* No decoders depending on external libraries (we don't build them, but
2285 * people who build against an external ffmpeg might have them.
2286 * We have native gstreamer plugins for all of those libraries anyway. */
2287 if (!strncmp (in_plugin->name, "lib", 3)) {
2289 ("Not using external library decoder %s. Use the gstreamer-native ones instead.",
2294 /* No vdpau plugins until we can figure out how to properly use them
2295 * outside of ffmpeg. */
2296 if (g_str_has_suffix (in_plugin->name, "_vdpau")) {
2298 ("Ignoring VDPAU decoder %s. We can't handle this outside of ffmpeg",
2303 if (g_str_has_suffix (in_plugin->name, "_xvmc")) {
2305 ("Ignoring XVMC decoder %s. We can't handle this outside of ffmpeg",
2310 if (strstr (in_plugin->name, "vaapi")) {
2312 ("Ignoring VAAPI decoder %s. We can't handle this outside of ffmpeg",
2317 if (g_str_has_suffix (in_plugin->name, "_qsv")) {
2319 ("Ignoring qsv decoder %s. We can't handle this outside of ffmpeg",
2324 if (g_str_has_suffix (in_plugin->name, "_cuvid")) {
2326 ("Ignoring CUVID decoder %s. We can't handle this outside of ffmpeg",
2331 if (g_str_has_suffix (in_plugin->name, "_v4l2m2m")) {
2333 ("Ignoring V4L2 mem-to-mem decoder %s. We can't handle this outside of ffmpeg",
2338 GST_DEBUG ("Trying plugin %s [%s]", in_plugin->name, in_plugin->long_name);
2340 /* no codecs for which we're GUARANTEED to have better alternatives */
2341 /* MPEG1VIDEO : the mpeg2video decoder is preferred */
2342 /* MP1 : Use MP3 for decoding */
2343 /* MP2 : Use MP3 for decoding */
2344 /* Theora: Use libtheora based theoradec */
2345 if (!strcmp (in_plugin->name, "theora") ||
2346 !strcmp (in_plugin->name, "mpeg1video") ||
2347 strstr (in_plugin->name, "crystalhd") != NULL ||
2348 !strcmp (in_plugin->name, "ass") ||
2349 !strcmp (in_plugin->name, "srt") ||
2350 !strcmp (in_plugin->name, "pgssub") ||
2351 !strcmp (in_plugin->name, "dvdsub") ||
2352 !strcmp (in_plugin->name, "dvbsub")) {
2353 GST_LOG ("Ignoring decoder %s", in_plugin->name);
2357 /* construct the type */
2358 if (!strcmp (in_plugin->name, "hevc")) {
2359 plugin_name = g_strdup ("h265");
2361 plugin_name = g_strdup ((gchar *) in_plugin->name);
2363 g_strdelimit (plugin_name, NULL, '_');
2364 type_name = g_strdup_printf ("avdec_%s", plugin_name);
2365 g_free (plugin_name);
2367 type = g_type_from_name (type_name);
2370 /* create the gtype now */
2372 g_type_register_static (GST_TYPE_VIDEO_DECODER, type_name, &typeinfo,
2374 g_type_set_qdata (type, GST_FFDEC_PARAMS_QDATA, (gpointer) in_plugin);
2377 /* (Ronald) MPEG-4 gets a higher priority because it has been well-
2378 * tested and by far outperforms divxdec/xviddec - so we prefer it.
2379 * msmpeg4v3 same, as it outperforms divxdec for divx3 playback.
2380 * VC1/WMV3 are not working and thus unpreferred for now. */
2381 switch (in_plugin->id) {
2382 case AV_CODEC_ID_MPEG1VIDEO:
2383 case AV_CODEC_ID_MPEG2VIDEO:
2384 case AV_CODEC_ID_MPEG4:
2385 case AV_CODEC_ID_MSMPEG4V3:
2386 case AV_CODEC_ID_H264:
2387 case AV_CODEC_ID_HEVC:
2388 case AV_CODEC_ID_RV10:
2389 case AV_CODEC_ID_RV20:
2390 case AV_CODEC_ID_RV30:
2391 case AV_CODEC_ID_RV40:
2392 rank = GST_RANK_PRIMARY;
2394 /* DVVIDEO: we have a good dv decoder, fast on both ppc as well as x86.
2395 * They say libdv's quality is better though. leave as secondary.
2396 * note: if you change this, see the code in gstdv.c in good/ext/dv.
2398 case AV_CODEC_ID_DVVIDEO:
2399 rank = GST_RANK_SECONDARY;
2402 rank = GST_RANK_MARGINAL;
2405 if (!gst_element_register (plugin, type_name, rank, type)) {
2406 g_warning ("Failed to register %s", type_name);
2414 in_plugin = av_codec_next (in_plugin);
2417 GST_LOG ("Finished Registering decoders");