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 "gstavcodecmap.h"
32 #include "gstavutils.h"
33 #include "gstavviddec.h"
35 #define MAX_TS_MASK 0xff
37 #define DEFAULT_LOWRES 0
38 #define DEFAULT_SKIPFRAME 0
39 #define DEFAULT_DIRECT_RENDERING TRUE
40 #define DEFAULT_DEBUG_MV FALSE
41 #define DEFAULT_MAX_THREADS 0
42 #define DEFAULT_OUTPUT_CORRUPT TRUE
43 #define REQUIRED_POOL_MAX_BUFFERS 32
44 #define DEFAULT_STRIDE_ALIGN 31
45 #define DEFAULT_ALLOC_PARAM { 0, DEFAULT_STRIDE_ALIGN, 0, 0, }
52 PROP_DIRECT_RENDERING,
59 /* A number of function prototypes are given so we can refer to them later. */
60 static void gst_ffmpegviddec_base_init (GstFFMpegVidDecClass * klass);
61 static void gst_ffmpegviddec_class_init (GstFFMpegVidDecClass * klass);
62 static void gst_ffmpegviddec_init (GstFFMpegVidDec * ffmpegdec);
63 static void gst_ffmpegviddec_finalize (GObject * object);
65 static gboolean gst_ffmpegviddec_set_format (GstVideoDecoder * decoder,
66 GstVideoCodecState * state);
67 static GstFlowReturn gst_ffmpegviddec_handle_frame (GstVideoDecoder * decoder,
68 GstVideoCodecFrame * frame);
69 static gboolean gst_ffmpegviddec_start (GstVideoDecoder * decoder);
70 static gboolean gst_ffmpegviddec_stop (GstVideoDecoder * decoder);
71 static gboolean gst_ffmpegviddec_flush (GstVideoDecoder * decoder);
72 static gboolean gst_ffmpegviddec_decide_allocation (GstVideoDecoder * decoder,
74 static gboolean gst_ffmpegviddec_propose_allocation (GstVideoDecoder * decoder,
77 static void gst_ffmpegviddec_set_property (GObject * object,
78 guint prop_id, const GValue * value, GParamSpec * pspec);
79 static void gst_ffmpegviddec_get_property (GObject * object,
80 guint prop_id, GValue * value, GParamSpec * pspec);
82 static gboolean gst_ffmpegviddec_negotiate (GstFFMpegVidDec * ffmpegdec,
83 AVCodecContext * context, AVFrame * picture);
85 /* some sort of bufferpool handling, but different */
86 static int gst_ffmpegviddec_get_buffer2 (AVCodecContext * context,
87 AVFrame * picture, int flags);
89 static GstFlowReturn gst_ffmpegviddec_finish (GstVideoDecoder * decoder);
90 static GstFlowReturn gst_ffmpegviddec_drain (GstVideoDecoder * decoder);
92 static gboolean picture_changed (GstFFMpegVidDec * ffmpegdec,
94 static gboolean context_changed (GstFFMpegVidDec * ffmpegdec,
95 AVCodecContext * context);
97 #define GST_FFDEC_PARAMS_QDATA g_quark_from_static_string("avdec-params")
99 static GstElementClass *parent_class = NULL;
101 #define GST_FFMPEGVIDDEC_TYPE_LOWRES (gst_ffmpegviddec_lowres_get_type())
103 gst_ffmpegviddec_lowres_get_type (void)
105 static GType ffmpegdec_lowres_type = 0;
107 if (!ffmpegdec_lowres_type) {
108 static const GEnumValue ffmpegdec_lowres[] = {
110 {1, "1", "1/2-size"},
111 {2, "2", "1/4-size"},
115 ffmpegdec_lowres_type =
116 g_enum_register_static ("GstLibAVVidDecLowres", ffmpegdec_lowres);
119 return ffmpegdec_lowres_type;
122 #define GST_FFMPEGVIDDEC_TYPE_SKIPFRAME (gst_ffmpegviddec_skipframe_get_type())
124 gst_ffmpegviddec_skipframe_get_type (void)
126 static GType ffmpegdec_skipframe_type = 0;
128 if (!ffmpegdec_skipframe_type) {
129 static const GEnumValue ffmpegdec_skipframe[] = {
130 {0, "0", "Skip nothing"},
131 {1, "1", "Skip B-frames"},
132 {2, "2", "Skip IDCT/Dequantization"},
133 {5, "5", "Skip everything"},
137 ffmpegdec_skipframe_type =
138 g_enum_register_static ("GstLibAVVidDecSkipFrame", ffmpegdec_skipframe);
141 return ffmpegdec_skipframe_type;
145 gst_ffmpegviddec_base_init (GstFFMpegVidDecClass * klass)
147 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
148 GstPadTemplate *sinktempl, *srctempl;
149 GstCaps *sinkcaps, *srccaps;
151 gchar *longname, *description;
154 (AVCodec *) g_type_get_qdata (G_OBJECT_CLASS_TYPE (klass),
155 GST_FFDEC_PARAMS_QDATA);
156 g_assert (in_plugin != NULL);
158 /* construct the element details struct */
159 longname = g_strdup_printf ("libav %s decoder", in_plugin->long_name);
160 description = g_strdup_printf ("libav %s decoder", in_plugin->name);
161 gst_element_class_set_metadata (element_class, longname,
162 "Codec/Decoder/Video", description,
163 "Wim Taymans <wim.taymans@gmail.com>, "
164 "Ronald Bultje <rbultje@ronald.bitfreak.net>, "
165 "Edward Hervey <bilboed@bilboed.com>");
167 g_free (description);
170 sinkcaps = gst_ffmpeg_codecid_to_caps (in_plugin->id, NULL, FALSE);
172 GST_DEBUG ("Couldn't get sink caps for decoder '%s'", in_plugin->name);
173 sinkcaps = gst_caps_new_empty_simple ("unknown/unknown");
175 srccaps = gst_ffmpeg_codectype_to_video_caps (NULL,
176 in_plugin->id, FALSE, in_plugin);
178 GST_DEBUG ("Couldn't get source caps for decoder '%s'", in_plugin->name);
179 srccaps = gst_caps_from_string ("video/x-raw");
183 sinktempl = gst_pad_template_new ("sink", GST_PAD_SINK,
184 GST_PAD_ALWAYS, sinkcaps);
185 srctempl = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, srccaps);
187 gst_element_class_add_pad_template (element_class, srctempl);
188 gst_element_class_add_pad_template (element_class, sinktempl);
190 gst_caps_unref (sinkcaps);
191 gst_caps_unref (srccaps);
193 klass->in_plugin = in_plugin;
197 gst_ffmpegviddec_class_init (GstFFMpegVidDecClass * klass)
199 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
200 GstVideoDecoderClass *viddec_class = GST_VIDEO_DECODER_CLASS (klass);
203 parent_class = g_type_class_peek_parent (klass);
205 gobject_class->finalize = gst_ffmpegviddec_finalize;
207 gobject_class->set_property = gst_ffmpegviddec_set_property;
208 gobject_class->get_property = gst_ffmpegviddec_get_property;
210 g_object_class_install_property (gobject_class, PROP_SKIPFRAME,
211 g_param_spec_enum ("skip-frame", "Skip frames",
212 "Which types of frames to skip during decoding",
213 GST_FFMPEGVIDDEC_TYPE_SKIPFRAME, 0,
214 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
215 g_object_class_install_property (gobject_class, PROP_LOWRES,
216 g_param_spec_enum ("lowres", "Low resolution",
217 "At which resolution to decode images",
218 GST_FFMPEGVIDDEC_TYPE_LOWRES, 0,
219 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
220 g_object_class_install_property (gobject_class, PROP_DIRECT_RENDERING,
221 g_param_spec_boolean ("direct-rendering", "Direct Rendering",
222 "Enable direct rendering", DEFAULT_DIRECT_RENDERING,
223 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
224 g_object_class_install_property (gobject_class, PROP_DEBUG_MV,
225 g_param_spec_boolean ("debug-mv", "Debug motion vectors",
226 "Whether libav should print motion vectors on top of the image",
227 DEFAULT_DEBUG_MV, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
228 g_object_class_install_property (gobject_class, PROP_OUTPUT_CORRUPT,
229 g_param_spec_boolean ("output-corrupt", "Output corrupt buffers",
230 "Whether libav should output frames even if corrupted",
231 DEFAULT_OUTPUT_CORRUPT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
233 caps = klass->in_plugin->capabilities;
234 if (caps & (AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_SLICE_THREADS)) {
235 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MAX_THREADS,
236 g_param_spec_int ("max-threads", "Maximum decode threads",
237 "Maximum number of worker threads to spawn. (0 = auto)",
238 0, G_MAXINT, DEFAULT_MAX_THREADS,
239 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
242 viddec_class->set_format = gst_ffmpegviddec_set_format;
243 viddec_class->handle_frame = gst_ffmpegviddec_handle_frame;
244 viddec_class->start = gst_ffmpegviddec_start;
245 viddec_class->stop = gst_ffmpegviddec_stop;
246 viddec_class->flush = gst_ffmpegviddec_flush;
247 viddec_class->finish = gst_ffmpegviddec_finish;
248 viddec_class->drain = gst_ffmpegviddec_drain;
249 viddec_class->decide_allocation = gst_ffmpegviddec_decide_allocation;
250 viddec_class->propose_allocation = gst_ffmpegviddec_propose_allocation;
254 gst_ffmpegviddec_init (GstFFMpegVidDec * ffmpegdec)
256 GstFFMpegVidDecClass *klass =
257 (GstFFMpegVidDecClass *) G_OBJECT_GET_CLASS (ffmpegdec);
259 /* some ffmpeg data */
260 ffmpegdec->context = avcodec_alloc_context3 (klass->in_plugin);
261 ffmpegdec->context->opaque = ffmpegdec;
262 ffmpegdec->picture = av_frame_alloc ();
263 ffmpegdec->opened = FALSE;
264 ffmpegdec->skip_frame = ffmpegdec->lowres = 0;
265 ffmpegdec->direct_rendering = DEFAULT_DIRECT_RENDERING;
266 ffmpegdec->debug_mv = DEFAULT_DEBUG_MV;
267 ffmpegdec->max_threads = DEFAULT_MAX_THREADS;
268 ffmpegdec->output_corrupt = DEFAULT_OUTPUT_CORRUPT;
270 GST_PAD_SET_ACCEPT_TEMPLATE (GST_VIDEO_DECODER_SINK_PAD (ffmpegdec));
271 gst_video_decoder_set_use_default_pad_acceptcaps (GST_VIDEO_DECODER_CAST
274 gst_video_decoder_set_needs_format (GST_VIDEO_DECODER (ffmpegdec), TRUE);
278 gst_ffmpegviddec_finalize (GObject * object)
280 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) object;
282 av_frame_free (&ffmpegdec->picture);
284 if (ffmpegdec->context != NULL) {
285 gst_ffmpeg_avcodec_close (ffmpegdec->context);
286 av_free (ffmpegdec->context);
287 ffmpegdec->context = NULL;
290 G_OBJECT_CLASS (parent_class)->finalize (object);
294 gst_ffmpegviddec_context_set_flags (AVCodecContext * context, guint flags,
297 g_return_if_fail (context != NULL);
300 context->flags |= flags;
302 context->flags &= ~flags;
307 gst_ffmpegviddec_close (GstFFMpegVidDec * ffmpegdec, gboolean reset)
309 GstFFMpegVidDecClass *oclass;
312 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
314 GST_LOG_OBJECT (ffmpegdec, "closing ffmpeg codec");
316 gst_caps_replace (&ffmpegdec->last_caps, NULL);
318 gst_ffmpeg_avcodec_close (ffmpegdec->context);
319 ffmpegdec->opened = FALSE;
321 for (i = 0; i < G_N_ELEMENTS (ffmpegdec->stride); i++)
322 ffmpegdec->stride[i] = -1;
324 gst_buffer_replace (&ffmpegdec->palette, NULL);
326 if (ffmpegdec->context->extradata) {
327 av_free (ffmpegdec->context->extradata);
328 ffmpegdec->context->extradata = NULL;
331 if (avcodec_get_context_defaults3 (ffmpegdec->context,
332 oclass->in_plugin) < 0) {
333 GST_DEBUG_OBJECT (ffmpegdec, "Failed to set context defaults");
336 ffmpegdec->context->opaque = ffmpegdec;
343 gst_ffmpegviddec_open (GstFFMpegVidDec * ffmpegdec)
345 GstFFMpegVidDecClass *oclass;
348 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
350 if (gst_ffmpeg_avcodec_open (ffmpegdec->context, oclass->in_plugin) < 0)
353 for (i = 0; i < G_N_ELEMENTS (ffmpegdec->stride); i++)
354 ffmpegdec->stride[i] = -1;
356 ffmpegdec->opened = TRUE;
358 GST_LOG_OBJECT (ffmpegdec, "Opened libav codec %s, id %d",
359 oclass->in_plugin->name, oclass->in_plugin->id);
361 gst_ffmpegviddec_context_set_flags (ffmpegdec->context,
362 AV_CODEC_FLAG_OUTPUT_CORRUPT, ffmpegdec->output_corrupt);
369 gst_ffmpegviddec_close (ffmpegdec, TRUE);
370 GST_DEBUG_OBJECT (ffmpegdec, "avdec_%s: Failed to open libav codec",
371 oclass->in_plugin->name);
377 gst_ffmpegviddec_get_palette (GstFFMpegVidDec * ffmpegdec,
378 GstVideoCodecState * state)
380 GstStructure *str = gst_caps_get_structure (state->caps, 0);
381 const GValue *palette_v;
384 /* do we have a palette? */
385 if ((palette_v = gst_structure_get_value (str, "palette_data"))) {
386 palette = gst_value_get_buffer (palette_v);
387 GST_DEBUG ("got palette data %p", palette);
388 if (gst_buffer_get_size (palette) >= AVPALETTE_SIZE) {
389 gst_buffer_replace (&ffmpegdec->palette, palette);
396 gst_ffmpegviddec_set_format (GstVideoDecoder * decoder,
397 GstVideoCodecState * state)
399 GstFFMpegVidDec *ffmpegdec;
400 GstFFMpegVidDecClass *oclass;
401 GstClockTime latency = GST_CLOCK_TIME_NONE;
402 gboolean ret = FALSE;
404 ffmpegdec = (GstFFMpegVidDec *) decoder;
405 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
407 if (ffmpegdec->last_caps != NULL &&
408 gst_caps_is_equal (ffmpegdec->last_caps, state->caps)) {
412 GST_DEBUG_OBJECT (ffmpegdec, "setcaps called");
414 GST_OBJECT_LOCK (ffmpegdec);
415 /* stupid check for VC1 */
416 if ((oclass->in_plugin->id == AV_CODEC_ID_WMV3) ||
417 (oclass->in_plugin->id == AV_CODEC_ID_VC1))
418 oclass->in_plugin->id = gst_ffmpeg_caps_to_codecid (state->caps, NULL);
420 /* close old session */
421 if (ffmpegdec->opened) {
422 GST_OBJECT_UNLOCK (ffmpegdec);
423 gst_ffmpegviddec_finish (decoder);
424 GST_OBJECT_LOCK (ffmpegdec);
425 if (!gst_ffmpegviddec_close (ffmpegdec, TRUE)) {
426 GST_OBJECT_UNLOCK (ffmpegdec);
429 ffmpegdec->pic_pix_fmt = 0;
430 ffmpegdec->pic_width = 0;
431 ffmpegdec->pic_height = 0;
432 ffmpegdec->pic_par_n = 0;
433 ffmpegdec->pic_par_d = 0;
434 ffmpegdec->pic_interlaced = 0;
435 ffmpegdec->pic_field_order = 0;
436 ffmpegdec->pic_field_order_changed = FALSE;
437 ffmpegdec->ctx_ticks = 0;
438 ffmpegdec->ctx_time_n = 0;
439 ffmpegdec->ctx_time_d = 0;
440 ffmpegdec->cur_multiview_mode = GST_VIDEO_MULTIVIEW_MODE_NONE;
441 ffmpegdec->cur_multiview_flags = GST_VIDEO_MULTIVIEW_FLAGS_NONE;
444 gst_caps_replace (&ffmpegdec->last_caps, state->caps);
446 /* set buffer functions */
447 ffmpegdec->context->get_buffer2 = gst_ffmpegviddec_get_buffer2;
448 ffmpegdec->context->draw_horiz_band = NULL;
450 /* reset coded_width/_height to prevent it being reused from last time when
451 * the codec is opened again, causing a mismatch and possible
452 * segfault/corruption. (Common scenario when renegotiating caps) */
453 ffmpegdec->context->coded_width = 0;
454 ffmpegdec->context->coded_height = 0;
456 GST_LOG_OBJECT (ffmpegdec, "size %dx%d", ffmpegdec->context->width,
457 ffmpegdec->context->height);
459 /* FIXME : Create a method that takes GstVideoCodecState instead */
460 /* get size and so */
461 gst_ffmpeg_caps_with_codecid (oclass->in_plugin->id,
462 oclass->in_plugin->type, state->caps, ffmpegdec->context);
464 GST_LOG_OBJECT (ffmpegdec, "size after %dx%d", ffmpegdec->context->width,
465 ffmpegdec->context->height);
467 gst_ffmpegviddec_get_palette (ffmpegdec, state);
469 if (!ffmpegdec->context->time_base.den || !ffmpegdec->context->time_base.num) {
470 GST_DEBUG_OBJECT (ffmpegdec, "forcing 25/1 framerate");
471 ffmpegdec->context->time_base.num = 1;
472 ffmpegdec->context->time_base.den = 25;
475 /* workaround encoder bugs */
476 ffmpegdec->context->workaround_bugs |= FF_BUG_AUTODETECT;
477 ffmpegdec->context->err_recognition = 1;
480 ffmpegdec->context->lowres = ffmpegdec->lowres;
481 ffmpegdec->context->skip_frame = ffmpegdec->skip_frame;
483 /* ffmpeg can draw motion vectors on top of the image (not every decoder
485 ffmpegdec->context->debug_mv = ffmpegdec->debug_mv;
491 if (ffmpegdec->max_threads == 0) {
492 if (!(oclass->in_plugin->capabilities & AV_CODEC_CAP_AUTO_THREADS))
493 ffmpegdec->context->thread_count = gst_ffmpeg_auto_max_threads ();
495 ffmpegdec->context->thread_count = 0;
497 ffmpegdec->context->thread_count = ffmpegdec->max_threads;
499 query = gst_query_new_latency ();
501 /* Check if upstream is live. If it isn't we can enable frame based
502 * threading, which is adding latency */
503 if (gst_pad_peer_query (GST_VIDEO_DECODER_SINK_PAD (ffmpegdec), query)) {
504 gst_query_parse_latency (query, &is_live, NULL, NULL);
506 gst_query_unref (query);
509 ffmpegdec->context->thread_type = FF_THREAD_SLICE;
511 ffmpegdec->context->thread_type = FF_THREAD_SLICE | FF_THREAD_FRAME;
514 /* open codec - we don't select an output pix_fmt yet,
515 * simply because we don't know! We only get it
516 * during playback... */
517 if (!gst_ffmpegviddec_open (ffmpegdec))
520 if (ffmpegdec->input_state)
521 gst_video_codec_state_unref (ffmpegdec->input_state);
522 ffmpegdec->input_state = gst_video_codec_state_ref (state);
524 if (ffmpegdec->input_state->info.fps_n) {
525 GstVideoInfo *info = &ffmpegdec->input_state->info;
526 latency = gst_util_uint64_scale_ceil (
527 (ffmpegdec->context->has_b_frames) * GST_SECOND, info->fps_d,
534 GST_OBJECT_UNLOCK (ffmpegdec);
536 if (GST_CLOCK_TIME_IS_VALID (latency))
537 gst_video_decoder_set_latency (decoder, latency, latency);
544 GST_DEBUG_OBJECT (ffmpegdec, "Failed to open");
551 GstFFMpegVidDec *ffmpegdec;
552 GstVideoCodecFrame *frame;
554 GstVideoFrame vframe;
556 AVBufferRef *avbuffer;
557 } GstFFMpegVidDecVideoFrame;
559 static GstFFMpegVidDecVideoFrame *
560 gst_ffmpegviddec_video_frame_new (GstFFMpegVidDec * ffmpegdec,
561 GstVideoCodecFrame * frame)
563 GstFFMpegVidDecVideoFrame *dframe;
565 dframe = g_slice_new0 (GstFFMpegVidDecVideoFrame);
566 dframe->ffmpegdec = ffmpegdec;
567 dframe->frame = frame;
569 GST_DEBUG_OBJECT (ffmpegdec, "new video frame %p", dframe);
575 gst_ffmpegviddec_video_frame_free (GstFFMpegVidDec * ffmpegdec,
576 GstFFMpegVidDecVideoFrame * frame)
578 GST_DEBUG_OBJECT (ffmpegdec, "free video frame %p", frame);
581 gst_video_frame_unmap (&frame->vframe);
582 gst_video_decoder_release_frame (GST_VIDEO_DECODER (ffmpegdec), frame->frame);
583 gst_buffer_replace (&frame->buffer, NULL);
584 if (frame->avbuffer) {
585 av_buffer_unref (&frame->avbuffer);
587 g_slice_free (GstFFMpegVidDecVideoFrame, frame);
591 dummy_free_buffer (void *opaque, uint8_t * data)
593 GstFFMpegVidDecVideoFrame *frame = opaque;
595 gst_ffmpegviddec_video_frame_free (frame->ffmpegdec, frame);
598 /* This function prepares the pool configuration for direct rendering. To use
599 * this method, the codec should support direct rendering and the pool should
600 * support video meta and video alignment */
602 gst_ffmpegvideodec_prepare_dr_pool (GstFFMpegVidDec * ffmpegdec,
603 GstBufferPool * pool, GstVideoInfo * info, GstStructure * config)
605 GstAllocationParams params;
606 GstVideoAlignment align;
607 GstAllocator *allocator = NULL;
609 gint linesize_align[4];
614 width = GST_VIDEO_INFO_WIDTH (info);
615 height = GST_VIDEO_INFO_HEIGHT (info);
617 /* let ffmpeg find the alignment and padding */
618 avcodec_align_dimensions2 (ffmpegdec->context, &width, &height,
621 if (ffmpegdec->context->flags & CODEC_FLAG_EMU_EDGE)
624 edge = avcodec_get_edge_width ();
626 /* increase the size for the padding */
630 align.padding_top = edge;
631 align.padding_left = edge;
632 align.padding_right = width - GST_VIDEO_INFO_WIDTH (info) - edge;
633 align.padding_bottom = height - GST_VIDEO_INFO_HEIGHT (info) - edge;
635 /* add extra padding to match libav buffer allocation sizes */
636 align.padding_bottom++;
638 gst_buffer_pool_config_get_allocator (config, &allocator, ¶ms);
640 max_align = DEFAULT_STRIDE_ALIGN;
641 max_align |= params.align;
643 for (i = 0; i < GST_VIDEO_MAX_PLANES; i++) {
644 if (linesize_align[i] > 0)
645 max_align |= linesize_align[i] - 1;
648 for (i = 0; i < GST_VIDEO_MAX_PLANES; i++)
649 align.stride_align[i] = max_align;
651 params.align = max_align;
653 gst_buffer_pool_config_set_allocator (config, allocator, ¶ms);
655 GST_DEBUG_OBJECT (ffmpegdec, "aligned dimension %dx%d -> %dx%d "
656 "padding t:%u l:%u r:%u b:%u, stride_align %d:%d:%d:%d",
657 GST_VIDEO_INFO_WIDTH (info),
658 GST_VIDEO_INFO_HEIGHT (info), width, height, align.padding_top,
659 align.padding_left, align.padding_right, align.padding_bottom,
660 align.stride_align[0], align.stride_align[1], align.stride_align[2],
661 align.stride_align[3]);
663 gst_buffer_pool_config_add_option (config,
664 GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
665 gst_buffer_pool_config_set_video_alignment (config, &align);
669 gst_ffmpegviddec_ensure_internal_pool (GstFFMpegVidDec * ffmpegdec,
672 GstAllocationParams params = DEFAULT_ALLOC_PARAM;
674 GstVideoFormat format;
676 GstStructure *config;
679 if (ffmpegdec->internal_pool != NULL &&
680 ffmpegdec->pool_width == picture->width &&
681 ffmpegdec->pool_height == picture->height &&
682 ffmpegdec->pool_format == picture->format)
685 GST_DEBUG_OBJECT (ffmpegdec, "Updating internal pool (%i, %i)",
686 picture->width, picture->height);
688 format = gst_ffmpeg_pixfmt_to_videoformat (picture->format);
689 gst_video_info_set_format (&info, format, picture->width, picture->height);
691 for (i = 0; i < G_N_ELEMENTS (ffmpegdec->stride); i++)
692 ffmpegdec->stride[i] = -1;
694 if (ffmpegdec->internal_pool)
695 gst_object_unref (ffmpegdec->internal_pool);
697 ffmpegdec->internal_pool = gst_video_buffer_pool_new ();
698 config = gst_buffer_pool_get_config (ffmpegdec->internal_pool);
700 caps = gst_video_info_to_caps (&info);
701 gst_buffer_pool_config_set_params (config, caps, info.size, 2, 0);
702 gst_buffer_pool_config_set_allocator (config, NULL, ¶ms);
703 gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
705 gst_ffmpegvideodec_prepare_dr_pool (ffmpegdec,
706 ffmpegdec->internal_pool, &info, config);
707 /* generic video pool never fails */
708 gst_buffer_pool_set_config (ffmpegdec->internal_pool, config);
709 gst_caps_unref (caps);
711 gst_buffer_pool_set_active (ffmpegdec->internal_pool, TRUE);
713 /* Remember pool size so we can detect changes */
714 ffmpegdec->pool_width = picture->width;
715 ffmpegdec->pool_height = picture->height;
716 ffmpegdec->pool_format = picture->format;
717 ffmpegdec->pool_info = info;
721 gst_ffmpegviddec_can_direct_render (GstFFMpegVidDec * ffmpegdec)
723 GstFFMpegVidDecClass *oclass;
725 if (!ffmpegdec->direct_rendering)
728 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
729 return ((oclass->in_plugin->capabilities & AV_CODEC_CAP_DR1) ==
733 /* called when ffmpeg wants us to allocate a buffer to write the decoded frame
734 * into. We try to give it memory from our pool */
736 gst_ffmpegviddec_get_buffer2 (AVCodecContext * context, AVFrame * picture,
739 GstVideoCodecFrame *frame;
740 GstFFMpegVidDecVideoFrame *dframe;
741 GstFFMpegVidDec *ffmpegdec;
745 ffmpegdec = (GstFFMpegVidDec *) context->opaque;
747 GST_DEBUG_OBJECT (ffmpegdec, "getting buffer picture %p", picture);
749 /* apply the last info we have seen to this picture, when we get the
750 * picture back from ffmpeg we can use this to correctly timestamp the output
752 GST_DEBUG_OBJECT (ffmpegdec, "opaque value SN %d",
753 (gint32) picture->reordered_opaque);
756 gst_video_decoder_get_frame (GST_VIDEO_DECODER (ffmpegdec),
757 picture->reordered_opaque);
758 if (G_UNLIKELY (frame == NULL))
761 /* now it has a buffer allocated, so it is real and will also
763 GST_VIDEO_CODEC_FRAME_FLAG_UNSET (frame,
764 GST_VIDEO_CODEC_FRAME_FLAG_DECODE_ONLY);
766 if (G_UNLIKELY (frame->output_buffer != NULL))
767 goto duplicate_frame;
769 /* GstFFMpegVidDecVideoFrame receives the frame ref */
770 if (picture->opaque) {
771 dframe = picture->opaque;
772 dframe->frame = frame;
774 picture->opaque = dframe =
775 gst_ffmpegviddec_video_frame_new (ffmpegdec, frame);
778 GST_DEBUG_OBJECT (ffmpegdec, "storing opaque %p", dframe);
780 if (!gst_ffmpegviddec_can_direct_render (ffmpegdec))
783 gst_ffmpegviddec_ensure_internal_pool (ffmpegdec, picture);
785 ret = gst_buffer_pool_acquire_buffer (ffmpegdec->internal_pool,
786 &frame->output_buffer, NULL);
787 if (ret != GST_FLOW_OK)
790 /* piggy-backed alloc'ed on the frame,
791 * and there was much rejoicing and we are grateful.
792 * Now take away buffer from frame, we will give it back later when decoded.
793 * This allows multiple request for a buffer per frame; unusual but possible. */
794 gst_buffer_replace (&dframe->buffer, frame->output_buffer);
795 gst_buffer_replace (&frame->output_buffer, NULL);
798 if (!gst_video_frame_map (&dframe->vframe, &ffmpegdec->pool_info,
799 dframe->buffer, GST_MAP_READWRITE))
801 dframe->mapped = TRUE;
803 for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
804 if (c < GST_VIDEO_INFO_N_PLANES (&ffmpegdec->pool_info)) {
805 picture->data[c] = GST_VIDEO_FRAME_PLANE_DATA (&dframe->vframe, c);
806 picture->linesize[c] = GST_VIDEO_FRAME_PLANE_STRIDE (&dframe->vframe, c);
808 if (ffmpegdec->stride[c] == -1)
809 ffmpegdec->stride[c] = picture->linesize[c];
811 /* libav does not allow stride changes, decide allocation should check
812 * before replacing the internal pool with a downstream pool.
813 * https://bugzilla.gnome.org/show_bug.cgi?id=704769
814 * https://bugzilla.libav.org/show_bug.cgi?id=556
816 g_assert (picture->linesize[c] == ffmpegdec->stride[c]);
818 picture->data[c] = NULL;
819 picture->linesize[c] = 0;
821 GST_LOG_OBJECT (ffmpegdec, "linesize %d, data %p", picture->linesize[c],
825 picture->buf[0] = av_buffer_create (NULL, 0, dummy_free_buffer, dframe, 0);
827 GST_LOG_OBJECT (ffmpegdec, "returned frame %p", dframe->buffer);
834 int ret = avcodec_default_get_buffer2 (context, picture, flags);
836 GST_LOG_OBJECT (ffmpegdec, "direct rendering disabled, fallback alloc");
838 for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
839 ffmpegdec->stride[c] = picture->linesize[c];
841 /* Wrap our buffer around the default one to be able to have a callback
842 * when our data can be freed. Just putting our data into the first free
843 * buffer might not work if there are too many allocated already
845 if (picture->buf[0]) {
846 dframe->avbuffer = picture->buf[0];
848 av_buffer_create (picture->buf[0]->data, picture->buf[0]->size,
849 dummy_free_buffer, dframe, 0);
852 av_buffer_create (NULL, 0, dummy_free_buffer, dframe, 0);
859 GST_ELEMENT_ERROR (ffmpegdec, RESOURCE, FAILED,
860 ("Unable to allocate memory"),
861 ("The downstream pool failed to allocated buffer."));
866 GST_ELEMENT_ERROR (ffmpegdec, RESOURCE, OPEN_READ_WRITE,
867 ("Cannot access memory for read and write operation."),
868 ("The video memory allocated from downstream pool could not mapped for"
874 GST_WARNING_OBJECT (ffmpegdec, "already alloc'ed output buffer for frame");
875 gst_video_codec_frame_unref (frame);
880 GST_WARNING_OBJECT (ffmpegdec, "Couldn't get codec frame !");
886 picture_changed (GstFFMpegVidDec * ffmpegdec, AVFrame * picture)
888 gint pic_field_order = 0;
890 if (picture->interlaced_frame) {
891 if (picture->repeat_pict)
892 pic_field_order |= GST_VIDEO_BUFFER_FLAG_RFF;
893 if (picture->top_field_first)
894 pic_field_order |= GST_VIDEO_BUFFER_FLAG_TFF;
897 return !(ffmpegdec->pic_width == picture->width
898 && ffmpegdec->pic_height == picture->height
899 && ffmpegdec->pic_pix_fmt == picture->format
900 && ffmpegdec->pic_par_n == picture->sample_aspect_ratio.num
901 && ffmpegdec->pic_par_d == picture->sample_aspect_ratio.den
902 && ffmpegdec->pic_interlaced == picture->interlaced_frame
903 && ffmpegdec->pic_field_order == pic_field_order
904 && ffmpegdec->cur_multiview_mode == ffmpegdec->picture_multiview_mode
905 && ffmpegdec->cur_multiview_flags == ffmpegdec->picture_multiview_flags);
909 context_changed (GstFFMpegVidDec * ffmpegdec, AVCodecContext * context)
911 return !(ffmpegdec->ctx_ticks == context->ticks_per_frame
912 && ffmpegdec->ctx_time_n == context->time_base.num
913 && ffmpegdec->ctx_time_d == context->time_base.den);
917 update_video_context (GstFFMpegVidDec * ffmpegdec, AVCodecContext * context,
920 gint pic_field_order = 0;
922 if (picture->interlaced_frame) {
923 if (picture->repeat_pict)
924 pic_field_order |= GST_VIDEO_BUFFER_FLAG_RFF;
925 if (picture->top_field_first)
926 pic_field_order |= GST_VIDEO_BUFFER_FLAG_TFF;
929 if (!picture_changed (ffmpegdec, picture)
930 && !context_changed (ffmpegdec, context))
933 GST_DEBUG_OBJECT (ffmpegdec,
934 "Renegotiating video from %dx%d@ %d:%d PAR %d/%d fps pixfmt %d to %dx%d@ %d:%d PAR %d/%d fps pixfmt %d",
935 ffmpegdec->pic_width, ffmpegdec->pic_height,
936 ffmpegdec->pic_par_n, ffmpegdec->pic_par_d,
937 ffmpegdec->ctx_time_n, ffmpegdec->ctx_time_d,
938 ffmpegdec->pic_pix_fmt,
939 picture->width, picture->height,
940 picture->sample_aspect_ratio.num,
941 picture->sample_aspect_ratio.den,
942 context->time_base.num, context->time_base.den, picture->format);
944 ffmpegdec->pic_pix_fmt = picture->format;
945 ffmpegdec->pic_width = picture->width;
946 ffmpegdec->pic_height = picture->height;
947 ffmpegdec->pic_par_n = picture->sample_aspect_ratio.num;
948 ffmpegdec->pic_par_d = picture->sample_aspect_ratio.den;
949 ffmpegdec->cur_multiview_mode = ffmpegdec->picture_multiview_mode;
950 ffmpegdec->cur_multiview_flags = ffmpegdec->picture_multiview_flags;
952 /* Remember if we have interlaced content and the field order changed
953 * at least once. If that happens, we must be interlace-mode=mixed
955 if (ffmpegdec->pic_field_order_changed ||
956 (ffmpegdec->pic_field_order != pic_field_order &&
957 ffmpegdec->pic_interlaced))
958 ffmpegdec->pic_field_order_changed = TRUE;
960 ffmpegdec->pic_field_order = pic_field_order;
961 ffmpegdec->pic_interlaced = picture->interlaced_frame;
963 if (!ffmpegdec->pic_interlaced)
964 ffmpegdec->pic_field_order_changed = FALSE;
966 ffmpegdec->ctx_ticks = context->ticks_per_frame;
967 ffmpegdec->ctx_time_n = context->time_base.num;
968 ffmpegdec->ctx_time_d = context->time_base.den;
974 gst_ffmpegviddec_update_par (GstFFMpegVidDec * ffmpegdec,
975 GstVideoInfo * in_info, GstVideoInfo * out_info)
977 gboolean demuxer_par_set = FALSE;
978 gboolean decoder_par_set = FALSE;
979 gint demuxer_num = 1, demuxer_denom = 1;
980 gint decoder_num = 1, decoder_denom = 1;
982 if (in_info->par_n && in_info->par_d) {
983 demuxer_num = in_info->par_n;
984 demuxer_denom = in_info->par_d;
985 demuxer_par_set = TRUE;
986 GST_DEBUG_OBJECT (ffmpegdec, "Demuxer PAR: %d:%d", demuxer_num,
990 if (ffmpegdec->pic_par_n && ffmpegdec->pic_par_d) {
991 decoder_num = ffmpegdec->pic_par_n;
992 decoder_denom = ffmpegdec->pic_par_d;
993 decoder_par_set = TRUE;
994 GST_DEBUG_OBJECT (ffmpegdec, "Decoder PAR: %d:%d", decoder_num,
998 if (!demuxer_par_set && !decoder_par_set)
1001 if (demuxer_par_set && !decoder_par_set)
1002 goto use_demuxer_par;
1004 if (decoder_par_set && !demuxer_par_set)
1005 goto use_decoder_par;
1007 /* Both the demuxer and the decoder provide a PAR. If one of
1008 * the two PARs is 1:1 and the other one is not, use the one
1009 * that is not 1:1. */
1010 if (demuxer_num == demuxer_denom && decoder_num != decoder_denom)
1011 goto use_decoder_par;
1013 if (decoder_num == decoder_denom && demuxer_num != demuxer_denom)
1014 goto use_demuxer_par;
1016 /* Both PARs are non-1:1, so use the PAR provided by the demuxer */
1017 goto use_demuxer_par;
1021 GST_DEBUG_OBJECT (ffmpegdec,
1022 "Setting decoder provided pixel-aspect-ratio of %u:%u", decoder_num,
1024 out_info->par_n = decoder_num;
1025 out_info->par_d = decoder_denom;
1030 GST_DEBUG_OBJECT (ffmpegdec,
1031 "Setting demuxer provided pixel-aspect-ratio of %u:%u", demuxer_num,
1033 out_info->par_n = demuxer_num;
1034 out_info->par_d = demuxer_denom;
1039 GST_DEBUG_OBJECT (ffmpegdec,
1040 "Neither demuxer nor codec provide a pixel-aspect-ratio");
1041 out_info->par_n = 1;
1042 out_info->par_d = 1;
1047 static GstVideoMultiviewMode
1048 stereo_av_to_gst (enum AVStereo3DType type)
1051 case AV_STEREO3D_SIDEBYSIDE:
1052 return GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE;
1053 case AV_STEREO3D_TOPBOTTOM:
1054 return GST_VIDEO_MULTIVIEW_MODE_TOP_BOTTOM;
1055 case AV_STEREO3D_FRAMESEQUENCE:
1056 return GST_VIDEO_MULTIVIEW_MODE_FRAME_BY_FRAME;
1057 case AV_STEREO3D_CHECKERBOARD:
1058 return GST_VIDEO_MULTIVIEW_MODE_CHECKERBOARD;
1059 case AV_STEREO3D_SIDEBYSIDE_QUINCUNX:
1060 return GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE_QUINCUNX;
1061 case AV_STEREO3D_LINES:
1062 return GST_VIDEO_MULTIVIEW_MODE_ROW_INTERLEAVED;
1063 case AV_STEREO3D_COLUMNS:
1064 return GST_VIDEO_MULTIVIEW_MODE_COLUMN_INTERLEAVED;
1069 return GST_VIDEO_MULTIVIEW_MODE_NONE;
1073 gst_ffmpegviddec_negotiate (GstFFMpegVidDec * ffmpegdec,
1074 AVCodecContext * context, AVFrame * picture)
1077 GstVideoInfo *in_info, *out_info;
1078 GstVideoCodecState *output_state;
1080 GstClockTime latency;
1083 if (!update_video_context (ffmpegdec, context, picture))
1086 fmt = gst_ffmpeg_pixfmt_to_videoformat (ffmpegdec->pic_pix_fmt);
1087 if (G_UNLIKELY (fmt == GST_VIDEO_FORMAT_UNKNOWN))
1088 goto unknown_format;
1091 gst_video_decoder_set_output_state (GST_VIDEO_DECODER (ffmpegdec), fmt,
1092 ffmpegdec->pic_width, ffmpegdec->pic_height, ffmpegdec->input_state);
1093 if (ffmpegdec->output_state)
1094 gst_video_codec_state_unref (ffmpegdec->output_state);
1095 ffmpegdec->output_state = output_state;
1097 in_info = &ffmpegdec->input_state->info;
1098 out_info = &ffmpegdec->output_state->info;
1100 /* set the interlaced flag */
1101 in_s = gst_caps_get_structure (ffmpegdec->input_state->caps, 0);
1103 if (!gst_structure_has_field (in_s, "interlace-mode")) {
1104 if (ffmpegdec->pic_interlaced) {
1105 if (ffmpegdec->pic_field_order_changed ||
1106 (ffmpegdec->pic_field_order & GST_VIDEO_BUFFER_FLAG_RFF)) {
1107 out_info->interlace_mode = GST_VIDEO_INTERLACE_MODE_MIXED;
1109 out_info->interlace_mode = GST_VIDEO_INTERLACE_MODE_INTERLEAVED;
1110 if ((ffmpegdec->pic_field_order & GST_VIDEO_BUFFER_FLAG_TFF))
1111 GST_VIDEO_INFO_FIELD_ORDER (out_info) =
1112 GST_VIDEO_FIELD_ORDER_TOP_FIELD_FIRST;
1114 GST_VIDEO_INFO_FIELD_ORDER (out_info) =
1115 GST_VIDEO_FIELD_ORDER_BOTTOM_FIELD_FIRST;
1118 out_info->interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
1122 if (!gst_structure_has_field (in_s, "chroma-site")) {
1123 switch (context->chroma_sample_location) {
1124 case AVCHROMA_LOC_LEFT:
1125 out_info->chroma_site = GST_VIDEO_CHROMA_SITE_MPEG2;
1127 case AVCHROMA_LOC_CENTER:
1128 out_info->chroma_site = GST_VIDEO_CHROMA_SITE_JPEG;
1130 case AVCHROMA_LOC_TOPLEFT:
1131 out_info->chroma_site = GST_VIDEO_CHROMA_SITE_DV;
1133 case AVCHROMA_LOC_TOP:
1134 out_info->chroma_site = GST_VIDEO_CHROMA_SITE_V_COSITED;
1141 if (!gst_structure_has_field (in_s, "colorimetry")
1142 || in_info->colorimetry.primaries == GST_VIDEO_COLOR_PRIMARIES_UNKNOWN) {
1143 switch (context->color_primaries) {
1144 case AVCOL_PRI_BT709:
1145 out_info->colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_BT709;
1147 case AVCOL_PRI_BT470M:
1148 out_info->colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_BT470M;
1150 case AVCOL_PRI_BT470BG:
1151 out_info->colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_BT470BG;
1153 case AVCOL_PRI_SMPTE170M:
1154 out_info->colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_SMPTE170M;
1156 case AVCOL_PRI_SMPTE240M:
1157 out_info->colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_SMPTE240M;
1159 case AVCOL_PRI_FILM:
1160 out_info->colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_FILM;
1162 case AVCOL_PRI_BT2020:
1163 out_info->colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_BT2020;
1170 if (!gst_structure_has_field (in_s, "colorimetry")
1171 || in_info->colorimetry.transfer == GST_VIDEO_TRANSFER_UNKNOWN) {
1172 switch (context->color_trc) {
1173 case AVCOL_TRC_BT2020_10:
1174 case AVCOL_TRC_BT709:
1175 case AVCOL_TRC_SMPTE170M:
1176 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_BT709;
1178 case AVCOL_TRC_GAMMA22:
1179 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_GAMMA22;
1181 case AVCOL_TRC_GAMMA28:
1182 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_GAMMA28;
1184 case AVCOL_TRC_SMPTE240M:
1185 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_SMPTE240M;
1187 case AVCOL_TRC_LINEAR:
1188 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_GAMMA10;
1191 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_LOG100;
1193 case AVCOL_TRC_LOG_SQRT:
1194 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_LOG316;
1196 case AVCOL_TRC_BT2020_12:
1197 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_BT2020_12;
1204 if (!gst_structure_has_field (in_s, "colorimetry")
1205 || in_info->colorimetry.matrix == GST_VIDEO_COLOR_MATRIX_UNKNOWN) {
1206 switch (context->colorspace) {
1208 out_info->colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_RGB;
1210 case AVCOL_SPC_BT709:
1211 out_info->colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_BT709;
1214 out_info->colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_FCC;
1216 case AVCOL_SPC_BT470BG:
1217 case AVCOL_SPC_SMPTE170M:
1218 out_info->colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_BT601;
1220 case AVCOL_SPC_SMPTE240M:
1221 out_info->colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_SMPTE240M;
1223 case AVCOL_SPC_BT2020_NCL:
1224 out_info->colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_BT2020;
1231 if (!gst_structure_has_field (in_s, "colorimetry")
1232 || in_info->colorimetry.range == GST_VIDEO_COLOR_RANGE_UNKNOWN) {
1233 if (context->color_range == AVCOL_RANGE_JPEG) {
1234 out_info->colorimetry.range = GST_VIDEO_COLOR_RANGE_0_255;
1236 out_info->colorimetry.range = GST_VIDEO_COLOR_RANGE_16_235;
1240 /* try to find a good framerate */
1241 if ((in_info->fps_d && in_info->fps_n) ||
1242 GST_VIDEO_INFO_FLAG_IS_SET (in_info, GST_VIDEO_FLAG_VARIABLE_FPS)) {
1243 /* take framerate from input when it was specified (#313970) */
1244 fps_n = in_info->fps_n;
1245 fps_d = in_info->fps_d;
1247 fps_n = ffmpegdec->ctx_time_d / ffmpegdec->ctx_ticks;
1248 fps_d = ffmpegdec->ctx_time_n;
1251 GST_LOG_OBJECT (ffmpegdec, "invalid framerate: %d/0, -> %d/1", fps_n,
1255 if (gst_util_fraction_compare (fps_n, fps_d, 1000, 1) > 0) {
1256 GST_LOG_OBJECT (ffmpegdec, "excessive framerate: %d/%d, -> 0/1", fps_n,
1263 GST_LOG_OBJECT (ffmpegdec, "setting framerate: %d/%d", fps_n, fps_d);
1264 out_info->fps_n = fps_n;
1265 out_info->fps_d = fps_d;
1267 /* calculate and update par now */
1268 gst_ffmpegviddec_update_par (ffmpegdec, in_info, out_info);
1270 GST_VIDEO_INFO_MULTIVIEW_MODE (out_info) = ffmpegdec->cur_multiview_mode;
1271 GST_VIDEO_INFO_MULTIVIEW_FLAGS (out_info) = ffmpegdec->cur_multiview_flags;
1273 if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (ffmpegdec)))
1274 goto negotiate_failed;
1276 /* The decoder is configured, we now know the true latency */
1279 gst_util_uint64_scale_ceil (ffmpegdec->context->has_b_frames *
1280 GST_SECOND, fps_d, fps_n);
1281 gst_video_decoder_set_latency (GST_VIDEO_DECODER (ffmpegdec), latency,
1290 GST_ERROR_OBJECT (ffmpegdec,
1291 "decoder requires a video format unsupported by GStreamer");
1296 /* Reset so we try again next time even if force==FALSE */
1297 ffmpegdec->pic_pix_fmt = 0;
1298 ffmpegdec->pic_width = 0;
1299 ffmpegdec->pic_height = 0;
1300 ffmpegdec->pic_par_n = 0;
1301 ffmpegdec->pic_par_d = 0;
1302 ffmpegdec->pic_interlaced = 0;
1303 ffmpegdec->pic_field_order = 0;
1304 ffmpegdec->pic_field_order_changed = FALSE;
1305 ffmpegdec->ctx_ticks = 0;
1306 ffmpegdec->ctx_time_n = 0;
1307 ffmpegdec->ctx_time_d = 0;
1309 GST_ERROR_OBJECT (ffmpegdec, "negotiation failed");
1314 /* perform qos calculations before decoding the next frame.
1316 * Sets the skip_frame flag and if things are really bad, skips to the next
1321 gst_ffmpegviddec_do_qos (GstFFMpegVidDec * ffmpegdec,
1322 GstVideoCodecFrame * frame, gboolean * mode_switch)
1324 GstClockTimeDiff diff;
1325 GstSegmentFlags skip_flags =
1326 GST_VIDEO_DECODER_INPUT_SEGMENT (ffmpegdec).flags;
1328 *mode_switch = FALSE;
1333 if (skip_flags & GST_SEGMENT_FLAG_TRICKMODE_KEY_UNITS) {
1334 ffmpegdec->context->skip_frame = AVDISCARD_NONKEY;
1335 *mode_switch = TRUE;
1336 } else if (skip_flags & GST_SEGMENT_FLAG_TRICKMODE) {
1337 ffmpegdec->context->skip_frame = AVDISCARD_NONREF;
1338 *mode_switch = TRUE;
1341 if (*mode_switch == TRUE) {
1342 /* We've already switched mode, we can return straight away
1343 * without any further calculation */
1348 gst_video_decoder_get_max_decode_time (GST_VIDEO_DECODER (ffmpegdec),
1351 /* if we don't have timing info, then we don't do QoS */
1352 if (G_UNLIKELY (diff == G_MAXINT64)) {
1353 /* Ensure the skipping strategy is the default one */
1354 ffmpegdec->context->skip_frame = ffmpegdec->skip_frame;
1358 GST_DEBUG_OBJECT (ffmpegdec, "decoding time %" G_GINT64_FORMAT, diff);
1360 if (diff > 0 && ffmpegdec->context->skip_frame != AVDISCARD_DEFAULT) {
1361 ffmpegdec->context->skip_frame = AVDISCARD_DEFAULT;
1362 *mode_switch = TRUE;
1363 GST_DEBUG_OBJECT (ffmpegdec, "QOS: normal mode");
1366 else if (diff <= 0 && ffmpegdec->context->skip_frame != AVDISCARD_NONREF) {
1367 ffmpegdec->context->skip_frame = AVDISCARD_NONREF;
1368 *mode_switch = TRUE;
1369 GST_DEBUG_OBJECT (ffmpegdec,
1370 "QOS: hurry up, diff %" G_GINT64_FORMAT " >= 0", diff);
1374 /* get an outbuf buffer with the current picture */
1375 static GstFlowReturn
1376 get_output_buffer (GstFFMpegVidDec * ffmpegdec, GstVideoCodecFrame * frame)
1378 GstFlowReturn ret = GST_FLOW_OK;
1379 AVFrame pic, *outpic;
1380 GstVideoFrame vframe;
1384 GST_LOG_OBJECT (ffmpegdec, "get output buffer");
1386 if (!ffmpegdec->output_state)
1387 goto not_negotiated;
1390 gst_video_decoder_allocate_output_frame (GST_VIDEO_DECODER (ffmpegdec),
1392 if (G_UNLIKELY (ret != GST_FLOW_OK))
1395 /* original ffmpeg code does not handle odd sizes correctly.
1396 * This patched up version does */
1397 /* Fill avpicture */
1398 info = &ffmpegdec->output_state->info;
1399 if (!gst_video_frame_map (&vframe, info, frame->output_buffer,
1400 GST_MAP_READ | GST_MAP_WRITE))
1403 memset (&pic, 0, sizeof (pic));
1404 pic.format = ffmpegdec->pic_pix_fmt;
1405 pic.width = GST_VIDEO_FRAME_WIDTH (&vframe);
1406 pic.height = GST_VIDEO_FRAME_HEIGHT (&vframe);
1407 for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
1408 if (c < GST_VIDEO_INFO_N_PLANES (info)) {
1409 pic.data[c] = GST_VIDEO_FRAME_PLANE_DATA (&vframe, c);
1410 pic.linesize[c] = GST_VIDEO_FRAME_PLANE_STRIDE (&vframe, c);
1411 GST_LOG_OBJECT (ffmpegdec, "[%i] linesize %d, data %p", c,
1412 pic.linesize[c], pic.data[c]);
1415 pic.linesize[c] = 0;
1419 outpic = ffmpegdec->picture;
1421 if (av_frame_copy (&pic, outpic) != 0) {
1422 GST_ERROR_OBJECT (ffmpegdec, "Failed to copy output frame");
1423 ret = GST_FLOW_ERROR;
1426 gst_video_frame_unmap (&vframe);
1428 ffmpegdec->picture->reordered_opaque = -1;
1435 GST_ELEMENT_ERROR (ffmpegdec, RESOURCE, FAILED,
1436 ("Unable to allocate memory"),
1437 ("The downstream pool failed to allocated buffer."));
1442 GST_ELEMENT_ERROR (ffmpegdec, RESOURCE, OPEN_READ_WRITE,
1443 ("Cannot access memory for read and write operation."),
1444 ("The video memory allocated from downstream pool could not mapped for"
1445 "read and write."));
1450 GST_DEBUG_OBJECT (ffmpegdec, "not negotiated");
1451 return GST_FLOW_NOT_NEGOTIATED;
1456 gst_avpacket_init (AVPacket * packet, guint8 * data, guint size)
1458 memset (packet, 0, sizeof (AVPacket));
1459 packet->data = data;
1460 packet->size = size;
1463 /* gst_ffmpegviddec_[video|audio]_frame:
1465 * data: pointer to the data to decode
1466 * size: size of data in bytes
1467 * in_timestamp: incoming timestamp.
1468 * in_duration: incoming duration.
1469 * in_offset: incoming offset (frame number).
1472 * Returns: number of bytes used in decoding. The check for successful decode is
1473 * outbuf being non-NULL.
1476 gst_ffmpegviddec_video_frame (GstFFMpegVidDec * ffmpegdec,
1477 guint8 * data, guint size, gint * have_data, GstVideoCodecFrame * frame,
1478 GstFlowReturn * ret)
1481 gboolean mode_switch;
1482 GstVideoCodecFrame *out_frame;
1483 GstFFMpegVidDecVideoFrame *out_dframe;
1485 GstBufferPool *pool;
1489 /* in case we skip frames */
1490 ffmpegdec->picture->pict_type = -1;
1492 /* run QoS code, we don't stop decoding the frame when we are late because
1493 * else we might skip a reference frame */
1494 gst_ffmpegviddec_do_qos (ffmpegdec, frame, &mode_switch);
1497 /* save reference to the timing info */
1498 ffmpegdec->context->reordered_opaque = (gint64) frame->system_frame_number;
1499 ffmpegdec->picture->reordered_opaque = (gint64) frame->system_frame_number;
1501 GST_DEBUG_OBJECT (ffmpegdec, "stored opaque values idx %d",
1502 frame->system_frame_number);
1505 /* now decode the frame */
1506 gst_avpacket_init (&packet, data, size);
1508 if (ffmpegdec->palette) {
1511 pal = av_packet_new_side_data (&packet, AV_PKT_DATA_PALETTE,
1513 gst_buffer_extract (ffmpegdec->palette, 0, pal, AVPALETTE_SIZE);
1514 GST_DEBUG_OBJECT (ffmpegdec, "copy pal %p %p", &packet, pal);
1517 /* This might call into get_buffer() from another thread,
1518 * which would cause a deadlock. Release the lock here
1519 * and taking it again later seems safe
1520 * See https://bugzilla.gnome.org/show_bug.cgi?id=726020
1522 GST_VIDEO_DECODER_STREAM_UNLOCK (ffmpegdec);
1523 len = avcodec_decode_video2 (ffmpegdec->context,
1524 ffmpegdec->picture, have_data, &packet);
1525 GST_VIDEO_DECODER_STREAM_LOCK (ffmpegdec);
1527 GST_DEBUG_OBJECT (ffmpegdec, "after decode: len %d, have_data %d",
1530 /* when we are in skip_frame mode, don't complain when ffmpeg returned
1531 * no data because we told it to skip stuff. */
1532 if (len < 0 && (mode_switch || ffmpegdec->context->skip_frame))
1535 /* no data, we're done */
1536 if (len < 0 || *have_data == 0)
1539 /* get the output picture timing info again */
1540 out_dframe = ffmpegdec->picture->opaque;
1541 out_frame = gst_video_codec_frame_ref (out_dframe->frame);
1543 /* also give back a buffer allocated by the frame, if any */
1544 gst_buffer_replace (&out_frame->output_buffer, out_dframe->buffer);
1545 gst_buffer_replace (&out_dframe->buffer, NULL);
1547 /* Extract auxilliary info not stored in the main AVframe */
1549 GstVideoInfo *in_info = &ffmpegdec->input_state->info;
1550 /* Take multiview mode from upstream if present */
1551 ffmpegdec->picture_multiview_mode = GST_VIDEO_INFO_MULTIVIEW_MODE (in_info);
1552 ffmpegdec->picture_multiview_flags =
1553 GST_VIDEO_INFO_MULTIVIEW_FLAGS (in_info);
1555 /* Otherwise, see if there's info in the frame */
1556 if (ffmpegdec->picture_multiview_mode == GST_VIDEO_MULTIVIEW_MODE_NONE) {
1557 AVFrameSideData *side_data =
1558 av_frame_get_side_data (ffmpegdec->picture, AV_FRAME_DATA_STEREO3D);
1560 AVStereo3D *stereo = (AVStereo3D *) side_data->data;
1561 ffmpegdec->picture_multiview_mode = stereo_av_to_gst (stereo->type);
1562 if (stereo->flags & AV_STEREO3D_FLAG_INVERT) {
1563 ffmpegdec->picture_multiview_flags =
1564 GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_VIEW_FIRST;
1566 ffmpegdec->picture_multiview_flags = GST_VIDEO_MULTIVIEW_FLAGS_NONE;
1572 GST_DEBUG_OBJECT (ffmpegdec,
1573 "pts %" G_GUINT64_FORMAT " duration %" G_GUINT64_FORMAT,
1574 out_frame->pts, out_frame->duration);
1575 GST_DEBUG_OBJECT (ffmpegdec, "picture: pts %" G_GUINT64_FORMAT,
1576 (guint64) ffmpegdec->picture->pts);
1577 GST_DEBUG_OBJECT (ffmpegdec, "picture: num %d",
1578 ffmpegdec->picture->coded_picture_number);
1579 GST_DEBUG_OBJECT (ffmpegdec, "picture: display %d",
1580 ffmpegdec->picture->display_picture_number);
1581 GST_DEBUG_OBJECT (ffmpegdec, "picture: opaque %p",
1582 ffmpegdec->picture->opaque);
1583 GST_DEBUG_OBJECT (ffmpegdec, "picture: reordered opaque %" G_GUINT64_FORMAT,
1584 (guint64) ffmpegdec->picture->reordered_opaque);
1585 GST_DEBUG_OBJECT (ffmpegdec, "repeat_pict:%d",
1586 ffmpegdec->picture->repeat_pict);
1587 GST_DEBUG_OBJECT (ffmpegdec, "corrupted frame: %d",
1588 ! !(ffmpegdec->picture->flags & AV_FRAME_FLAG_CORRUPT));
1590 if (!gst_ffmpegviddec_negotiate (ffmpegdec, ffmpegdec->context,
1591 ffmpegdec->picture))
1592 goto negotiation_error;
1594 pool = gst_video_decoder_get_buffer_pool (GST_VIDEO_DECODER (ffmpegdec));
1595 if (G_UNLIKELY (out_frame->output_buffer == NULL)) {
1596 *ret = get_output_buffer (ffmpegdec, out_frame);
1597 } else if (G_UNLIKELY (out_frame->output_buffer->pool != pool)) {
1598 GstBuffer *tmp = out_frame->output_buffer;
1599 out_frame->output_buffer = NULL;
1600 *ret = get_output_buffer (ffmpegdec, out_frame);
1601 gst_buffer_unref (tmp);
1603 #ifndef G_DISABLE_ASSERT
1605 GstVideoMeta *vmeta = gst_buffer_get_video_meta (out_frame->output_buffer);
1607 GstVideoInfo *info = &ffmpegdec->output_state->info;
1608 g_assert (vmeta->width == GST_VIDEO_INFO_WIDTH (info));
1609 g_assert (vmeta->height == GST_VIDEO_INFO_HEIGHT (info));
1613 gst_object_unref (pool);
1615 if (G_UNLIKELY (*ret != GST_FLOW_OK))
1618 /* Mark corrupted frames as corrupted */
1619 if (ffmpegdec->picture->flags & AV_FRAME_FLAG_CORRUPT)
1620 GST_BUFFER_FLAG_SET (out_frame->output_buffer, GST_BUFFER_FLAG_CORRUPTED);
1622 if (ffmpegdec->pic_interlaced) {
1623 /* set interlaced flags */
1624 if (ffmpegdec->picture->repeat_pict)
1625 GST_BUFFER_FLAG_SET (out_frame->output_buffer, GST_VIDEO_BUFFER_FLAG_RFF);
1626 if (ffmpegdec->picture->top_field_first)
1627 GST_BUFFER_FLAG_SET (out_frame->output_buffer, GST_VIDEO_BUFFER_FLAG_TFF);
1628 if (ffmpegdec->picture->interlaced_frame)
1629 GST_BUFFER_FLAG_SET (out_frame->output_buffer,
1630 GST_VIDEO_BUFFER_FLAG_INTERLACED);
1634 AVFrameSideData *side_data =
1635 av_frame_get_side_data (ffmpegdec->picture, AV_FRAME_DATA_A53_CC);
1637 GST_LOG_OBJECT (ffmpegdec, "Found CC of size %d", side_data->size);
1638 GST_MEMDUMP ("A53 CC", side_data->data, side_data->size);
1639 out_frame->output_buffer =
1640 gst_buffer_make_writable (out_frame->output_buffer);
1641 gst_buffer_add_video_caption_meta (out_frame->output_buffer,
1642 GST_VIDEO_CAPTION_TYPE_CEA708_RAW, side_data->data, side_data->size);
1647 /* so we decoded this frame, frames preceding it in decoding order
1648 * that still do not have a buffer allocated seem rather useless,
1649 * and can be discarded, due to e.g. misparsed bogus frame
1650 * or non-keyframe in skipped decoding, ...
1651 * In any case, not likely to be seen again, so discard those,
1652 * before they pile up and/or mess with timestamping */
1655 GstVideoDecoder *dec = GST_VIDEO_DECODER (ffmpegdec);
1656 gboolean old = TRUE;
1658 ol = l = gst_video_decoder_get_frames (dec);
1660 GstVideoCodecFrame *tmp = l->data;
1665 if (old && GST_VIDEO_CODEC_FRAME_IS_DECODE_ONLY (tmp)) {
1666 GST_LOG_OBJECT (dec,
1667 "discarding ghost frame %p (#%d) PTS:%" GST_TIME_FORMAT " DTS:%"
1668 GST_TIME_FORMAT, tmp, tmp->system_frame_number,
1669 GST_TIME_ARGS (tmp->pts), GST_TIME_ARGS (tmp->dts));
1670 /* drop extra ref and remove from frame list */
1671 gst_video_decoder_release_frame (dec, tmp);
1673 /* drop extra ref we got */
1674 gst_video_codec_frame_unref (tmp);
1681 av_frame_unref (ffmpegdec->picture);
1683 /* FIXME: Ideally we would remap the buffer read-only now before pushing but
1684 * libav might still have a reference to it!
1687 gst_video_decoder_finish_frame (GST_VIDEO_DECODER (ffmpegdec), out_frame);
1690 GST_DEBUG_OBJECT (ffmpegdec, "return flow %s, len %d",
1691 gst_flow_get_name (*ret), len);
1697 GST_DEBUG_OBJECT (ffmpegdec, "no output buffer");
1698 gst_video_decoder_drop_frame (GST_VIDEO_DECODER (ffmpegdec), out_frame);
1705 if (GST_PAD_IS_FLUSHING (GST_VIDEO_DECODER_SRC_PAD (ffmpegdec))) {
1706 *ret = GST_FLOW_FLUSHING;
1709 GST_WARNING_OBJECT (ffmpegdec, "Error negotiating format");
1710 *ret = GST_FLOW_NOT_NEGOTIATED;
1716 /* gst_ffmpegviddec_frame:
1718 * data: pointer to the data to decode
1719 * size: size of data in bytes
1720 * got_data: 0 if no data was decoded, != 0 otherwise.
1721 * in_time: timestamp of data
1722 * in_duration: duration of data
1723 * ret: GstFlowReturn to return in the chain function
1725 * Decode the given frame and pushes it downstream.
1727 * Returns: Number of bytes used in decoding, -1 on error/failure.
1731 gst_ffmpegviddec_frame (GstFFMpegVidDec * ffmpegdec,
1732 guint8 * data, guint size, gint * have_data, GstVideoCodecFrame * frame,
1733 GstFlowReturn * ret)
1735 GstFFMpegVidDecClass *oclass;
1738 if (G_UNLIKELY (ffmpegdec->context->codec == NULL))
1741 GST_LOG_OBJECT (ffmpegdec, "data:%p, size:%d", data, size);
1744 ffmpegdec->context->frame_number++;
1746 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
1749 gst_ffmpegviddec_video_frame (ffmpegdec, data, size, have_data, frame,
1753 GST_WARNING_OBJECT (ffmpegdec,
1754 "avdec_%s: decoding error (len: %d, have_data: %d)",
1755 oclass->in_plugin->name, len, *have_data);
1763 GST_ERROR_OBJECT (ffmpegdec, "no codec context");
1764 *ret = GST_FLOW_NOT_NEGOTIATED;
1769 static GstFlowReturn
1770 gst_ffmpegviddec_drain (GstVideoDecoder * decoder)
1772 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1773 GstFFMpegVidDecClass *oclass;
1775 if (!ffmpegdec->opened)
1778 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
1780 if (oclass->in_plugin->capabilities & AV_CODEC_CAP_DELAY) {
1781 gint have_data, len;
1784 GST_LOG_OBJECT (ffmpegdec,
1785 "codec has delay capabilities, calling until ffmpeg has drained everything");
1788 len = gst_ffmpegviddec_frame (ffmpegdec, NULL, 0, &have_data, NULL, &ret);
1789 } while (len >= 0 && have_data == 1 && ret == GST_FLOW_OK);
1795 static GstFlowReturn
1796 gst_ffmpegviddec_handle_frame (GstVideoDecoder * decoder,
1797 GstVideoCodecFrame * frame)
1799 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1800 guint8 *data, *bdata;
1801 gint size, len, have_data, bsize;
1803 GstFlowReturn ret = GST_FLOW_OK;
1804 gboolean do_padding;
1806 GST_LOG_OBJECT (ffmpegdec,
1807 "Received new data of size %" G_GSIZE_FORMAT ", dts %" GST_TIME_FORMAT
1808 ", pts:%" GST_TIME_FORMAT ", dur:%" GST_TIME_FORMAT,
1809 gst_buffer_get_size (frame->input_buffer), GST_TIME_ARGS (frame->dts),
1810 GST_TIME_ARGS (frame->pts), GST_TIME_ARGS (frame->duration));
1812 if (!gst_buffer_map (frame->input_buffer, &minfo, GST_MAP_READ)) {
1813 GST_ELEMENT_ERROR (ffmpegdec, STREAM, DECODE, ("Decoding problem"),
1814 ("Failed to map buffer for reading"));
1815 return GST_FLOW_ERROR;
1818 /* treat frame as void until a buffer is requested for it */
1819 GST_VIDEO_CODEC_FRAME_FLAG_SET (frame,
1820 GST_VIDEO_CODEC_FRAME_FLAG_DECODE_ONLY);
1825 if (bsize > 0 && (!GST_MEMORY_IS_ZERO_PADDED (minfo.memory)
1826 || (minfo.maxsize - minfo.size) < AV_INPUT_BUFFER_PADDING_SIZE)) {
1828 if (ffmpegdec->padded_size < bsize + AV_INPUT_BUFFER_PADDING_SIZE) {
1829 ffmpegdec->padded_size = bsize + AV_INPUT_BUFFER_PADDING_SIZE;
1830 ffmpegdec->padded = g_realloc (ffmpegdec->padded, ffmpegdec->padded_size);
1831 GST_LOG_OBJECT (ffmpegdec, "resized padding buffer to %d",
1832 ffmpegdec->padded_size);
1834 GST_CAT_TRACE_OBJECT (CAT_PERFORMANCE, ffmpegdec,
1835 "Copy input to add padding");
1836 memcpy (ffmpegdec->padded, bdata, bsize);
1837 memset (ffmpegdec->padded + bsize, 0, AV_INPUT_BUFFER_PADDING_SIZE);
1839 bdata = ffmpegdec->padded;
1846 guint8 tmp_padding[AV_INPUT_BUFFER_PADDING_SIZE];
1848 /* parse, if at all possible */
1853 /* add temporary padding */
1854 GST_CAT_TRACE_OBJECT (CAT_PERFORMANCE, ffmpegdec,
1855 "Add temporary input padding");
1856 memcpy (tmp_padding, data + size, AV_INPUT_BUFFER_PADDING_SIZE);
1857 memset (data + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
1860 /* decode a frame of audio/video now */
1862 gst_ffmpegviddec_frame (ffmpegdec, data, size, &have_data, frame, &ret);
1864 if (ret != GST_FLOW_OK) {
1865 GST_LOG_OBJECT (ffmpegdec, "breaking because of flow ret %s",
1866 gst_flow_get_name (ret));
1867 /* bad flow return, make sure we discard all data and exit */
1873 memcpy (data + size, tmp_padding, AV_INPUT_BUFFER_PADDING_SIZE);
1876 if (len == 0 && have_data == 0) {
1877 /* nothing was decoded, this could be because no data was available or
1878 * because we were skipping frames.
1879 * If we have no context we must exit and wait for more data, we keep the
1881 GST_LOG_OBJECT (ffmpegdec, "Decoding didn't return any data, breaking");
1886 /* a decoding error happened, we must break and try again with next data. */
1887 GST_LOG_OBJECT (ffmpegdec, "Decoding error, breaking");
1892 /* prepare for the next round, for codecs with a context we did this
1893 * already when using the parser. */
1899 GST_LOG_OBJECT (ffmpegdec, "Before (while bsize>0). bsize:%d , bdata:%p",
1901 } while (bsize > 0);
1904 GST_DEBUG_OBJECT (ffmpegdec, "Dropping %d bytes of data", bsize);
1906 gst_buffer_unmap (frame->input_buffer, &minfo);
1907 gst_video_codec_frame_unref (frame);
1913 gst_ffmpegviddec_start (GstVideoDecoder * decoder)
1915 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1916 GstFFMpegVidDecClass *oclass;
1918 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
1920 GST_OBJECT_LOCK (ffmpegdec);
1921 gst_ffmpeg_avcodec_close (ffmpegdec->context);
1922 if (avcodec_get_context_defaults3 (ffmpegdec->context, oclass->in_plugin) < 0) {
1923 GST_DEBUG_OBJECT (ffmpegdec, "Failed to set context defaults");
1924 GST_OBJECT_UNLOCK (ffmpegdec);
1927 ffmpegdec->context->opaque = ffmpegdec;
1928 GST_OBJECT_UNLOCK (ffmpegdec);
1934 gst_ffmpegviddec_stop (GstVideoDecoder * decoder)
1936 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1938 GST_OBJECT_LOCK (ffmpegdec);
1939 gst_ffmpegviddec_close (ffmpegdec, FALSE);
1940 GST_OBJECT_UNLOCK (ffmpegdec);
1941 g_free (ffmpegdec->padded);
1942 ffmpegdec->padded = NULL;
1943 ffmpegdec->padded_size = 0;
1944 if (ffmpegdec->input_state)
1945 gst_video_codec_state_unref (ffmpegdec->input_state);
1946 ffmpegdec->input_state = NULL;
1947 if (ffmpegdec->output_state)
1948 gst_video_codec_state_unref (ffmpegdec->output_state);
1949 ffmpegdec->output_state = NULL;
1951 if (ffmpegdec->internal_pool)
1952 gst_object_unref (ffmpegdec->internal_pool);
1953 ffmpegdec->internal_pool = NULL;
1955 ffmpegdec->pic_pix_fmt = 0;
1956 ffmpegdec->pic_width = 0;
1957 ffmpegdec->pic_height = 0;
1958 ffmpegdec->pic_par_n = 0;
1959 ffmpegdec->pic_par_d = 0;
1960 ffmpegdec->pic_interlaced = 0;
1961 ffmpegdec->pic_field_order = 0;
1962 ffmpegdec->pic_field_order_changed = FALSE;
1963 ffmpegdec->ctx_ticks = 0;
1964 ffmpegdec->ctx_time_n = 0;
1965 ffmpegdec->ctx_time_d = 0;
1967 ffmpegdec->pool_width = 0;
1968 ffmpegdec->pool_height = 0;
1969 ffmpegdec->pool_format = 0;
1974 static GstFlowReturn
1975 gst_ffmpegviddec_finish (GstVideoDecoder * decoder)
1977 gst_ffmpegviddec_drain (decoder);
1978 /* note that finish can and should clean up more drastically,
1979 * but drain is also invoked on e.g. packet loss in GAP handling */
1980 gst_ffmpegviddec_flush (decoder);
1986 gst_ffmpegviddec_flush (GstVideoDecoder * decoder)
1988 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1990 if (ffmpegdec->opened) {
1991 GST_LOG_OBJECT (decoder, "flushing buffers");
1992 avcodec_flush_buffers (ffmpegdec->context);
1999 gst_ffmpegviddec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query)
2001 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
2002 GstVideoCodecState *state;
2003 GstBufferPool *pool;
2004 guint size, min, max;
2005 GstStructure *config;
2006 gboolean have_pool, have_videometa, have_alignment, update_pool = FALSE;
2007 GstAllocator *allocator = NULL;
2008 GstAllocationParams params = DEFAULT_ALLOC_PARAM;
2010 have_pool = (gst_query_get_n_allocation_pools (query) != 0);
2012 if (!GST_VIDEO_DECODER_CLASS (parent_class)->decide_allocation (decoder,
2016 state = gst_video_decoder_get_output_state (decoder);
2018 if (gst_query_get_n_allocation_params (query) > 0) {
2019 gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
2020 params.align = MAX (params.align, DEFAULT_STRIDE_ALIGN);
2022 gst_query_add_allocation_param (query, allocator, ¶ms);
2025 gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
2027 /* Don't use pool that can't grow, as we don't know how many buffer we'll
2028 * need, otherwise we may stall */
2029 if (max != 0 && max < REQUIRED_POOL_MAX_BUFFERS) {
2030 gst_object_unref (pool);
2031 pool = gst_video_buffer_pool_new ();
2036 /* if there is an allocator, also drop it, as it might be the reason we
2037 * have this limit. Default will be used */
2039 gst_object_unref (allocator);
2044 config = gst_buffer_pool_get_config (pool);
2045 gst_buffer_pool_config_set_params (config, state->caps, size, min, max);
2046 gst_buffer_pool_config_set_allocator (config, allocator, ¶ms);
2049 gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
2052 gst_buffer_pool_config_add_option (config,
2053 GST_BUFFER_POOL_OPTION_VIDEO_META);
2056 gst_buffer_pool_has_option (pool, GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
2058 /* If we have videometa, we never have to copy */
2059 if (have_videometa && have_pool && have_alignment &&
2060 gst_ffmpegviddec_can_direct_render (ffmpegdec)) {
2061 GstStructure *config_copy = gst_structure_copy (config);
2063 gst_ffmpegvideodec_prepare_dr_pool (ffmpegdec, pool, &state->info,
2066 /* FIXME validate and retry */
2067 if (gst_buffer_pool_set_config (pool, config_copy)) {
2071 gst_buffer_pool_set_active (pool, TRUE);
2072 ret = gst_buffer_pool_acquire_buffer (pool, &tmp, NULL);
2073 if (ret == GST_FLOW_OK) {
2074 GstVideoMeta *vmeta = gst_buffer_get_video_meta (tmp);
2075 gboolean same_stride = TRUE;
2078 for (i = 0; i < vmeta->n_planes; i++) {
2079 if (vmeta->stride[i] != ffmpegdec->stride[i]) {
2080 same_stride = FALSE;
2085 gst_buffer_unref (tmp);
2088 if (ffmpegdec->internal_pool)
2089 gst_object_unref (ffmpegdec->internal_pool);
2090 ffmpegdec->internal_pool = gst_object_ref (pool);
2091 ffmpegdec->pool_info = state->info;
2092 gst_structure_free (config);
2099 if (have_videometa && ffmpegdec->internal_pool
2100 && ffmpegdec->pool_width == state->info.width
2101 && ffmpegdec->pool_height == state->info.height) {
2103 gst_object_unref (pool);
2104 pool = gst_object_ref (ffmpegdec->internal_pool);
2105 gst_structure_free (config);
2110 if (!gst_buffer_pool_set_config (pool, config)) {
2111 gboolean working_pool = FALSE;
2112 config = gst_buffer_pool_get_config (pool);
2114 if (gst_buffer_pool_config_validate_params (config, state->caps, size, min,
2116 working_pool = gst_buffer_pool_set_config (pool, config);
2118 gst_structure_free (config);
2121 if (!working_pool) {
2122 gst_object_unref (pool);
2123 pool = gst_video_buffer_pool_new ();
2124 config = gst_buffer_pool_get_config (pool);
2125 gst_buffer_pool_config_set_params (config, state->caps, size, min, max);
2126 gst_buffer_pool_config_set_allocator (config, NULL, ¶ms);
2127 gst_buffer_pool_set_config (pool, config);
2135 gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
2137 gst_object_unref (pool);
2139 gst_object_unref (allocator);
2140 gst_video_codec_state_unref (state);
2146 gst_ffmpegviddec_propose_allocation (GstVideoDecoder * decoder,
2149 GstAllocationParams params;
2151 gst_allocation_params_init (¶ms);
2152 params.flags = GST_MEMORY_FLAG_ZERO_PADDED;
2153 params.align = DEFAULT_STRIDE_ALIGN;
2154 params.padding = AV_INPUT_BUFFER_PADDING_SIZE;
2155 /* we would like to have some padding so that we don't have to
2156 * memcpy. We don't suggest an allocator. */
2157 gst_query_add_allocation_param (query, NULL, ¶ms);
2159 return GST_VIDEO_DECODER_CLASS (parent_class)->propose_allocation (decoder,
2164 gst_ffmpegviddec_set_property (GObject * object,
2165 guint prop_id, const GValue * value, GParamSpec * pspec)
2167 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) object;
2171 ffmpegdec->lowres = ffmpegdec->context->lowres = g_value_get_enum (value);
2173 case PROP_SKIPFRAME:
2174 ffmpegdec->skip_frame = ffmpegdec->context->skip_frame =
2175 g_value_get_enum (value);
2177 case PROP_DIRECT_RENDERING:
2178 ffmpegdec->direct_rendering = g_value_get_boolean (value);
2181 ffmpegdec->debug_mv = ffmpegdec->context->debug_mv =
2182 g_value_get_boolean (value);
2184 case PROP_MAX_THREADS:
2185 ffmpegdec->max_threads = g_value_get_int (value);
2187 case PROP_OUTPUT_CORRUPT:
2188 ffmpegdec->output_corrupt = g_value_get_boolean (value);
2191 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2197 gst_ffmpegviddec_get_property (GObject * object,
2198 guint prop_id, GValue * value, GParamSpec * pspec)
2200 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) object;
2204 g_value_set_enum (value, ffmpegdec->context->lowres);
2206 case PROP_SKIPFRAME:
2207 g_value_set_enum (value, ffmpegdec->context->skip_frame);
2209 case PROP_DIRECT_RENDERING:
2210 g_value_set_boolean (value, ffmpegdec->direct_rendering);
2213 g_value_set_boolean (value, ffmpegdec->context->debug_mv);
2215 case PROP_MAX_THREADS:
2216 g_value_set_int (value, ffmpegdec->max_threads);
2218 case PROP_OUTPUT_CORRUPT:
2219 g_value_set_boolean (value, ffmpegdec->output_corrupt);
2222 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2228 gst_ffmpegviddec_register (GstPlugin * plugin)
2230 GTypeInfo typeinfo = {
2231 sizeof (GstFFMpegVidDecClass),
2232 (GBaseInitFunc) gst_ffmpegviddec_base_init,
2234 (GClassInitFunc) gst_ffmpegviddec_class_init,
2237 sizeof (GstFFMpegVidDec),
2239 (GInstanceInitFunc) gst_ffmpegviddec_init,
2245 in_plugin = av_codec_next (NULL);
2247 GST_LOG ("Registering decoders");
2253 /* only video decoders */
2254 if (!av_codec_is_decoder (in_plugin)
2255 || in_plugin->type != AVMEDIA_TYPE_VIDEO)
2258 /* no quasi codecs, please */
2259 if (in_plugin->id == AV_CODEC_ID_RAWVIDEO ||
2260 in_plugin->id == AV_CODEC_ID_V210 ||
2261 in_plugin->id == AV_CODEC_ID_V210X ||
2262 in_plugin->id == AV_CODEC_ID_V308 ||
2263 in_plugin->id == AV_CODEC_ID_V408 ||
2264 in_plugin->id == AV_CODEC_ID_V410 ||
2265 in_plugin->id == AV_CODEC_ID_R210
2266 || in_plugin->id == AV_CODEC_ID_AYUV
2267 || in_plugin->id == AV_CODEC_ID_Y41P
2268 || in_plugin->id == AV_CODEC_ID_012V
2269 || in_plugin->id == AV_CODEC_ID_YUV4
2270 #if AV_VERSION_INT (LIBAVCODEC_VERSION_MAJOR, LIBAVCODEC_VERSION_MINOR, LIBAVCODEC_VERSION_MICRO) >= \
2271 AV_VERSION_INT (57,4,0)
2272 || in_plugin->id == AV_CODEC_ID_WRAPPED_AVFRAME
2274 || in_plugin->id == AV_CODEC_ID_ZLIB) {
2278 /* No decoders depending on external libraries (we don't build them, but
2279 * people who build against an external ffmpeg might have them.
2280 * We have native gstreamer plugins for all of those libraries anyway. */
2281 if (!strncmp (in_plugin->name, "lib", 3)) {
2283 ("Not using external library decoder %s. Use the gstreamer-native ones instead.",
2288 /* No vdpau plugins until we can figure out how to properly use them
2289 * outside of ffmpeg. */
2290 if (g_str_has_suffix (in_plugin->name, "_vdpau")) {
2292 ("Ignoring VDPAU decoder %s. We can't handle this outside of ffmpeg",
2297 if (g_str_has_suffix (in_plugin->name, "_xvmc")) {
2299 ("Ignoring XVMC decoder %s. We can't handle this outside of ffmpeg",
2304 if (strstr (in_plugin->name, "vaapi")) {
2306 ("Ignoring VAAPI decoder %s. We can't handle this outside of ffmpeg",
2311 if (g_str_has_suffix (in_plugin->name, "_qsv")) {
2313 ("Ignoring qsv decoder %s. We can't handle this outside of ffmpeg",
2318 if (g_str_has_suffix (in_plugin->name, "_cuvid")) {
2320 ("Ignoring CUVID decoder %s. We can't handle this outside of ffmpeg",
2325 if (g_str_has_suffix (in_plugin->name, "_v4l2m2m")) {
2327 ("Ignoring V4L2 mem-to-mem decoder %s. We can't handle this outside of ffmpeg",
2332 GST_DEBUG ("Trying plugin %s [%s]", in_plugin->name, in_plugin->long_name);
2334 /* no codecs for which we're GUARANTEED to have better alternatives */
2335 /* MPEG1VIDEO : the mpeg2video decoder is preferred */
2336 /* MP1 : Use MP3 for decoding */
2337 /* MP2 : Use MP3 for decoding */
2338 /* Theora: Use libtheora based theoradec */
2339 if (!strcmp (in_plugin->name, "theora") ||
2340 !strcmp (in_plugin->name, "mpeg1video") ||
2341 strstr (in_plugin->name, "crystalhd") != NULL ||
2342 !strcmp (in_plugin->name, "ass") ||
2343 !strcmp (in_plugin->name, "srt") ||
2344 !strcmp (in_plugin->name, "pgssub") ||
2345 !strcmp (in_plugin->name, "dvdsub") ||
2346 !strcmp (in_plugin->name, "dvbsub")) {
2347 GST_LOG ("Ignoring decoder %s", in_plugin->name);
2351 /* construct the type */
2352 if (!strcmp (in_plugin->name, "hevc")) {
2353 plugin_name = g_strdup ("h265");
2355 plugin_name = g_strdup ((gchar *) in_plugin->name);
2357 g_strdelimit (plugin_name, NULL, '_');
2358 type_name = g_strdup_printf ("avdec_%s", plugin_name);
2359 g_free (plugin_name);
2361 type = g_type_from_name (type_name);
2364 /* create the gtype now */
2366 g_type_register_static (GST_TYPE_VIDEO_DECODER, type_name, &typeinfo,
2368 g_type_set_qdata (type, GST_FFDEC_PARAMS_QDATA, (gpointer) in_plugin);
2371 /* (Ronald) MPEG-4 gets a higher priority because it has been well-
2372 * tested and by far outperforms divxdec/xviddec - so we prefer it.
2373 * msmpeg4v3 same, as it outperforms divxdec for divx3 playback.
2374 * VC1/WMV3 are not working and thus unpreferred for now. */
2375 switch (in_plugin->id) {
2376 case AV_CODEC_ID_MPEG1VIDEO:
2377 case AV_CODEC_ID_MPEG2VIDEO:
2378 case AV_CODEC_ID_MPEG4:
2379 case AV_CODEC_ID_MSMPEG4V3:
2380 case AV_CODEC_ID_H264:
2381 case AV_CODEC_ID_HEVC:
2382 case AV_CODEC_ID_RV10:
2383 case AV_CODEC_ID_RV20:
2384 case AV_CODEC_ID_RV30:
2385 case AV_CODEC_ID_RV40:
2386 rank = GST_RANK_PRIMARY;
2388 /* DVVIDEO: we have a good dv decoder, fast on both ppc as well as x86.
2389 * They say libdv's quality is better though. leave as secondary.
2390 * note: if you change this, see the code in gstdv.c in good/ext/dv.
2392 case AV_CODEC_ID_DVVIDEO:
2393 rank = GST_RANK_SECONDARY;
2396 rank = GST_RANK_MARGINAL;
2399 if (!gst_element_register (plugin, type_name, rank, type)) {
2400 g_warning ("Failed to register %s", type_name);
2408 in_plugin = av_codec_next (in_plugin);
2411 GST_LOG ("Finished Registering decoders");