2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
27 #include <libavcodec/avcodec.h>
30 #include <gst/video/video.h>
31 #include <gst/video/gstvideodecoder.h>
32 #include <gst/video/gstvideometa.h>
33 #include <gst/video/gstvideopool.h>
36 #include "gstavcodecmap.h"
37 #include "gstavutils.h"
38 #include "gstavviddec.h"
40 #define MAX_TS_MASK 0xff
42 #define DEFAULT_LOWRES 0
43 #define DEFAULT_SKIPFRAME 0
44 #define DEFAULT_DIRECT_RENDERING TRUE
45 #define DEFAULT_DEBUG_MV FALSE
46 #define DEFAULT_MAX_THREADS 0
47 #define DEFAULT_OUTPUT_CORRUPT TRUE
48 #define REQUIRED_POOL_MAX_BUFFERS 32
49 #define DEFAULT_STRIDE_ALIGN 31
50 #define DEFAULT_ALLOC_PARAM { 0, DEFAULT_STRIDE_ALIGN, 0, 0, }
57 PROP_DIRECT_RENDERING,
64 /* A number of function prototypes are given so we can refer to them later. */
65 static void gst_ffmpegviddec_base_init (GstFFMpegVidDecClass * klass);
66 static void gst_ffmpegviddec_class_init (GstFFMpegVidDecClass * klass);
67 static void gst_ffmpegviddec_init (GstFFMpegVidDec * ffmpegdec);
68 static void gst_ffmpegviddec_finalize (GObject * object);
70 static gboolean gst_ffmpegviddec_set_format (GstVideoDecoder * decoder,
71 GstVideoCodecState * state);
72 static GstFlowReturn gst_ffmpegviddec_handle_frame (GstVideoDecoder * decoder,
73 GstVideoCodecFrame * frame);
74 static gboolean gst_ffmpegviddec_start (GstVideoDecoder * decoder);
75 static gboolean gst_ffmpegviddec_stop (GstVideoDecoder * decoder);
76 static gboolean gst_ffmpegviddec_flush (GstVideoDecoder * decoder);
77 static gboolean gst_ffmpegviddec_decide_allocation (GstVideoDecoder * decoder,
79 static gboolean gst_ffmpegviddec_propose_allocation (GstVideoDecoder * decoder,
82 static void gst_ffmpegviddec_set_property (GObject * object,
83 guint prop_id, const GValue * value, GParamSpec * pspec);
84 static void gst_ffmpegviddec_get_property (GObject * object,
85 guint prop_id, GValue * value, GParamSpec * pspec);
87 static gboolean gst_ffmpegviddec_negotiate (GstFFMpegVidDec * ffmpegdec,
88 AVCodecContext * context, AVFrame * picture);
90 /* some sort of bufferpool handling, but different */
91 static int gst_ffmpegviddec_get_buffer2 (AVCodecContext * context,
92 AVFrame * picture, int flags);
94 static GstFlowReturn gst_ffmpegviddec_finish (GstVideoDecoder * decoder);
95 static GstFlowReturn gst_ffmpegviddec_drain (GstVideoDecoder * decoder);
97 static gboolean picture_changed (GstFFMpegVidDec * ffmpegdec,
99 static gboolean context_changed (GstFFMpegVidDec * ffmpegdec,
100 AVCodecContext * context);
102 #define GST_FFDEC_PARAMS_QDATA g_quark_from_static_string("avdec-params")
104 static GstElementClass *parent_class = NULL;
106 #define GST_FFMPEGVIDDEC_TYPE_LOWRES (gst_ffmpegviddec_lowres_get_type())
108 gst_ffmpegviddec_lowres_get_type (void)
110 static GType ffmpegdec_lowres_type = 0;
112 if (!ffmpegdec_lowres_type) {
113 static const GEnumValue ffmpegdec_lowres[] = {
115 {1, "1", "1/2-size"},
116 {2, "2", "1/4-size"},
120 ffmpegdec_lowres_type =
121 g_enum_register_static ("GstLibAVVidDecLowres", ffmpegdec_lowres);
124 return ffmpegdec_lowres_type;
127 #define GST_FFMPEGVIDDEC_TYPE_SKIPFRAME (gst_ffmpegviddec_skipframe_get_type())
129 gst_ffmpegviddec_skipframe_get_type (void)
131 static GType ffmpegdec_skipframe_type = 0;
133 if (!ffmpegdec_skipframe_type) {
134 static const GEnumValue ffmpegdec_skipframe[] = {
135 {0, "0", "Skip nothing"},
136 {1, "1", "Skip B-frames"},
137 {2, "2", "Skip IDCT/Dequantization"},
138 {5, "5", "Skip everything"},
142 ffmpegdec_skipframe_type =
143 g_enum_register_static ("GstLibAVVidDecSkipFrame", ffmpegdec_skipframe);
146 return ffmpegdec_skipframe_type;
150 gst_ffmpegviddec_base_init (GstFFMpegVidDecClass * klass)
152 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
153 GstPadTemplate *sinktempl, *srctempl;
154 GstCaps *sinkcaps, *srccaps;
156 gchar *longname, *description;
159 (AVCodec *) g_type_get_qdata (G_OBJECT_CLASS_TYPE (klass),
160 GST_FFDEC_PARAMS_QDATA);
161 g_assert (in_plugin != NULL);
163 /* construct the element details struct */
164 longname = g_strdup_printf ("libav %s decoder", in_plugin->long_name);
165 description = g_strdup_printf ("libav %s decoder", in_plugin->name);
166 gst_element_class_set_metadata (element_class, longname,
167 "Codec/Decoder/Video", description,
168 "Wim Taymans <wim.taymans@gmail.com>, "
169 "Ronald Bultje <rbultje@ronald.bitfreak.net>, "
170 "Edward Hervey <bilboed@bilboed.com>");
172 g_free (description);
175 sinkcaps = gst_ffmpeg_codecid_to_caps (in_plugin->id, NULL, FALSE);
177 GST_DEBUG ("Couldn't get sink caps for decoder '%s'", in_plugin->name);
178 sinkcaps = gst_caps_new_empty_simple ("unknown/unknown");
180 srccaps = gst_ffmpeg_codectype_to_video_caps (NULL,
181 in_plugin->id, FALSE, in_plugin);
183 GST_DEBUG ("Couldn't get source caps for decoder '%s'", in_plugin->name);
184 srccaps = gst_caps_from_string ("video/x-raw");
188 sinktempl = gst_pad_template_new ("sink", GST_PAD_SINK,
189 GST_PAD_ALWAYS, sinkcaps);
190 srctempl = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, srccaps);
192 gst_element_class_add_pad_template (element_class, srctempl);
193 gst_element_class_add_pad_template (element_class, sinktempl);
195 gst_caps_unref (sinkcaps);
196 gst_caps_unref (srccaps);
198 klass->in_plugin = in_plugin;
202 gst_ffmpegviddec_class_init (GstFFMpegVidDecClass * klass)
204 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
205 GstVideoDecoderClass *viddec_class = GST_VIDEO_DECODER_CLASS (klass);
208 parent_class = g_type_class_peek_parent (klass);
210 gobject_class->finalize = gst_ffmpegviddec_finalize;
212 gobject_class->set_property = gst_ffmpegviddec_set_property;
213 gobject_class->get_property = gst_ffmpegviddec_get_property;
215 g_object_class_install_property (gobject_class, PROP_SKIPFRAME,
216 g_param_spec_enum ("skip-frame", "Skip frames",
217 "Which types of frames to skip during decoding",
218 GST_FFMPEGVIDDEC_TYPE_SKIPFRAME, 0,
219 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
220 g_object_class_install_property (gobject_class, PROP_LOWRES,
221 g_param_spec_enum ("lowres", "Low resolution",
222 "At which resolution to decode images",
223 GST_FFMPEGVIDDEC_TYPE_LOWRES, 0,
224 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
225 g_object_class_install_property (gobject_class, PROP_DIRECT_RENDERING,
226 g_param_spec_boolean ("direct-rendering", "Direct Rendering",
227 "Enable direct rendering", DEFAULT_DIRECT_RENDERING,
228 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
229 g_object_class_install_property (gobject_class, PROP_DEBUG_MV,
230 g_param_spec_boolean ("debug-mv", "Debug motion vectors",
231 "Whether libav should print motion vectors on top of the image",
232 DEFAULT_DEBUG_MV, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
233 g_object_class_install_property (gobject_class, PROP_OUTPUT_CORRUPT,
234 g_param_spec_boolean ("output-corrupt", "Output corrupt buffers",
235 "Whether libav should output frames even if corrupted",
236 DEFAULT_OUTPUT_CORRUPT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
238 caps = klass->in_plugin->capabilities;
239 if (caps & (CODEC_CAP_FRAME_THREADS | CODEC_CAP_SLICE_THREADS)) {
240 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MAX_THREADS,
241 g_param_spec_int ("max-threads", "Maximum decode threads",
242 "Maximum number of worker threads to spawn. (0 = auto)",
243 0, G_MAXINT, DEFAULT_MAX_THREADS,
244 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
247 viddec_class->set_format = gst_ffmpegviddec_set_format;
248 viddec_class->handle_frame = gst_ffmpegviddec_handle_frame;
249 viddec_class->start = gst_ffmpegviddec_start;
250 viddec_class->stop = gst_ffmpegviddec_stop;
251 viddec_class->flush = gst_ffmpegviddec_flush;
252 viddec_class->finish = gst_ffmpegviddec_finish;
253 viddec_class->drain = gst_ffmpegviddec_drain;
254 viddec_class->decide_allocation = gst_ffmpegviddec_decide_allocation;
255 viddec_class->propose_allocation = gst_ffmpegviddec_propose_allocation;
259 gst_ffmpegviddec_init (GstFFMpegVidDec * ffmpegdec)
261 GstFFMpegVidDecClass *klass =
262 (GstFFMpegVidDecClass *) G_OBJECT_GET_CLASS (ffmpegdec);
264 /* some ffmpeg data */
265 ffmpegdec->context = avcodec_alloc_context3 (klass->in_plugin);
266 ffmpegdec->context->opaque = ffmpegdec;
267 ffmpegdec->picture = av_frame_alloc ();
268 ffmpegdec->opened = FALSE;
269 ffmpegdec->skip_frame = ffmpegdec->lowres = 0;
270 ffmpegdec->direct_rendering = DEFAULT_DIRECT_RENDERING;
271 ffmpegdec->debug_mv = DEFAULT_DEBUG_MV;
272 ffmpegdec->max_threads = DEFAULT_MAX_THREADS;
273 ffmpegdec->output_corrupt = DEFAULT_OUTPUT_CORRUPT;
275 GST_PAD_SET_ACCEPT_TEMPLATE (GST_VIDEO_DECODER_SINK_PAD (ffmpegdec));
276 gst_video_decoder_set_use_default_pad_acceptcaps (GST_VIDEO_DECODER_CAST
279 gst_video_decoder_set_needs_format (GST_VIDEO_DECODER (ffmpegdec), TRUE);
283 gst_ffmpegviddec_finalize (GObject * object)
285 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) object;
287 av_frame_free (&ffmpegdec->picture);
289 if (ffmpegdec->context != NULL) {
290 gst_ffmpeg_avcodec_close (ffmpegdec->context);
291 av_free (ffmpegdec->context);
292 ffmpegdec->context = NULL;
295 G_OBJECT_CLASS (parent_class)->finalize (object);
299 gst_ffmpegviddec_context_set_flags (AVCodecContext * context, guint flags,
302 g_return_if_fail (context != NULL);
305 context->flags |= flags;
307 context->flags &= ~flags;
312 gst_ffmpegviddec_close (GstFFMpegVidDec * ffmpegdec, gboolean reset)
314 GstFFMpegVidDecClass *oclass;
317 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
319 GST_LOG_OBJECT (ffmpegdec, "closing ffmpeg codec");
321 gst_caps_replace (&ffmpegdec->last_caps, NULL);
323 gst_ffmpeg_avcodec_close (ffmpegdec->context);
324 ffmpegdec->opened = FALSE;
326 for (i = 0; i < G_N_ELEMENTS (ffmpegdec->stride); i++)
327 ffmpegdec->stride[i] = -1;
329 gst_buffer_replace (&ffmpegdec->palette, NULL);
331 if (ffmpegdec->context->extradata) {
332 av_free (ffmpegdec->context->extradata);
333 ffmpegdec->context->extradata = NULL;
336 if (avcodec_get_context_defaults3 (ffmpegdec->context,
337 oclass->in_plugin) < 0) {
338 GST_DEBUG_OBJECT (ffmpegdec, "Failed to set context defaults");
341 ffmpegdec->context->opaque = ffmpegdec;
348 gst_ffmpegviddec_open (GstFFMpegVidDec * ffmpegdec)
350 GstFFMpegVidDecClass *oclass;
353 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
355 if (gst_ffmpeg_avcodec_open (ffmpegdec->context, oclass->in_plugin) < 0)
358 for (i = 0; i < G_N_ELEMENTS (ffmpegdec->stride); i++)
359 ffmpegdec->stride[i] = -1;
361 ffmpegdec->opened = TRUE;
363 GST_LOG_OBJECT (ffmpegdec, "Opened libav codec %s, id %d",
364 oclass->in_plugin->name, oclass->in_plugin->id);
366 gst_ffmpegviddec_context_set_flags (ffmpegdec->context,
367 CODEC_FLAG_OUTPUT_CORRUPT, ffmpegdec->output_corrupt);
374 gst_ffmpegviddec_close (ffmpegdec, TRUE);
375 GST_DEBUG_OBJECT (ffmpegdec, "avdec_%s: Failed to open libav codec",
376 oclass->in_plugin->name);
382 gst_ffmpegviddec_get_palette (GstFFMpegVidDec * ffmpegdec,
383 GstVideoCodecState * state)
385 GstStructure *str = gst_caps_get_structure (state->caps, 0);
386 const GValue *palette_v;
389 /* do we have a palette? */
390 if ((palette_v = gst_structure_get_value (str, "palette_data"))) {
391 palette = gst_value_get_buffer (palette_v);
392 GST_DEBUG ("got palette data %p", palette);
393 if (gst_buffer_get_size (palette) >= AVPALETTE_SIZE) {
394 gst_buffer_replace (&ffmpegdec->palette, palette);
401 gst_ffmpegviddec_set_format (GstVideoDecoder * decoder,
402 GstVideoCodecState * state)
404 GstFFMpegVidDec *ffmpegdec;
405 GstFFMpegVidDecClass *oclass;
406 GstClockTime latency = GST_CLOCK_TIME_NONE;
407 gboolean ret = FALSE;
409 ffmpegdec = (GstFFMpegVidDec *) decoder;
410 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
412 if (ffmpegdec->last_caps != NULL &&
413 gst_caps_is_equal (ffmpegdec->last_caps, state->caps)) {
417 GST_DEBUG_OBJECT (ffmpegdec, "setcaps called");
419 GST_OBJECT_LOCK (ffmpegdec);
420 /* stupid check for VC1 */
421 if ((oclass->in_plugin->id == AV_CODEC_ID_WMV3) ||
422 (oclass->in_plugin->id == AV_CODEC_ID_VC1))
423 oclass->in_plugin->id = gst_ffmpeg_caps_to_codecid (state->caps, NULL);
425 /* close old session */
426 if (ffmpegdec->opened) {
427 GST_OBJECT_UNLOCK (ffmpegdec);
428 gst_ffmpegviddec_finish (decoder);
429 GST_OBJECT_LOCK (ffmpegdec);
430 if (!gst_ffmpegviddec_close (ffmpegdec, TRUE)) {
431 GST_OBJECT_UNLOCK (ffmpegdec);
434 ffmpegdec->pic_pix_fmt = 0;
435 ffmpegdec->pic_width = 0;
436 ffmpegdec->pic_height = 0;
437 ffmpegdec->pic_par_n = 0;
438 ffmpegdec->pic_par_d = 0;
439 ffmpegdec->pic_interlaced = 0;
440 ffmpegdec->pic_field_order = 0;
441 ffmpegdec->pic_field_order_changed = FALSE;
442 ffmpegdec->ctx_ticks = 0;
443 ffmpegdec->ctx_time_n = 0;
444 ffmpegdec->ctx_time_d = 0;
447 gst_caps_replace (&ffmpegdec->last_caps, state->caps);
449 /* set buffer functions */
450 ffmpegdec->context->get_buffer2 = gst_ffmpegviddec_get_buffer2;
451 ffmpegdec->context->draw_horiz_band = NULL;
453 /* reset coded_width/_height to prevent it being reused from last time when
454 * the codec is opened again, causing a mismatch and possible
455 * segfault/corruption. (Common scenario when renegotiating caps) */
456 ffmpegdec->context->coded_width = 0;
457 ffmpegdec->context->coded_height = 0;
459 GST_LOG_OBJECT (ffmpegdec, "size %dx%d", ffmpegdec->context->width,
460 ffmpegdec->context->height);
462 /* FIXME : Create a method that takes GstVideoCodecState instead */
463 /* get size and so */
464 gst_ffmpeg_caps_with_codecid (oclass->in_plugin->id,
465 oclass->in_plugin->type, state->caps, ffmpegdec->context);
467 GST_LOG_OBJECT (ffmpegdec, "size after %dx%d", ffmpegdec->context->width,
468 ffmpegdec->context->height);
470 gst_ffmpegviddec_get_palette (ffmpegdec, state);
472 if (!ffmpegdec->context->time_base.den || !ffmpegdec->context->time_base.num) {
473 GST_DEBUG_OBJECT (ffmpegdec, "forcing 25/1 framerate");
474 ffmpegdec->context->time_base.num = 1;
475 ffmpegdec->context->time_base.den = 25;
478 /* workaround encoder bugs */
479 ffmpegdec->context->workaround_bugs |= FF_BUG_AUTODETECT;
480 ffmpegdec->context->err_recognition = 1;
483 ffmpegdec->context->lowres = ffmpegdec->lowres;
484 ffmpegdec->context->skip_frame = ffmpegdec->skip_frame;
486 /* ffmpeg can draw motion vectors on top of the image (not every decoder
488 ffmpegdec->context->debug_mv = ffmpegdec->debug_mv;
494 if (ffmpegdec->max_threads == 0) {
495 if (!(oclass->in_plugin->capabilities & CODEC_CAP_AUTO_THREADS))
496 ffmpegdec->context->thread_count = gst_ffmpeg_auto_max_threads ();
498 ffmpegdec->context->thread_count = 0;
500 ffmpegdec->context->thread_count = ffmpegdec->max_threads;
502 query = gst_query_new_latency ();
504 /* Check if upstream is live. If it isn't we can enable frame based
505 * threading, which is adding latency */
506 if (gst_pad_peer_query (GST_VIDEO_DECODER_SINK_PAD (ffmpegdec), query)) {
507 gst_query_parse_latency (query, &is_live, NULL, NULL);
509 gst_query_unref (query);
512 ffmpegdec->context->thread_type = FF_THREAD_SLICE;
514 ffmpegdec->context->thread_type = FF_THREAD_SLICE | FF_THREAD_FRAME;
517 /* open codec - we don't select an output pix_fmt yet,
518 * simply because we don't know! We only get it
519 * during playback... */
520 if (!gst_ffmpegviddec_open (ffmpegdec))
523 if (ffmpegdec->input_state)
524 gst_video_codec_state_unref (ffmpegdec->input_state);
525 ffmpegdec->input_state = gst_video_codec_state_ref (state);
527 if (ffmpegdec->input_state->info.fps_n) {
528 GstVideoInfo *info = &ffmpegdec->input_state->info;
529 latency = gst_util_uint64_scale_ceil (
530 (ffmpegdec->context->has_b_frames) * GST_SECOND, info->fps_d,
537 GST_OBJECT_UNLOCK (ffmpegdec);
539 if (GST_CLOCK_TIME_IS_VALID (latency))
540 gst_video_decoder_set_latency (decoder, latency, latency);
547 GST_DEBUG_OBJECT (ffmpegdec, "Failed to open");
554 GstFFMpegVidDec *ffmpegdec;
555 GstVideoCodecFrame *frame;
557 GstVideoFrame vframe;
559 AVBufferRef *avbuffer;
560 } GstFFMpegVidDecVideoFrame;
562 static GstFFMpegVidDecVideoFrame *
563 gst_ffmpegviddec_video_frame_new (GstFFMpegVidDec * ffmpegdec,
564 GstVideoCodecFrame * frame)
566 GstFFMpegVidDecVideoFrame *dframe;
568 dframe = g_slice_new0 (GstFFMpegVidDecVideoFrame);
569 dframe->ffmpegdec = ffmpegdec;
570 dframe->frame = frame;
572 GST_DEBUG_OBJECT (ffmpegdec, "new video frame %p", dframe);
578 gst_ffmpegviddec_video_frame_free (GstFFMpegVidDec * ffmpegdec,
579 GstFFMpegVidDecVideoFrame * frame)
581 GST_DEBUG_OBJECT (ffmpegdec, "free video frame %p", frame);
584 gst_video_frame_unmap (&frame->vframe);
585 gst_video_decoder_release_frame (GST_VIDEO_DECODER (ffmpegdec), frame->frame);
586 gst_buffer_replace (&frame->buffer, NULL);
587 if (frame->avbuffer) {
588 av_buffer_unref (&frame->avbuffer);
590 g_slice_free (GstFFMpegVidDecVideoFrame, frame);
594 dummy_free_buffer (void *opaque, uint8_t * data)
596 GstFFMpegVidDecVideoFrame *frame = opaque;
598 gst_ffmpegviddec_video_frame_free (frame->ffmpegdec, frame);
601 /* This function prepares the pool configuration for direct rendering. To use
602 * this method, the codec should support direct rendering and the pool should
603 * support video meta and video alignment */
605 gst_ffmpegvideodec_prepare_dr_pool (GstFFMpegVidDec * ffmpegdec,
606 GstBufferPool * pool, GstVideoInfo * info, GstStructure * config)
608 GstAllocationParams params;
609 GstVideoAlignment align;
610 GstAllocator *allocator = NULL;
612 gint linesize_align[4];
617 width = GST_VIDEO_INFO_WIDTH (info);
618 height = GST_VIDEO_INFO_HEIGHT (info);
620 /* let ffmpeg find the alignment and padding */
621 avcodec_align_dimensions2 (ffmpegdec->context, &width, &height,
624 if (ffmpegdec->context->flags & CODEC_FLAG_EMU_EDGE)
627 edge = avcodec_get_edge_width ();
629 /* increase the size for the padding */
633 align.padding_top = edge;
634 align.padding_left = edge;
635 align.padding_right = width - GST_VIDEO_INFO_WIDTH (info) - edge;
636 align.padding_bottom = height - GST_VIDEO_INFO_HEIGHT (info) - edge;
638 /* add extra padding to match libav buffer allocation sizes */
639 align.padding_bottom++;
641 gst_buffer_pool_config_get_allocator (config, &allocator, ¶ms);
643 max_align = DEFAULT_STRIDE_ALIGN;
644 max_align |= params.align;
646 for (i = 0; i < GST_VIDEO_MAX_PLANES; i++) {
647 if (linesize_align[i] > 0)
648 max_align |= linesize_align[i] - 1;
651 for (i = 0; i < GST_VIDEO_MAX_PLANES; i++)
652 align.stride_align[i] = max_align;
654 params.align = max_align;
656 gst_buffer_pool_config_set_allocator (config, allocator, ¶ms);
658 GST_DEBUG_OBJECT (ffmpegdec, "aligned dimension %dx%d -> %dx%d "
659 "padding t:%u l:%u r:%u b:%u, stride_align %d:%d:%d:%d",
660 GST_VIDEO_INFO_WIDTH (info),
661 GST_VIDEO_INFO_HEIGHT (info), width, height, align.padding_top,
662 align.padding_left, align.padding_right, align.padding_bottom,
663 align.stride_align[0], align.stride_align[1], align.stride_align[2],
664 align.stride_align[3]);
666 gst_buffer_pool_config_add_option (config,
667 GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
668 gst_buffer_pool_config_set_video_alignment (config, &align);
672 gst_ffmpegviddec_ensure_internal_pool (GstFFMpegVidDec * ffmpegdec,
675 GstAllocationParams params = DEFAULT_ALLOC_PARAM;
677 GstVideoFormat format;
679 GstStructure *config;
682 if (ffmpegdec->internal_pool != NULL &&
683 ffmpegdec->pool_width == picture->width &&
684 ffmpegdec->pool_height == picture->height &&
685 ffmpegdec->pool_format == picture->format)
688 GST_DEBUG_OBJECT (ffmpegdec, "Updating internal pool (%i, %i)",
689 picture->width, picture->height);
691 format = gst_ffmpeg_pixfmt_to_videoformat (picture->format);
692 gst_video_info_set_format (&info, format, picture->width, picture->height);
694 for (i = 0; i < G_N_ELEMENTS (ffmpegdec->stride); i++)
695 ffmpegdec->stride[i] = -1;
697 if (ffmpegdec->internal_pool)
698 gst_object_unref (ffmpegdec->internal_pool);
700 ffmpegdec->internal_pool = gst_video_buffer_pool_new ();
701 config = gst_buffer_pool_get_config (ffmpegdec->internal_pool);
703 caps = gst_video_info_to_caps (&info);
704 gst_buffer_pool_config_set_params (config, caps, info.size, 2, 0);
705 gst_buffer_pool_config_set_allocator (config, NULL, ¶ms);
706 gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
708 gst_ffmpegvideodec_prepare_dr_pool (ffmpegdec,
709 ffmpegdec->internal_pool, &info, config);
710 /* generic video pool never fails */
711 gst_buffer_pool_set_config (ffmpegdec->internal_pool, config);
712 gst_caps_unref (caps);
714 gst_buffer_pool_set_active (ffmpegdec->internal_pool, TRUE);
716 /* Remember pool size so we can detect changes */
717 ffmpegdec->pool_width = picture->width;
718 ffmpegdec->pool_height = picture->height;
719 ffmpegdec->pool_format = picture->format;
720 ffmpegdec->pool_info = info;
724 gst_ffmpegviddec_can_direct_render (GstFFMpegVidDec * ffmpegdec)
726 GstFFMpegVidDecClass *oclass;
728 if (!ffmpegdec->direct_rendering)
731 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
732 return ((oclass->in_plugin->capabilities & CODEC_CAP_DR1) == CODEC_CAP_DR1);
735 /* called when ffmpeg wants us to allocate a buffer to write the decoded frame
736 * into. We try to give it memory from our pool */
738 gst_ffmpegviddec_get_buffer2 (AVCodecContext * context, AVFrame * picture,
741 GstVideoCodecFrame *frame;
742 GstFFMpegVidDecVideoFrame *dframe;
743 GstFFMpegVidDec *ffmpegdec;
747 ffmpegdec = (GstFFMpegVidDec *) context->opaque;
749 GST_DEBUG_OBJECT (ffmpegdec, "getting buffer picture %p", picture);
751 /* apply the last info we have seen to this picture, when we get the
752 * picture back from ffmpeg we can use this to correctly timestamp the output
754 GST_DEBUG_OBJECT (ffmpegdec, "opaque value SN %d",
755 (gint32) picture->reordered_opaque);
758 gst_video_decoder_get_frame (GST_VIDEO_DECODER (ffmpegdec),
759 picture->reordered_opaque);
760 if (G_UNLIKELY (frame == NULL))
763 /* now it has a buffer allocated, so it is real and will also
765 GST_VIDEO_CODEC_FRAME_FLAG_UNSET (frame,
766 GST_VIDEO_CODEC_FRAME_FLAG_DECODE_ONLY);
768 if (G_UNLIKELY (frame->output_buffer != NULL))
769 goto duplicate_frame;
771 /* GstFFMpegVidDecVideoFrame receives the frame ref */
772 if (picture->opaque) {
773 dframe = picture->opaque;
774 dframe->frame = frame;
776 picture->opaque = dframe =
777 gst_ffmpegviddec_video_frame_new (ffmpegdec, frame);
780 GST_DEBUG_OBJECT (ffmpegdec, "storing opaque %p", dframe);
782 if (!gst_ffmpegviddec_can_direct_render (ffmpegdec))
785 gst_ffmpegviddec_ensure_internal_pool (ffmpegdec, picture);
787 ret = gst_buffer_pool_acquire_buffer (ffmpegdec->internal_pool,
788 &frame->output_buffer, NULL);
789 if (ret != GST_FLOW_OK)
792 /* piggy-backed alloc'ed on the frame,
793 * and there was much rejoicing and we are grateful.
794 * Now take away buffer from frame, we will give it back later when decoded.
795 * This allows multiple request for a buffer per frame; unusual but possible. */
796 gst_buffer_replace (&dframe->buffer, frame->output_buffer);
797 gst_buffer_replace (&frame->output_buffer, NULL);
800 if (!gst_video_frame_map (&dframe->vframe, &ffmpegdec->pool_info,
801 dframe->buffer, GST_MAP_READWRITE))
803 dframe->mapped = TRUE;
805 for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
806 if (c < GST_VIDEO_INFO_N_PLANES (&ffmpegdec->pool_info)) {
807 picture->data[c] = GST_VIDEO_FRAME_PLANE_DATA (&dframe->vframe, c);
808 picture->linesize[c] = GST_VIDEO_FRAME_PLANE_STRIDE (&dframe->vframe, c);
810 if (ffmpegdec->stride[c] == -1)
811 ffmpegdec->stride[c] = picture->linesize[c];
813 /* libav does not allow stride changes, decide allocation should check
814 * before replacing the internal pool with a downstream pool.
815 * https://bugzilla.gnome.org/show_bug.cgi?id=704769
816 * https://bugzilla.libav.org/show_bug.cgi?id=556
818 g_assert (picture->linesize[c] == ffmpegdec->stride[c]);
820 picture->data[c] = NULL;
821 picture->linesize[c] = 0;
823 GST_LOG_OBJECT (ffmpegdec, "linesize %d, data %p", picture->linesize[c],
827 picture->buf[0] = av_buffer_create (NULL, 0, dummy_free_buffer, dframe, 0);
829 GST_LOG_OBJECT (ffmpegdec, "returned frame %p", dframe->buffer);
836 int ret = avcodec_default_get_buffer2 (context, picture, flags);
838 GST_LOG_OBJECT (ffmpegdec, "direct rendering disabled, fallback alloc");
840 for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
841 ffmpegdec->stride[c] = picture->linesize[c];
843 /* Wrap our buffer around the default one to be able to have a callback
844 * when our data can be freed. Just putting our data into the first free
845 * buffer might not work if there are too many allocated already
847 if (picture->buf[0]) {
848 dframe->avbuffer = picture->buf[0];
850 av_buffer_create (picture->buf[0]->data, picture->buf[0]->size,
851 dummy_free_buffer, dframe, 0);
854 av_buffer_create (NULL, 0, dummy_free_buffer, dframe, 0);
861 GST_ELEMENT_ERROR (ffmpegdec, RESOURCE, FAILED,
862 ("Unable to allocate memory"),
863 ("The downstream pool failed to allocated buffer."));
868 GST_ELEMENT_ERROR (ffmpegdec, RESOURCE, OPEN_READ_WRITE,
869 ("Cannot access memory for read and write operation."),
870 ("The video memory allocated from downstream pool could not mapped for"
876 GST_WARNING_OBJECT (ffmpegdec, "already alloc'ed output buffer for frame");
877 gst_video_codec_frame_unref (frame);
882 GST_WARNING_OBJECT (ffmpegdec, "Couldn't get codec frame !");
888 picture_changed (GstFFMpegVidDec * ffmpegdec, AVFrame * picture)
890 gint pic_field_order = 0;
892 if (picture->interlaced_frame) {
893 if (picture->repeat_pict)
894 pic_field_order |= GST_VIDEO_BUFFER_FLAG_RFF;
895 if (picture->top_field_first)
896 pic_field_order |= GST_VIDEO_BUFFER_FLAG_TFF;
899 return !(ffmpegdec->pic_width == picture->width
900 && ffmpegdec->pic_height == picture->height
901 && ffmpegdec->pic_pix_fmt == picture->format
902 && ffmpegdec->pic_par_n == picture->sample_aspect_ratio.num
903 && ffmpegdec->pic_par_d == picture->sample_aspect_ratio.den
904 && ffmpegdec->pic_interlaced == picture->interlaced_frame
905 && ffmpegdec->pic_field_order == pic_field_order);
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;
950 /* Remember if we have interlaced content and the field order changed
951 * at least once. If that happens, we must be interlace-mode=mixed
953 if (ffmpegdec->pic_field_order_changed ||
954 (ffmpegdec->pic_field_order != pic_field_order &&
955 ffmpegdec->pic_interlaced))
956 ffmpegdec->pic_field_order_changed = TRUE;
958 ffmpegdec->pic_field_order = pic_field_order;
959 ffmpegdec->pic_interlaced = picture->interlaced_frame;
961 if (!ffmpegdec->pic_interlaced)
962 ffmpegdec->pic_field_order_changed = FALSE;
964 ffmpegdec->ctx_ticks = context->ticks_per_frame;
965 ffmpegdec->ctx_time_n = context->time_base.num;
966 ffmpegdec->ctx_time_d = context->time_base.den;
972 gst_ffmpegviddec_update_par (GstFFMpegVidDec * ffmpegdec,
973 GstVideoInfo * in_info, GstVideoInfo * out_info)
975 gboolean demuxer_par_set = FALSE;
976 gboolean decoder_par_set = FALSE;
977 gint demuxer_num = 1, demuxer_denom = 1;
978 gint decoder_num = 1, decoder_denom = 1;
980 if (in_info->par_n && in_info->par_d) {
981 demuxer_num = in_info->par_n;
982 demuxer_denom = in_info->par_d;
983 demuxer_par_set = TRUE;
984 GST_DEBUG_OBJECT (ffmpegdec, "Demuxer PAR: %d:%d", demuxer_num,
988 if (ffmpegdec->pic_par_n && ffmpegdec->pic_par_d) {
989 decoder_num = ffmpegdec->pic_par_n;
990 decoder_denom = ffmpegdec->pic_par_d;
991 decoder_par_set = TRUE;
992 GST_DEBUG_OBJECT (ffmpegdec, "Decoder PAR: %d:%d", decoder_num,
996 if (!demuxer_par_set && !decoder_par_set)
999 if (demuxer_par_set && !decoder_par_set)
1000 goto use_demuxer_par;
1002 if (decoder_par_set && !demuxer_par_set)
1003 goto use_decoder_par;
1005 /* Both the demuxer and the decoder provide a PAR. If one of
1006 * the two PARs is 1:1 and the other one is not, use the one
1007 * that is not 1:1. */
1008 if (demuxer_num == demuxer_denom && decoder_num != decoder_denom)
1009 goto use_decoder_par;
1011 if (decoder_num == decoder_denom && demuxer_num != demuxer_denom)
1012 goto use_demuxer_par;
1014 /* Both PARs are non-1:1, so use the PAR provided by the demuxer */
1015 goto use_demuxer_par;
1019 GST_DEBUG_OBJECT (ffmpegdec,
1020 "Setting decoder provided pixel-aspect-ratio of %u:%u", decoder_num,
1022 out_info->par_n = decoder_num;
1023 out_info->par_d = decoder_denom;
1028 GST_DEBUG_OBJECT (ffmpegdec,
1029 "Setting demuxer provided pixel-aspect-ratio of %u:%u", demuxer_num,
1031 out_info->par_n = demuxer_num;
1032 out_info->par_d = demuxer_denom;
1037 GST_DEBUG_OBJECT (ffmpegdec,
1038 "Neither demuxer nor codec provide a pixel-aspect-ratio");
1039 out_info->par_n = 1;
1040 out_info->par_d = 1;
1046 gst_ffmpegviddec_negotiate (GstFFMpegVidDec * ffmpegdec,
1047 AVCodecContext * context, AVFrame * picture)
1050 GstVideoInfo *in_info, *out_info;
1051 GstVideoCodecState *output_state;
1053 GstClockTime latency;
1056 if (!update_video_context (ffmpegdec, context, picture))
1059 fmt = gst_ffmpeg_pixfmt_to_videoformat (ffmpegdec->pic_pix_fmt);
1060 if (G_UNLIKELY (fmt == GST_VIDEO_FORMAT_UNKNOWN))
1061 goto unknown_format;
1064 gst_video_decoder_set_output_state (GST_VIDEO_DECODER (ffmpegdec), fmt,
1065 ffmpegdec->pic_width, ffmpegdec->pic_height, ffmpegdec->input_state);
1066 if (ffmpegdec->output_state)
1067 gst_video_codec_state_unref (ffmpegdec->output_state);
1068 ffmpegdec->output_state = output_state;
1070 in_info = &ffmpegdec->input_state->info;
1071 out_info = &ffmpegdec->output_state->info;
1073 /* set the interlaced flag */
1074 in_s = gst_caps_get_structure (ffmpegdec->input_state->caps, 0);
1076 if (!gst_structure_has_field (in_s, "interlace-mode")) {
1077 if (ffmpegdec->pic_interlaced) {
1078 if (ffmpegdec->pic_field_order_changed ||
1079 (ffmpegdec->pic_field_order & GST_VIDEO_BUFFER_FLAG_RFF)) {
1080 out_info->interlace_mode = GST_VIDEO_INTERLACE_MODE_MIXED;
1082 out_info->interlace_mode = GST_VIDEO_INTERLACE_MODE_INTERLEAVED;
1083 if ((ffmpegdec->pic_field_order & GST_VIDEO_BUFFER_FLAG_TFF))
1084 GST_VIDEO_INFO_FIELD_ORDER (out_info) =
1085 GST_VIDEO_FIELD_ORDER_TOP_FIELD_FIRST;
1087 GST_VIDEO_INFO_FIELD_ORDER (out_info) =
1088 GST_VIDEO_FIELD_ORDER_BOTTOM_FIELD_FIRST;
1091 out_info->interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
1095 if (!gst_structure_has_field (in_s, "chroma-site")) {
1096 switch (context->chroma_sample_location) {
1097 case AVCHROMA_LOC_LEFT:
1098 out_info->chroma_site = GST_VIDEO_CHROMA_SITE_MPEG2;
1100 case AVCHROMA_LOC_CENTER:
1101 out_info->chroma_site = GST_VIDEO_CHROMA_SITE_JPEG;
1103 case AVCHROMA_LOC_TOPLEFT:
1104 out_info->chroma_site = GST_VIDEO_CHROMA_SITE_DV;
1106 case AVCHROMA_LOC_TOP:
1107 out_info->chroma_site = GST_VIDEO_CHROMA_SITE_V_COSITED;
1114 if (!gst_structure_has_field (in_s, "colorimetry")
1115 || in_info->colorimetry.primaries == GST_VIDEO_COLOR_PRIMARIES_UNKNOWN) {
1116 switch (context->color_primaries) {
1117 case AVCOL_PRI_BT709:
1118 out_info->colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_BT709;
1120 case AVCOL_PRI_BT470M:
1121 out_info->colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_BT470M;
1123 case AVCOL_PRI_BT470BG:
1124 out_info->colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_BT470BG;
1126 case AVCOL_PRI_SMPTE170M:
1127 out_info->colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_SMPTE170M;
1129 case AVCOL_PRI_SMPTE240M:
1130 out_info->colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_SMPTE240M;
1132 case AVCOL_PRI_FILM:
1133 out_info->colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_FILM;
1135 case AVCOL_PRI_BT2020:
1136 out_info->colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_BT2020;
1143 if (!gst_structure_has_field (in_s, "colorimetry")
1144 || in_info->colorimetry.transfer == GST_VIDEO_TRANSFER_UNKNOWN) {
1145 switch (context->color_trc) {
1146 case AVCOL_TRC_BT2020_10:
1147 case AVCOL_TRC_BT709:
1148 case AVCOL_TRC_SMPTE170M:
1149 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_BT709;
1151 case AVCOL_TRC_GAMMA22:
1152 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_GAMMA22;
1154 case AVCOL_TRC_GAMMA28:
1155 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_GAMMA28;
1157 case AVCOL_TRC_SMPTE240M:
1158 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_SMPTE240M;
1160 case AVCOL_TRC_LINEAR:
1161 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_GAMMA10;
1164 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_LOG100;
1166 case AVCOL_TRC_LOG_SQRT:
1167 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_LOG316;
1169 case AVCOL_TRC_BT2020_12:
1170 out_info->colorimetry.transfer = GST_VIDEO_TRANSFER_BT2020_12;
1177 if (!gst_structure_has_field (in_s, "colorimetry")
1178 || in_info->colorimetry.matrix == GST_VIDEO_COLOR_MATRIX_UNKNOWN) {
1179 switch (context->colorspace) {
1181 out_info->colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_RGB;
1183 case AVCOL_SPC_BT709:
1184 out_info->colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_BT709;
1187 out_info->colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_FCC;
1189 case AVCOL_SPC_BT470BG:
1190 case AVCOL_SPC_SMPTE170M:
1191 out_info->colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_BT601;
1193 case AVCOL_SPC_SMPTE240M:
1194 out_info->colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_SMPTE240M;
1196 case AVCOL_SPC_BT2020_NCL:
1197 out_info->colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_BT2020;
1204 if (!gst_structure_has_field (in_s, "colorimetry")
1205 || in_info->colorimetry.range == GST_VIDEO_COLOR_RANGE_UNKNOWN) {
1206 if (context->color_range == AVCOL_RANGE_JPEG) {
1207 out_info->colorimetry.range = GST_VIDEO_COLOR_RANGE_0_255;
1209 out_info->colorimetry.range = GST_VIDEO_COLOR_RANGE_16_235;
1213 /* try to find a good framerate */
1214 if ((in_info->fps_d && in_info->fps_n) ||
1215 GST_VIDEO_INFO_FLAG_IS_SET (in_info, GST_VIDEO_FLAG_VARIABLE_FPS)) {
1216 /* take framerate from input when it was specified (#313970) */
1217 fps_n = in_info->fps_n;
1218 fps_d = in_info->fps_d;
1220 fps_n = ffmpegdec->ctx_time_d / ffmpegdec->ctx_ticks;
1221 fps_d = ffmpegdec->ctx_time_n;
1224 GST_LOG_OBJECT (ffmpegdec, "invalid framerate: %d/0, -> %d/1", fps_n,
1228 if (gst_util_fraction_compare (fps_n, fps_d, 1000, 1) > 0) {
1229 GST_LOG_OBJECT (ffmpegdec, "excessive framerate: %d/%d, -> 0/1", fps_n,
1236 GST_LOG_OBJECT (ffmpegdec, "setting framerate: %d/%d", fps_n, fps_d);
1237 out_info->fps_n = fps_n;
1238 out_info->fps_d = fps_d;
1240 /* calculate and update par now */
1241 gst_ffmpegviddec_update_par (ffmpegdec, in_info, out_info);
1243 /* Copy stereo/multiview info from upstream if set */
1244 if (GST_VIDEO_INFO_MULTIVIEW_MODE (in_info) != GST_VIDEO_MULTIVIEW_MODE_NONE) {
1245 GST_VIDEO_INFO_MULTIVIEW_MODE (out_info) =
1246 GST_VIDEO_INFO_MULTIVIEW_MODE (in_info);
1247 GST_VIDEO_INFO_MULTIVIEW_FLAGS (out_info) =
1248 GST_VIDEO_INFO_MULTIVIEW_FLAGS (in_info);
1251 if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (ffmpegdec)))
1252 goto negotiate_failed;
1254 /* The decoder is configured, we now know the true latency */
1257 gst_util_uint64_scale_ceil (ffmpegdec->context->has_b_frames *
1258 GST_SECOND, fps_d, fps_n);
1259 gst_video_decoder_set_latency (GST_VIDEO_DECODER (ffmpegdec), latency,
1268 GST_ERROR_OBJECT (ffmpegdec,
1269 "decoder requires a video format unsupported by GStreamer");
1274 /* Reset so we try again next time even if force==FALSE */
1275 ffmpegdec->pic_pix_fmt = 0;
1276 ffmpegdec->pic_width = 0;
1277 ffmpegdec->pic_height = 0;
1278 ffmpegdec->pic_par_n = 0;
1279 ffmpegdec->pic_par_d = 0;
1280 ffmpegdec->pic_interlaced = 0;
1281 ffmpegdec->pic_field_order = 0;
1282 ffmpegdec->pic_field_order_changed = FALSE;
1283 ffmpegdec->ctx_ticks = 0;
1284 ffmpegdec->ctx_time_n = 0;
1285 ffmpegdec->ctx_time_d = 0;
1287 GST_ERROR_OBJECT (ffmpegdec, "negotiation failed");
1292 /* perform qos calculations before decoding the next frame.
1294 * Sets the skip_frame flag and if things are really bad, skips to the next
1299 gst_ffmpegviddec_do_qos (GstFFMpegVidDec * ffmpegdec,
1300 GstVideoCodecFrame * frame, gboolean * mode_switch)
1302 GstClockTimeDiff diff;
1303 GstSegmentFlags skip_flags =
1304 GST_VIDEO_DECODER_INPUT_SEGMENT (ffmpegdec).flags;
1306 *mode_switch = FALSE;
1311 if (skip_flags & GST_SEGMENT_FLAG_TRICKMODE_KEY_UNITS) {
1312 ffmpegdec->context->skip_frame = AVDISCARD_NONKEY;
1313 *mode_switch = TRUE;
1314 } else if (skip_flags & GST_SEGMENT_FLAG_TRICKMODE) {
1315 ffmpegdec->context->skip_frame = AVDISCARD_NONREF;
1316 *mode_switch = TRUE;
1319 if (*mode_switch == TRUE) {
1320 /* We've already switched mode, we can return straight away
1321 * without any further calculation */
1326 gst_video_decoder_get_max_decode_time (GST_VIDEO_DECODER (ffmpegdec),
1329 /* if we don't have timing info, then we don't do QoS */
1330 if (G_UNLIKELY (diff == G_MAXINT64)) {
1331 /* Ensure the skipping strategy is the default one */
1332 ffmpegdec->context->skip_frame = ffmpegdec->skip_frame;
1336 GST_DEBUG_OBJECT (ffmpegdec, "decoding time %" G_GINT64_FORMAT, diff);
1338 if (diff > 0 && ffmpegdec->context->skip_frame != AVDISCARD_DEFAULT) {
1339 ffmpegdec->context->skip_frame = AVDISCARD_DEFAULT;
1340 *mode_switch = TRUE;
1341 GST_DEBUG_OBJECT (ffmpegdec, "QOS: normal mode");
1344 else if (diff <= 0 && ffmpegdec->context->skip_frame != AVDISCARD_NONREF) {
1345 ffmpegdec->context->skip_frame = AVDISCARD_NONREF;
1346 *mode_switch = TRUE;
1347 GST_DEBUG_OBJECT (ffmpegdec,
1348 "QOS: hurry up, diff %" G_GINT64_FORMAT " >= 0", diff);
1352 /* get an outbuf buffer with the current picture */
1353 static GstFlowReturn
1354 get_output_buffer (GstFFMpegVidDec * ffmpegdec, GstVideoCodecFrame * frame)
1356 GstFlowReturn ret = GST_FLOW_OK;
1357 AVFrame pic, *outpic;
1358 GstVideoFrame vframe;
1362 GST_LOG_OBJECT (ffmpegdec, "get output buffer");
1364 if (!ffmpegdec->output_state)
1365 goto not_negotiated;
1368 gst_video_decoder_allocate_output_frame (GST_VIDEO_DECODER (ffmpegdec),
1370 if (G_UNLIKELY (ret != GST_FLOW_OK))
1373 /* original ffmpeg code does not handle odd sizes correctly.
1374 * This patched up version does */
1375 /* Fill avpicture */
1376 info = &ffmpegdec->output_state->info;
1377 if (!gst_video_frame_map (&vframe, info, frame->output_buffer,
1378 GST_MAP_READ | GST_MAP_WRITE))
1381 memset (&pic, 0, sizeof (pic));
1382 pic.format = ffmpegdec->pic_pix_fmt;
1383 pic.width = GST_VIDEO_FRAME_WIDTH (&vframe);
1384 pic.height = GST_VIDEO_FRAME_HEIGHT (&vframe);
1385 for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
1386 if (c < GST_VIDEO_INFO_N_PLANES (info)) {
1387 pic.data[c] = GST_VIDEO_FRAME_PLANE_DATA (&vframe, c);
1388 pic.linesize[c] = GST_VIDEO_FRAME_PLANE_STRIDE (&vframe, c);
1389 GST_LOG_OBJECT (ffmpegdec, "[%i] linesize %d, data %p", c,
1390 pic.linesize[c], pic.data[c]);
1393 pic.linesize[c] = 0;
1397 outpic = ffmpegdec->picture;
1399 if (av_frame_copy (&pic, outpic) != 0) {
1400 GST_ERROR_OBJECT (ffmpegdec, "Failed to copy output frame");
1401 ret = GST_FLOW_ERROR;
1404 gst_video_frame_unmap (&vframe);
1406 ffmpegdec->picture->reordered_opaque = -1;
1413 GST_ELEMENT_ERROR (ffmpegdec, RESOURCE, FAILED,
1414 ("Unable to allocate memory"),
1415 ("The downstream pool failed to allocated buffer."));
1420 GST_ELEMENT_ERROR (ffmpegdec, RESOURCE, OPEN_READ_WRITE,
1421 ("Cannot access memory for read and write operation."),
1422 ("The video memory allocated from downstream pool could not mapped for"
1423 "read and write."));
1428 GST_DEBUG_OBJECT (ffmpegdec, "not negotiated");
1429 return GST_FLOW_NOT_NEGOTIATED;
1434 gst_avpacket_init (AVPacket * packet, guint8 * data, guint size)
1436 memset (packet, 0, sizeof (AVPacket));
1437 packet->data = data;
1438 packet->size = size;
1441 /* gst_ffmpegviddec_[video|audio]_frame:
1443 * data: pointer to the data to decode
1444 * size: size of data in bytes
1445 * in_timestamp: incoming timestamp.
1446 * in_duration: incoming duration.
1447 * in_offset: incoming offset (frame number).
1450 * Returns: number of bytes used in decoding. The check for successful decode is
1451 * outbuf being non-NULL.
1454 gst_ffmpegviddec_video_frame (GstFFMpegVidDec * ffmpegdec,
1455 guint8 * data, guint size, gint * have_data, GstVideoCodecFrame * frame,
1456 GstFlowReturn * ret)
1459 gboolean mode_switch;
1460 GstVideoCodecFrame *out_frame;
1461 GstFFMpegVidDecVideoFrame *out_dframe;
1463 GstBufferPool *pool;
1467 /* in case we skip frames */
1468 ffmpegdec->picture->pict_type = -1;
1470 /* run QoS code, we don't stop decoding the frame when we are late because
1471 * else we might skip a reference frame */
1472 gst_ffmpegviddec_do_qos (ffmpegdec, frame, &mode_switch);
1475 /* save reference to the timing info */
1476 ffmpegdec->context->reordered_opaque = (gint64) frame->system_frame_number;
1477 ffmpegdec->picture->reordered_opaque = (gint64) frame->system_frame_number;
1479 GST_DEBUG_OBJECT (ffmpegdec, "stored opaque values idx %d",
1480 frame->system_frame_number);
1483 /* now decode the frame */
1484 gst_avpacket_init (&packet, data, size);
1486 if (ffmpegdec->palette) {
1489 pal = av_packet_new_side_data (&packet, AV_PKT_DATA_PALETTE,
1491 gst_buffer_extract (ffmpegdec->palette, 0, pal, AVPALETTE_SIZE);
1492 GST_DEBUG_OBJECT (ffmpegdec, "copy pal %p %p", &packet, pal);
1495 /* This might call into get_buffer() from another thread,
1496 * which would cause a deadlock. Release the lock here
1497 * and taking it again later seems safe
1498 * See https://bugzilla.gnome.org/show_bug.cgi?id=726020
1500 GST_VIDEO_DECODER_STREAM_UNLOCK (ffmpegdec);
1501 len = avcodec_decode_video2 (ffmpegdec->context,
1502 ffmpegdec->picture, have_data, &packet);
1503 GST_VIDEO_DECODER_STREAM_LOCK (ffmpegdec);
1505 GST_DEBUG_OBJECT (ffmpegdec, "after decode: len %d, have_data %d",
1508 /* when we are in skip_frame mode, don't complain when ffmpeg returned
1509 * no data because we told it to skip stuff. */
1510 if (len < 0 && (mode_switch || ffmpegdec->context->skip_frame))
1513 /* no data, we're done */
1514 if (len < 0 || *have_data == 0)
1517 /* get the output picture timing info again */
1518 out_dframe = ffmpegdec->picture->opaque;
1519 out_frame = gst_video_codec_frame_ref (out_dframe->frame);
1521 /* also give back a buffer allocated by the frame, if any */
1522 gst_buffer_replace (&out_frame->output_buffer, out_dframe->buffer);
1523 gst_buffer_replace (&out_dframe->buffer, NULL);
1525 GST_DEBUG_OBJECT (ffmpegdec,
1526 "pts %" G_GUINT64_FORMAT " duration %" G_GUINT64_FORMAT,
1527 out_frame->pts, out_frame->duration);
1528 GST_DEBUG_OBJECT (ffmpegdec, "picture: pts %" G_GUINT64_FORMAT,
1529 (guint64) ffmpegdec->picture->pts);
1530 GST_DEBUG_OBJECT (ffmpegdec, "picture: num %d",
1531 ffmpegdec->picture->coded_picture_number);
1532 GST_DEBUG_OBJECT (ffmpegdec, "picture: display %d",
1533 ffmpegdec->picture->display_picture_number);
1534 GST_DEBUG_OBJECT (ffmpegdec, "picture: opaque %p",
1535 ffmpegdec->picture->opaque);
1536 GST_DEBUG_OBJECT (ffmpegdec, "picture: reordered opaque %" G_GUINT64_FORMAT,
1537 (guint64) ffmpegdec->picture->reordered_opaque);
1538 GST_DEBUG_OBJECT (ffmpegdec, "repeat_pict:%d",
1539 ffmpegdec->picture->repeat_pict);
1540 GST_DEBUG_OBJECT (ffmpegdec, "corrupted frame: %d",
1541 ! !(ffmpegdec->picture->flags & AV_FRAME_FLAG_CORRUPT));
1543 if (!gst_ffmpegviddec_negotiate (ffmpegdec, ffmpegdec->context,
1544 ffmpegdec->picture))
1545 goto negotiation_error;
1547 pool = gst_video_decoder_get_buffer_pool (GST_VIDEO_DECODER (ffmpegdec));
1548 if (G_UNLIKELY (out_frame->output_buffer == NULL)) {
1549 *ret = get_output_buffer (ffmpegdec, out_frame);
1550 } else if (G_UNLIKELY (out_frame->output_buffer->pool != pool)) {
1551 GstBuffer *tmp = out_frame->output_buffer;
1552 out_frame->output_buffer = NULL;
1553 *ret = get_output_buffer (ffmpegdec, out_frame);
1554 gst_buffer_unref (tmp);
1556 #ifndef G_DISABLE_ASSERT
1558 GstVideoMeta *vmeta = gst_buffer_get_video_meta (out_frame->output_buffer);
1560 GstVideoInfo *info = &ffmpegdec->output_state->info;
1561 g_assert (vmeta->width == GST_VIDEO_INFO_WIDTH (info));
1562 g_assert (vmeta->height == GST_VIDEO_INFO_HEIGHT (info));
1566 gst_object_unref (pool);
1568 if (G_UNLIKELY (*ret != GST_FLOW_OK))
1571 /* Mark corrupted frames as corrupted */
1572 if (ffmpegdec->picture->flags & AV_FRAME_FLAG_CORRUPT)
1573 GST_BUFFER_FLAG_SET (out_frame->output_buffer, GST_BUFFER_FLAG_CORRUPTED);
1575 if (ffmpegdec->pic_interlaced) {
1576 /* set interlaced flags */
1577 if (ffmpegdec->picture->repeat_pict)
1578 GST_BUFFER_FLAG_SET (out_frame->output_buffer, GST_VIDEO_BUFFER_FLAG_RFF);
1579 if (ffmpegdec->picture->top_field_first)
1580 GST_BUFFER_FLAG_SET (out_frame->output_buffer, GST_VIDEO_BUFFER_FLAG_TFF);
1581 if (ffmpegdec->picture->interlaced_frame)
1582 GST_BUFFER_FLAG_SET (out_frame->output_buffer,
1583 GST_VIDEO_BUFFER_FLAG_INTERLACED);
1587 /* so we decoded this frame, frames preceding it in decoding order
1588 * that still do not have a buffer allocated seem rather useless,
1589 * and can be discarded, due to e.g. misparsed bogus frame
1590 * or non-keyframe in skipped decoding, ...
1591 * In any case, not likely to be seen again, so discard those,
1592 * before they pile up and/or mess with timestamping */
1595 GstVideoDecoder *dec = GST_VIDEO_DECODER (ffmpegdec);
1596 gboolean old = TRUE;
1598 ol = l = gst_video_decoder_get_frames (dec);
1600 GstVideoCodecFrame *tmp = l->data;
1605 if (old && GST_VIDEO_CODEC_FRAME_IS_DECODE_ONLY (tmp)) {
1606 GST_LOG_OBJECT (dec,
1607 "discarding ghost frame %p (#%d) PTS:%" GST_TIME_FORMAT " DTS:%"
1608 GST_TIME_FORMAT, tmp, tmp->system_frame_number,
1609 GST_TIME_ARGS (tmp->pts), GST_TIME_ARGS (tmp->dts));
1610 /* drop extra ref and remove from frame list */
1611 gst_video_decoder_release_frame (dec, tmp);
1613 /* drop extra ref we got */
1614 gst_video_codec_frame_unref (tmp);
1621 av_frame_unref (ffmpegdec->picture);
1623 /* FIXME: Ideally we would remap the buffer read-only now before pushing but
1624 * libav might still have a reference to it!
1627 gst_video_decoder_finish_frame (GST_VIDEO_DECODER (ffmpegdec), out_frame);
1630 GST_DEBUG_OBJECT (ffmpegdec, "return flow %s, len %d",
1631 gst_flow_get_name (*ret), len);
1637 GST_DEBUG_OBJECT (ffmpegdec, "no output buffer");
1638 gst_video_decoder_drop_frame (GST_VIDEO_DECODER (ffmpegdec), out_frame);
1645 if (GST_PAD_IS_FLUSHING (GST_VIDEO_DECODER_SRC_PAD (ffmpegdec))) {
1646 *ret = GST_FLOW_FLUSHING;
1649 GST_WARNING_OBJECT (ffmpegdec, "Error negotiating format");
1650 *ret = GST_FLOW_NOT_NEGOTIATED;
1656 /* gst_ffmpegviddec_frame:
1658 * data: pointer to the data to decode
1659 * size: size of data in bytes
1660 * got_data: 0 if no data was decoded, != 0 otherwise.
1661 * in_time: timestamp of data
1662 * in_duration: duration of data
1663 * ret: GstFlowReturn to return in the chain function
1665 * Decode the given frame and pushes it downstream.
1667 * Returns: Number of bytes used in decoding, -1 on error/failure.
1671 gst_ffmpegviddec_frame (GstFFMpegVidDec * ffmpegdec,
1672 guint8 * data, guint size, gint * have_data, GstVideoCodecFrame * frame,
1673 GstFlowReturn * ret)
1675 GstFFMpegVidDecClass *oclass;
1678 if (G_UNLIKELY (ffmpegdec->context->codec == NULL))
1681 GST_LOG_OBJECT (ffmpegdec, "data:%p, size:%d", data, size);
1684 ffmpegdec->context->frame_number++;
1686 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
1689 gst_ffmpegviddec_video_frame (ffmpegdec, data, size, have_data, frame,
1693 GST_WARNING_OBJECT (ffmpegdec,
1694 "avdec_%s: decoding error (len: %d, have_data: %d)",
1695 oclass->in_plugin->name, len, *have_data);
1703 GST_ERROR_OBJECT (ffmpegdec, "no codec context");
1704 *ret = GST_FLOW_NOT_NEGOTIATED;
1709 static GstFlowReturn
1710 gst_ffmpegviddec_drain (GstVideoDecoder * decoder)
1712 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1713 GstFFMpegVidDecClass *oclass;
1715 if (!ffmpegdec->opened)
1718 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
1720 if (oclass->in_plugin->capabilities & CODEC_CAP_DELAY) {
1721 gint have_data, len;
1724 GST_LOG_OBJECT (ffmpegdec,
1725 "codec has delay capabilities, calling until ffmpeg has drained everything");
1728 len = gst_ffmpegviddec_frame (ffmpegdec, NULL, 0, &have_data, NULL, &ret);
1729 } while (len >= 0 && have_data == 1 && ret == GST_FLOW_OK);
1735 static GstFlowReturn
1736 gst_ffmpegviddec_handle_frame (GstVideoDecoder * decoder,
1737 GstVideoCodecFrame * frame)
1739 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1740 guint8 *data, *bdata;
1741 gint size, len, have_data, bsize;
1743 GstFlowReturn ret = GST_FLOW_OK;
1744 gboolean do_padding;
1746 GST_LOG_OBJECT (ffmpegdec,
1747 "Received new data of size %" G_GSIZE_FORMAT ", dts %" GST_TIME_FORMAT
1748 ", pts:%" GST_TIME_FORMAT ", dur:%" GST_TIME_FORMAT,
1749 gst_buffer_get_size (frame->input_buffer), GST_TIME_ARGS (frame->dts),
1750 GST_TIME_ARGS (frame->pts), GST_TIME_ARGS (frame->duration));
1752 if (!gst_buffer_map (frame->input_buffer, &minfo, GST_MAP_READ)) {
1753 GST_ELEMENT_ERROR (ffmpegdec, STREAM, DECODE, ("Decoding problem"),
1754 ("Failed to map buffer for reading"));
1755 return GST_FLOW_ERROR;
1758 /* treat frame as void until a buffer is requested for it */
1759 GST_VIDEO_CODEC_FRAME_FLAG_SET (frame,
1760 GST_VIDEO_CODEC_FRAME_FLAG_DECODE_ONLY);
1765 if (bsize > 0 && (!GST_MEMORY_IS_ZERO_PADDED (minfo.memory)
1766 || (minfo.maxsize - minfo.size) < FF_INPUT_BUFFER_PADDING_SIZE)) {
1768 if (ffmpegdec->padded_size < bsize + FF_INPUT_BUFFER_PADDING_SIZE) {
1769 ffmpegdec->padded_size = bsize + FF_INPUT_BUFFER_PADDING_SIZE;
1770 ffmpegdec->padded = g_realloc (ffmpegdec->padded, ffmpegdec->padded_size);
1771 GST_LOG_OBJECT (ffmpegdec, "resized padding buffer to %d",
1772 ffmpegdec->padded_size);
1774 GST_CAT_TRACE_OBJECT (CAT_PERFORMANCE, ffmpegdec,
1775 "Copy input to add padding");
1776 memcpy (ffmpegdec->padded, bdata, bsize);
1777 memset (ffmpegdec->padded + bsize, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1779 bdata = ffmpegdec->padded;
1786 guint8 tmp_padding[FF_INPUT_BUFFER_PADDING_SIZE];
1788 /* parse, if at all possible */
1793 /* add temporary padding */
1794 GST_CAT_TRACE_OBJECT (CAT_PERFORMANCE, ffmpegdec,
1795 "Add temporary input padding");
1796 memcpy (tmp_padding, data + size, FF_INPUT_BUFFER_PADDING_SIZE);
1797 memset (data + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1800 /* decode a frame of audio/video now */
1802 gst_ffmpegviddec_frame (ffmpegdec, data, size, &have_data, frame, &ret);
1804 if (ret != GST_FLOW_OK) {
1805 GST_LOG_OBJECT (ffmpegdec, "breaking because of flow ret %s",
1806 gst_flow_get_name (ret));
1807 /* bad flow return, make sure we discard all data and exit */
1813 memcpy (data + size, tmp_padding, FF_INPUT_BUFFER_PADDING_SIZE);
1816 if (len == 0 && have_data == 0) {
1817 /* nothing was decoded, this could be because no data was available or
1818 * because we were skipping frames.
1819 * If we have no context we must exit and wait for more data, we keep the
1821 GST_LOG_OBJECT (ffmpegdec, "Decoding didn't return any data, breaking");
1826 /* a decoding error happened, we must break and try again with next data. */
1827 GST_LOG_OBJECT (ffmpegdec, "Decoding error, breaking");
1832 /* prepare for the next round, for codecs with a context we did this
1833 * already when using the parser. */
1839 GST_LOG_OBJECT (ffmpegdec, "Before (while bsize>0). bsize:%d , bdata:%p",
1841 } while (bsize > 0);
1844 GST_DEBUG_OBJECT (ffmpegdec, "Dropping %d bytes of data", bsize);
1846 gst_buffer_unmap (frame->input_buffer, &minfo);
1847 gst_video_codec_frame_unref (frame);
1853 gst_ffmpegviddec_start (GstVideoDecoder * decoder)
1855 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1856 GstFFMpegVidDecClass *oclass;
1858 oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
1860 GST_OBJECT_LOCK (ffmpegdec);
1861 gst_ffmpeg_avcodec_close (ffmpegdec->context);
1862 if (avcodec_get_context_defaults3 (ffmpegdec->context, oclass->in_plugin) < 0) {
1863 GST_DEBUG_OBJECT (ffmpegdec, "Failed to set context defaults");
1864 GST_OBJECT_UNLOCK (ffmpegdec);
1867 ffmpegdec->context->opaque = ffmpegdec;
1868 GST_OBJECT_UNLOCK (ffmpegdec);
1874 gst_ffmpegviddec_stop (GstVideoDecoder * decoder)
1876 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1878 GST_OBJECT_LOCK (ffmpegdec);
1879 gst_ffmpegviddec_close (ffmpegdec, FALSE);
1880 GST_OBJECT_UNLOCK (ffmpegdec);
1881 g_free (ffmpegdec->padded);
1882 ffmpegdec->padded = NULL;
1883 ffmpegdec->padded_size = 0;
1884 if (ffmpegdec->input_state)
1885 gst_video_codec_state_unref (ffmpegdec->input_state);
1886 ffmpegdec->input_state = NULL;
1887 if (ffmpegdec->output_state)
1888 gst_video_codec_state_unref (ffmpegdec->output_state);
1889 ffmpegdec->output_state = NULL;
1891 if (ffmpegdec->internal_pool)
1892 gst_object_unref (ffmpegdec->internal_pool);
1893 ffmpegdec->internal_pool = NULL;
1895 ffmpegdec->pic_pix_fmt = 0;
1896 ffmpegdec->pic_width = 0;
1897 ffmpegdec->pic_height = 0;
1898 ffmpegdec->pic_par_n = 0;
1899 ffmpegdec->pic_par_d = 0;
1900 ffmpegdec->pic_interlaced = 0;
1901 ffmpegdec->pic_field_order = 0;
1902 ffmpegdec->pic_field_order_changed = FALSE;
1903 ffmpegdec->ctx_ticks = 0;
1904 ffmpegdec->ctx_time_n = 0;
1905 ffmpegdec->ctx_time_d = 0;
1907 ffmpegdec->pool_width = 0;
1908 ffmpegdec->pool_height = 0;
1909 ffmpegdec->pool_format = 0;
1914 static GstFlowReturn
1915 gst_ffmpegviddec_finish (GstVideoDecoder * decoder)
1917 gst_ffmpegviddec_drain (decoder);
1918 /* note that finish can and should clean up more drastically,
1919 * but drain is also invoked on e.g. packet loss in GAP handling */
1920 gst_ffmpegviddec_flush (decoder);
1926 gst_ffmpegviddec_flush (GstVideoDecoder * decoder)
1928 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1930 if (ffmpegdec->opened) {
1931 GST_LOG_OBJECT (decoder, "flushing buffers");
1932 avcodec_flush_buffers (ffmpegdec->context);
1939 gst_ffmpegviddec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query)
1941 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) decoder;
1942 GstVideoCodecState *state;
1943 GstBufferPool *pool;
1944 guint size, min, max;
1945 GstStructure *config;
1946 gboolean have_pool, have_videometa, have_alignment, update_pool = FALSE;
1947 GstAllocator *allocator = NULL;
1948 GstAllocationParams params = DEFAULT_ALLOC_PARAM;
1950 have_pool = (gst_query_get_n_allocation_pools (query) != 0);
1952 if (!GST_VIDEO_DECODER_CLASS (parent_class)->decide_allocation (decoder,
1956 state = gst_video_decoder_get_output_state (decoder);
1958 if (gst_query_get_n_allocation_params (query) > 0) {
1959 gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
1960 params.align = MAX (params.align, DEFAULT_STRIDE_ALIGN);
1962 gst_query_add_allocation_param (query, allocator, ¶ms);
1965 gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
1967 /* Don't use pool that can't grow, as we don't know how many buffer we'll
1968 * need, otherwise we may stall */
1969 if (max != 0 && max < REQUIRED_POOL_MAX_BUFFERS) {
1970 gst_object_unref (pool);
1971 pool = gst_video_buffer_pool_new ();
1976 /* if there is an allocator, also drop it, as it might be the reason we
1977 * have this limit. Default will be used */
1979 gst_object_unref (allocator);
1984 config = gst_buffer_pool_get_config (pool);
1985 gst_buffer_pool_config_set_params (config, state->caps, size, min, max);
1986 gst_buffer_pool_config_set_allocator (config, allocator, ¶ms);
1989 gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
1992 gst_buffer_pool_config_add_option (config,
1993 GST_BUFFER_POOL_OPTION_VIDEO_META);
1996 gst_buffer_pool_has_option (pool, GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
1998 /* If we have videometa, we never have to copy */
1999 if (have_videometa && have_pool && have_alignment &&
2000 gst_ffmpegviddec_can_direct_render (ffmpegdec)) {
2001 GstStructure *config_copy = gst_structure_copy (config);
2003 gst_ffmpegvideodec_prepare_dr_pool (ffmpegdec, pool, &state->info,
2006 /* FIXME validate and retry */
2007 if (gst_buffer_pool_set_config (pool, config_copy)) {
2011 gst_buffer_pool_set_active (pool, TRUE);
2012 ret = gst_buffer_pool_acquire_buffer (pool, &tmp, NULL);
2013 if (ret == GST_FLOW_OK) {
2014 GstVideoMeta *vmeta = gst_buffer_get_video_meta (tmp);
2015 gboolean same_stride = TRUE;
2018 for (i = 0; i < vmeta->n_planes; i++) {
2019 if (vmeta->stride[i] != ffmpegdec->stride[i]) {
2020 same_stride = FALSE;
2025 gst_buffer_unref (tmp);
2028 if (ffmpegdec->internal_pool)
2029 gst_object_unref (ffmpegdec->internal_pool);
2030 ffmpegdec->internal_pool = gst_object_ref (pool);
2031 ffmpegdec->pool_info = state->info;
2032 gst_structure_free (config);
2039 if (have_videometa && ffmpegdec->internal_pool
2040 && ffmpegdec->pool_width == state->info.width
2041 && ffmpegdec->pool_height == state->info.height) {
2043 gst_object_unref (pool);
2044 pool = gst_object_ref (ffmpegdec->internal_pool);
2045 gst_structure_free (config);
2050 if (!gst_buffer_pool_set_config (pool, config)) {
2051 gboolean working_pool = FALSE;
2052 config = gst_buffer_pool_get_config (pool);
2054 if (gst_buffer_pool_config_validate_params (config, state->caps, size, min,
2056 working_pool = gst_buffer_pool_set_config (pool, config);
2058 gst_structure_free (config);
2061 if (!working_pool) {
2062 gst_object_unref (pool);
2063 pool = gst_video_buffer_pool_new ();
2064 config = gst_buffer_pool_get_config (pool);
2065 gst_buffer_pool_config_set_params (config, state->caps, size, min, max);
2066 gst_buffer_pool_config_set_allocator (config, NULL, ¶ms);
2067 gst_buffer_pool_set_config (pool, config);
2075 gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
2077 gst_object_unref (pool);
2079 gst_object_unref (allocator);
2080 gst_video_codec_state_unref (state);
2086 gst_ffmpegviddec_propose_allocation (GstVideoDecoder * decoder,
2089 GstAllocationParams params;
2091 gst_allocation_params_init (¶ms);
2092 params.flags = GST_MEMORY_FLAG_ZERO_PADDED;
2093 params.align = DEFAULT_STRIDE_ALIGN;
2094 params.padding = FF_INPUT_BUFFER_PADDING_SIZE;
2095 /* we would like to have some padding so that we don't have to
2096 * memcpy. We don't suggest an allocator. */
2097 gst_query_add_allocation_param (query, NULL, ¶ms);
2099 return GST_VIDEO_DECODER_CLASS (parent_class)->propose_allocation (decoder,
2104 gst_ffmpegviddec_set_property (GObject * object,
2105 guint prop_id, const GValue * value, GParamSpec * pspec)
2107 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) object;
2111 ffmpegdec->lowres = ffmpegdec->context->lowres = g_value_get_enum (value);
2113 case PROP_SKIPFRAME:
2114 ffmpegdec->skip_frame = ffmpegdec->context->skip_frame =
2115 g_value_get_enum (value);
2117 case PROP_DIRECT_RENDERING:
2118 ffmpegdec->direct_rendering = g_value_get_boolean (value);
2121 ffmpegdec->debug_mv = ffmpegdec->context->debug_mv =
2122 g_value_get_boolean (value);
2124 case PROP_MAX_THREADS:
2125 ffmpegdec->max_threads = g_value_get_int (value);
2127 case PROP_OUTPUT_CORRUPT:
2128 ffmpegdec->output_corrupt = g_value_get_boolean (value);
2131 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2137 gst_ffmpegviddec_get_property (GObject * object,
2138 guint prop_id, GValue * value, GParamSpec * pspec)
2140 GstFFMpegVidDec *ffmpegdec = (GstFFMpegVidDec *) object;
2144 g_value_set_enum (value, ffmpegdec->context->lowres);
2146 case PROP_SKIPFRAME:
2147 g_value_set_enum (value, ffmpegdec->context->skip_frame);
2149 case PROP_DIRECT_RENDERING:
2150 g_value_set_boolean (value, ffmpegdec->direct_rendering);
2153 g_value_set_boolean (value, ffmpegdec->context->debug_mv);
2155 case PROP_MAX_THREADS:
2156 g_value_set_int (value, ffmpegdec->max_threads);
2158 case PROP_OUTPUT_CORRUPT:
2159 g_value_set_boolean (value, ffmpegdec->output_corrupt);
2162 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2168 gst_ffmpegviddec_register (GstPlugin * plugin)
2170 GTypeInfo typeinfo = {
2171 sizeof (GstFFMpegVidDecClass),
2172 (GBaseInitFunc) gst_ffmpegviddec_base_init,
2174 (GClassInitFunc) gst_ffmpegviddec_class_init,
2177 sizeof (GstFFMpegVidDec),
2179 (GInstanceInitFunc) gst_ffmpegviddec_init,
2185 in_plugin = av_codec_next (NULL);
2187 GST_LOG ("Registering decoders");
2193 /* only video decoders */
2194 if (!av_codec_is_decoder (in_plugin)
2195 || in_plugin->type != AVMEDIA_TYPE_VIDEO)
2198 /* no quasi codecs, please */
2199 if (in_plugin->id == AV_CODEC_ID_RAWVIDEO ||
2200 in_plugin->id == AV_CODEC_ID_V210 ||
2201 in_plugin->id == AV_CODEC_ID_V210X ||
2202 in_plugin->id == AV_CODEC_ID_V308 ||
2203 in_plugin->id == AV_CODEC_ID_V408 ||
2204 in_plugin->id == AV_CODEC_ID_V410 ||
2205 in_plugin->id == AV_CODEC_ID_R210
2206 || in_plugin->id == AV_CODEC_ID_AYUV
2207 || in_plugin->id == AV_CODEC_ID_Y41P
2208 || in_plugin->id == AV_CODEC_ID_012V
2209 || in_plugin->id == AV_CODEC_ID_YUV4
2210 #if AV_VERSION_INT (LIBAVCODEC_VERSION_MAJOR, LIBAVCODEC_VERSION_MINOR, LIBAVCODEC_VERSION_MICRO) >= \
2211 AV_VERSION_INT (57,4,0)
2212 || in_plugin->id == AV_CODEC_ID_WRAPPED_AVFRAME
2214 || in_plugin->id == AV_CODEC_ID_ZLIB) {
2218 /* No decoders depending on external libraries (we don't build them, but
2219 * people who build against an external ffmpeg might have them.
2220 * We have native gstreamer plugins for all of those libraries anyway. */
2221 if (!strncmp (in_plugin->name, "lib", 3)) {
2223 ("Not using external library decoder %s. Use the gstreamer-native ones instead.",
2228 /* No vdpau plugins until we can figure out how to properly use them
2229 * outside of ffmpeg. */
2230 if (g_str_has_suffix (in_plugin->name, "_vdpau")) {
2232 ("Ignoring VDPAU decoder %s. We can't handle this outside of ffmpeg",
2237 if (g_str_has_suffix (in_plugin->name, "_xvmc")) {
2239 ("Ignoring XVMC decoder %s. We can't handle this outside of ffmpeg",
2244 if (strstr (in_plugin->name, "vaapi")) {
2246 ("Ignoring VAAPI decoder %s. We can't handle this outside of ffmpeg",
2251 if (g_str_has_suffix (in_plugin->name, "_qsv")) {
2253 ("Ignoring qsv decoder %s. We can't handle this outside of ffmpeg",
2258 GST_DEBUG ("Trying plugin %s [%s]", in_plugin->name, in_plugin->long_name);
2260 /* no codecs for which we're GUARANTEED to have better alternatives */
2261 /* MPEG1VIDEO : the mpeg2video decoder is preferred */
2262 /* MP1 : Use MP3 for decoding */
2263 /* MP2 : Use MP3 for decoding */
2264 /* Theora: Use libtheora based theoradec */
2265 if (!strcmp (in_plugin->name, "gif") ||
2266 !strcmp (in_plugin->name, "theora") ||
2267 !strcmp (in_plugin->name, "mpeg1video") ||
2268 strstr (in_plugin->name, "crystalhd") != NULL ||
2269 !strcmp (in_plugin->name, "ass") ||
2270 !strcmp (in_plugin->name, "srt") ||
2271 !strcmp (in_plugin->name, "pgssub") ||
2272 !strcmp (in_plugin->name, "dvdsub") ||
2273 !strcmp (in_plugin->name, "dvbsub")) {
2274 GST_LOG ("Ignoring decoder %s", in_plugin->name);
2278 /* construct the type */
2279 if (!strcmp (in_plugin->name, "hevc")) {
2280 plugin_name = g_strdup ("h265");
2282 plugin_name = g_strdup ((gchar *) in_plugin->name);
2284 g_strdelimit (plugin_name, NULL, '_');
2285 type_name = g_strdup_printf ("avdec_%s", plugin_name);
2286 g_free (plugin_name);
2288 type = g_type_from_name (type_name);
2291 /* create the gtype now */
2293 g_type_register_static (GST_TYPE_VIDEO_DECODER, type_name, &typeinfo,
2295 g_type_set_qdata (type, GST_FFDEC_PARAMS_QDATA, (gpointer) in_plugin);
2298 /* (Ronald) MPEG-4 gets a higher priority because it has been well-
2299 * tested and by far outperforms divxdec/xviddec - so we prefer it.
2300 * msmpeg4v3 same, as it outperforms divxdec for divx3 playback.
2301 * VC1/WMV3 are not working and thus unpreferred for now. */
2302 switch (in_plugin->id) {
2303 case AV_CODEC_ID_MPEG1VIDEO:
2304 case AV_CODEC_ID_MPEG2VIDEO:
2305 case AV_CODEC_ID_MPEG4:
2306 case AV_CODEC_ID_MSMPEG4V3:
2307 case AV_CODEC_ID_H264:
2308 case AV_CODEC_ID_HEVC:
2309 case AV_CODEC_ID_RV10:
2310 case AV_CODEC_ID_RV20:
2311 case AV_CODEC_ID_RV30:
2312 case AV_CODEC_ID_RV40:
2313 rank = GST_RANK_PRIMARY;
2315 /* DVVIDEO: we have a good dv decoder, fast on both ppc as well as x86.
2316 * They say libdv's quality is better though. leave as secondary.
2317 * note: if you change this, see the code in gstdv.c in good/ext/dv.
2319 case AV_CODEC_ID_DVVIDEO:
2320 rank = GST_RANK_SECONDARY;
2323 rank = GST_RANK_MARGINAL;
2326 if (!gst_element_register (plugin, type_name, rank, type)) {
2327 g_warning ("Failed to register %s", type_name);
2335 in_plugin = av_codec_next (in_plugin);
2338 GST_LOG ("Finished Registering decoders");