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gstreamer/subprojects/gst-libav/ext/libav/gstavviddec.c
Sebastian Dröge 90728a1166 avviddec: Unlock video decoder stream lock temporarily while finishing frames 
Temporarily release the video decoder stream lock so that other
threads can continue decoding (e.g. call get_frame()) while data
is being pushed downstream.

At this point it is locked twice, we release one, and then the base class
releases the last one just before pushing the data.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7576>
2024-09-29 12:55:10 +00:00

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <assert.h>
#include <string.h>
#include <libavcodec/avcodec.h>
#include <libavutil/stereo3d.h>
#include <libavutil/mastering_display_metadata.h>
#include "gstav.h"
#include "gstavcodecmap.h"
#include "gstavutils.h"
#include "gstavviddec.h"
GST_DEBUG_CATEGORY_STATIC (GST_CAT_PERFORMANCE);
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(58,132,100)
#define AV_CODEC_CAP_OTHER_THREADS AV_CODEC_CAP_AUTO_THREADS
#endif
#define GST_FFMPEG_VIDEO_CODEC_FRAME_FLAG_ALLOCATED (1<<15)
#define MAX_TS_MASK 0xff
#define DEFAULT_LOWRES 0
#define DEFAULT_SKIPFRAME 0
#define DEFAULT_DIRECT_RENDERING TRUE
#define DEFAULT_MAX_THREADS 0
#define DEFAULT_OUTPUT_CORRUPT TRUE
#define REQUIRED_POOL_MAX_BUFFERS 32
#define DEFAULT_STRIDE_ALIGN 31
#define DEFAULT_ALLOC_PARAM { 0, DEFAULT_STRIDE_ALIGN, 0, 0, }
#define DEFAULT_THREAD_TYPE 0
#define DEFAULT_STD_COMPLIANCE GST_AV_CODEC_COMPLIANCE_AUTO
enum
{
PROP_0,
PROP_LOWRES,
PROP_SKIPFRAME,
PROP_DIRECT_RENDERING,
PROP_DEBUG_MV,
PROP_MAX_THREADS,
PROP_OUTPUT_CORRUPT,
PROP_THREAD_TYPE,
PROP_STD_COMPLIANCE,
PROP_LAST
};
/* A number of function prototypes are given so we can refer to them later. */
static void gst_ffmpegviddec_finalize (GObject * object);
static gboolean gst_ffmpegviddec_set_format (GstVideoDecoder * decoder,
GstVideoCodecState * state);
static GstFlowReturn gst_ffmpegviddec_handle_frame (GstVideoDecoder * decoder,
GstVideoCodecFrame * frame);
static gboolean gst_ffmpegviddec_start (GstVideoDecoder * decoder);
static gboolean gst_ffmpegviddec_stop (GstVideoDecoder * decoder);
static gboolean gst_ffmpegviddec_flush (GstVideoDecoder * decoder);
static gboolean gst_ffmpegviddec_decide_allocation (GstVideoDecoder * decoder,
GstQuery * query);
static gboolean gst_ffmpegviddec_propose_allocation (GstVideoDecoder * decoder,
GstQuery * query);
static void gst_ffmpegviddec_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_ffmpegviddec_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static gboolean gst_ffmpegviddec_negotiate (GstFFMpegVidDec * ffmpegdec,
AVCodecContext * context, AVFrame * picture, GstBufferFlags flags);
/* some sort of bufferpool handling, but different */
static int gst_ffmpegviddec_get_buffer2 (AVCodecContext * context,
AVFrame * picture, int flags);
static gboolean gst_ffmpegviddec_can_direct_render (GstFFMpegVidDec *
ffmpegdec);
static GstFlowReturn gst_ffmpegviddec_finish (GstVideoDecoder * decoder);
static GstFlowReturn gst_ffmpegviddec_drain (GstVideoDecoder * decoder);
static gboolean picture_changed (GstFFMpegVidDec * ffmpegdec,
AVFrame * picture, gboolean one_field);
static gboolean context_changed (GstFFMpegVidDec * ffmpegdec,
AVCodecContext * context);
G_DEFINE_ABSTRACT_TYPE (GstFFMpegVidDec, gst_ffmpegviddec,
GST_TYPE_VIDEO_DECODER);
#define parent_class gst_ffmpegviddec_parent_class
#define GST_FFMPEGVIDDEC_TYPE_LOWRES (gst_ffmpegviddec_lowres_get_type())
static GType
gst_ffmpegviddec_lowres_get_type (void)
{
static GType ffmpegdec_lowres_type = 0;
if (!ffmpegdec_lowres_type) {
static const GEnumValue ffmpegdec_lowres[] = {
{0, "0", "full"},
{1, "1", "1/2-size"},
{2, "2", "1/4-size"},
{0, NULL, NULL},
};
ffmpegdec_lowres_type =
g_enum_register_static ("GstLibAVVidDecLowres", ffmpegdec_lowres);
}
return ffmpegdec_lowres_type;
}
/**
* GstLibAVVidDecSkipFrame:
*
* Types of frames to skip during decoding.
*
* Since: 1.26
*/
/**
* GstLibAVVidDecSkipFrame::default
*
* Since: 1.26
*/
/**
* GstLibAVVidDecSkipFrame::non-ref
*
* Since: 1.26
*/
/**
* GstLibAVVidDecSkipFrame::bidir
*
* Since: 1.26
*/
/**
* GstLibAVVidDecSkipFrame::non-intra
*
* Since: 1.26
*/
/**
* GstLibAVVidDecSkipFrame::non-key
*
* Since: 1.26
*/
/**
* GstLibAVVidDecSkipFrame::all
*
* Since: 1.26
*/
#define GST_FFMPEGVIDDEC_TYPE_SKIPFRAME (gst_ffmpegviddec_skipframe_get_type())
static GType
gst_ffmpegviddec_skipframe_get_type (void)
{
static GType ffmpegdec_skipframe_type = 0;
if (!ffmpegdec_skipframe_type) {
static const GEnumValue ffmpegdec_skipframe[] = {
// taken from https://ffmpeg.org/doxygen/trunk/group__lavc__decoding.html
{AVDISCARD_DEFAULT, "Discard useless packets like 0 size packets in avi",
"default"},
{AVDISCARD_NONREF, "Discard all non reference", "non-ref"},
{AVDISCARD_BIDIR, "Discard all bidirectional frames", "bidir"},
{AVDISCARD_NONINTRA, "Discard all non intra frames", "non-intra"},
{AVDISCARD_NONKEY, "Discard all frames except keyframes", "non-key"},
{AVDISCARD_ALL, "Discard all", "all"},
{0, NULL, NULL},
};
ffmpegdec_skipframe_type =
g_enum_register_static ("GstLibAVVidDecSkipFrame", ffmpegdec_skipframe);
}
return ffmpegdec_skipframe_type;
}
static const GFlagsValue ffmpegdec_thread_types[] = {
{0x0, "Auto", "auto"},
{0x1, "Frame", "frame"},
{0x2, "Slice", "slice"},
{0, NULL, NULL},
};
#define GST_FFMPEGVIDDEC_TYPE_THREAD_TYPE (gst_ffmpegviddec_thread_type_get_type())
static GType
gst_ffmpegviddec_thread_type_get_type (void)
{
static GType ffmpegdec_thread_type_type = 0;
if (!ffmpegdec_thread_type_type) {
ffmpegdec_thread_type_type =
g_flags_register_static ("GstLibAVVidDecThreadType",
ffmpegdec_thread_types);
}
return ffmpegdec_thread_type_type;
}
static GstCaps *
dup_caps_with_alternate (GstCaps * caps)
{
GstCaps *with_alternate;
GstCapsFeatures *features;
with_alternate = gst_caps_copy (caps);
features =
gst_caps_features_new_static_str (GST_CAPS_FEATURE_FORMAT_INTERLACED,
NULL);
gst_caps_set_features_simple (with_alternate, features);
gst_caps_set_simple (with_alternate, "interlace-mode", G_TYPE_STRING,
"alternate", NULL);
return with_alternate;
}
static void
gst_ffmpegviddec_class_init (GstFFMpegVidDecClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->set_property = gst_ffmpegviddec_set_property;
gobject_class->get_property = gst_ffmpegviddec_get_property;
/**
* GstFFMpegVidDec:std-compliance:
*
* Specifies standard compliance mode to use
*
* Since: 1.22
*/
g_object_class_install_property (gobject_class, PROP_STD_COMPLIANCE,
g_param_spec_enum ("std-compliance", "Standard Compliance",
"Standard compliance mode to use", GST_TYPE_AV_CODEC_COMPLIANCE,
DEFAULT_STD_COMPLIANCE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
static void
gst_ffmpegviddec_subclass_init (GstFFMpegVidDecClass * klass,
gconstpointer class_data)
{
GstVideoDecoderClass *viddec_class = GST_VIDEO_DECODER_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstPadTemplate *sinktempl, *srctempl;
GstCaps *sinkcaps, *srccaps;
const AVCodec *in_plugin;
gchar *longname, *description;
int caps;
in_plugin = class_data;
g_assert (in_plugin != NULL);
/* construct the element details struct */
longname = g_strdup_printf ("libav %s decoder", in_plugin->long_name);
description = g_strdup_printf ("libav %s decoder", in_plugin->name);
gst_element_class_set_metadata (element_class, longname,
"Codec/Decoder/Video", description,
"Wim Taymans <wim.taymans@gmail.com>, "
"Ronald Bultje <rbultje@ronald.bitfreak.net>, "
"Edward Hervey <bilboed@bilboed.com>");
g_free (longname);
g_free (description);
/* get the caps */
sinkcaps = gst_ffmpeg_codecid_to_caps (in_plugin->id, NULL, FALSE);
if (!sinkcaps) {
GST_DEBUG ("Couldn't get sink caps for decoder '%s'", in_plugin->name);
sinkcaps = gst_caps_new_empty_simple ("unknown/unknown");
}
srccaps = gst_ffmpeg_codectype_to_video_caps (NULL,
in_plugin->id, FALSE, in_plugin);
if (!srccaps) {
GST_DEBUG ("Couldn't get source caps for decoder '%s'", in_plugin->name);
srccaps = gst_caps_from_string ("video/x-raw");
}
gst_caps_append (srccaps, dup_caps_with_alternate (srccaps));
/* pad templates */
sinktempl = gst_pad_template_new ("sink", GST_PAD_SINK,
GST_PAD_ALWAYS, sinkcaps);
srctempl = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, srccaps);
gst_element_class_add_pad_template (element_class, srctempl);
gst_element_class_add_pad_template (element_class, sinktempl);
gst_caps_unref (sinkcaps);
gst_caps_unref (srccaps);
klass->in_plugin = in_plugin;
gobject_class->finalize = gst_ffmpegviddec_finalize;
gobject_class->set_property = gst_ffmpegviddec_set_property;
gobject_class->get_property = gst_ffmpegviddec_get_property;
g_object_class_install_property (gobject_class, PROP_SKIPFRAME,
g_param_spec_enum ("skip-frame", "Skip frames",
"Which types of frames to skip during decoding",
GST_FFMPEGVIDDEC_TYPE_SKIPFRAME, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_LOWRES,
g_param_spec_enum ("lowres", "Low resolution",
"At which resolution to decode images",
GST_FFMPEGVIDDEC_TYPE_LOWRES, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_DIRECT_RENDERING,
g_param_spec_boolean ("direct-rendering", "Direct Rendering",
"Enable direct rendering", DEFAULT_DIRECT_RENDERING,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
#ifndef GST_REMOVE_DEPRECATED
g_object_class_install_property (gobject_class, PROP_DEBUG_MV,
g_param_spec_boolean ("debug-mv", "Debug motion vectors",
"Whether to print motion vectors on top of the image "
"(deprecated, non-functional)", FALSE,
G_PARAM_DEPRECATED | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
#endif
g_object_class_install_property (gobject_class, PROP_OUTPUT_CORRUPT,
g_param_spec_boolean ("output-corrupt", "Output corrupt buffers",
"Whether libav should output frames even if corrupted",
DEFAULT_OUTPUT_CORRUPT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
caps = klass->in_plugin->capabilities;
if (caps & (AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_SLICE_THREADS)) {
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MAX_THREADS,
g_param_spec_int ("max-threads", "Maximum decode threads",
"Maximum number of worker threads to spawn. (0 = auto)",
0, G_MAXINT, DEFAULT_MAX_THREADS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_THREAD_TYPE,
g_param_spec_flags ("thread-type", "Thread type",
"Multithreading methods to use",
GST_FFMPEGVIDDEC_TYPE_THREAD_TYPE,
DEFAULT_THREAD_TYPE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
viddec_class->set_format = gst_ffmpegviddec_set_format;
viddec_class->handle_frame = gst_ffmpegviddec_handle_frame;
viddec_class->start = gst_ffmpegviddec_start;
viddec_class->stop = gst_ffmpegviddec_stop;
viddec_class->flush = gst_ffmpegviddec_flush;
viddec_class->finish = gst_ffmpegviddec_finish;
viddec_class->drain = gst_ffmpegviddec_drain;
viddec_class->decide_allocation = gst_ffmpegviddec_decide_allocation;
viddec_class->propose_allocation = gst_ffmpegviddec_propose_allocation;
GST_DEBUG_CATEGORY_GET (GST_CAT_PERFORMANCE, "GST_PERFORMANCE");
gst_type_mark_as_plugin_api (GST_FFMPEGVIDDEC_TYPE_LOWRES, 0);
gst_type_mark_as_plugin_api (GST_FFMPEGVIDDEC_TYPE_SKIPFRAME, 0);
gst_type_mark_as_plugin_api (GST_FFMPEGVIDDEC_TYPE_THREAD_TYPE, 0);
gst_type_mark_as_plugin_api (GST_TYPE_AV_CODEC_COMPLIANCE, 0);
gst_type_mark_as_plugin_api (GST_TYPE_FFMPEGVIDDEC, 0);
}
static void
gst_ffmpegviddec_init (GstFFMpegVidDec * ffmpegdec)
{
}
static void
gst_ffmpegviddec_subinit (GstFFMpegVidDec * ffmpegdec)
{
/* some ffmpeg data */
ffmpegdec->skip_frame = ffmpegdec->lowres = 0;
ffmpegdec->direct_rendering = DEFAULT_DIRECT_RENDERING;
ffmpegdec->max_threads = DEFAULT_MAX_THREADS;
ffmpegdec->output_corrupt = DEFAULT_OUTPUT_CORRUPT;
ffmpegdec->thread_type = DEFAULT_THREAD_TYPE;
ffmpegdec->std_compliance = DEFAULT_STD_COMPLIANCE;
GST_PAD_SET_ACCEPT_TEMPLATE (GST_VIDEO_DECODER_SINK_PAD (ffmpegdec));
gst_video_decoder_set_use_default_pad_acceptcaps (GST_VIDEO_DECODER_CAST
(ffmpegdec), TRUE);
gst_video_decoder_set_needs_format (GST_VIDEO_DECODER (ffmpegdec), TRUE);
}
static void
gst_ffmpegviddec_finalize (GObject * object)
{
GstFFMpegVidDec *ffmpegdec = GST_FFMPEGVIDDEC (object);
av_frame_free (&ffmpegdec->picture);
if (ffmpegdec->context)
av_freep (&ffmpegdec->context->extradata);
avcodec_free_context (&ffmpegdec->context);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_ffmpegviddec_context_set_flags (AVCodecContext * context, guint flags,
gboolean enable)
{
g_return_if_fail (context != NULL);
if (enable)
context->flags |= flags;
else
context->flags &= ~flags;
}
static void
gst_ffmpegviddec_context_set_flags2 (AVCodecContext * context, guint flags,
gboolean enable)
{
g_return_if_fail (context != NULL);
if (enable)
context->flags2 |= flags;
else
context->flags2 &= ~flags;
}
/* with LOCK */
static void
gst_ffmpegviddec_close (GstFFMpegVidDec * ffmpegdec)
{
guint i;
GST_LOG_OBJECT (ffmpegdec, "closing ffmpeg codec");
gst_caps_replace (&ffmpegdec->last_caps, NULL);
if (ffmpegdec->context)
av_freep (&ffmpegdec->context->extradata);
avcodec_free_context (&ffmpegdec->context);
for (i = 0; i < G_N_ELEMENTS (ffmpegdec->stride); i++)
ffmpegdec->stride[i] = -1;
gst_buffer_replace (&ffmpegdec->palette, NULL);
}
/* with LOCK */
static gboolean
gst_ffmpegviddec_open (GstFFMpegVidDec * ffmpegdec)
{
GstFFMpegVidDecClass *oclass;
guint i;
oclass = GST_FFMPEGVIDDEC_GET_CLASS (ffmpegdec);
if (gst_ffmpeg_avcodec_open (ffmpegdec->context, oclass->in_plugin) < 0)
goto could_not_open;
for (i = 0; i < G_N_ELEMENTS (ffmpegdec->stride); i++)
ffmpegdec->stride[i] = -1;
GST_LOG_OBJECT (ffmpegdec, "Opened libav codec %s, id %d",
oclass->in_plugin->name, oclass->in_plugin->id);
gst_ffmpegviddec_context_set_flags (ffmpegdec->context,
AV_CODEC_FLAG_OUTPUT_CORRUPT, ffmpegdec->output_corrupt);
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT (60, 31, 100)
gst_ffmpegviddec_context_set_flags (ffmpegdec->context,
AV_CODEC_FLAG_COPY_OPAQUE, TRUE);
#endif
return TRUE;
/* ERRORS */
could_not_open:
{
gst_ffmpegviddec_close (ffmpegdec);
GST_DEBUG_OBJECT (ffmpegdec, "avdec_%s: Failed to open libav codec",
oclass->in_plugin->name);
return FALSE;
}
}
static void
gst_ffmpegviddec_get_palette (GstFFMpegVidDec * ffmpegdec,
GstVideoCodecState * state)
{
GstStructure *str = gst_caps_get_structure (state->caps, 0);
const GValue *palette_v;
GstBuffer *palette;
/* do we have a palette? */
if ((palette_v = gst_structure_get_value (str, "palette_data"))) {
palette = gst_value_get_buffer (palette_v);
GST_DEBUG ("got palette data %p", palette);
if (gst_buffer_get_size (palette) >= AVPALETTE_SIZE) {
gst_buffer_replace (&ffmpegdec->palette, palette);
}
}
}
static gboolean
gst_ffmpegviddec_needs_reset (GstFFMpegVidDec * ffmpegdec,
GstVideoCodecState * state)
{
GstCaps *last_caps, *new_caps;
gboolean needs_reset;
if (ffmpegdec->last_caps == NULL)
return TRUE;
last_caps = gst_caps_copy (ffmpegdec->last_caps);
new_caps = gst_caps_copy (state->caps);
/* Simply ignore framerate for now, this could easily be evolved per CODEC if
* future issue are found.*/
gst_structure_remove_field (gst_caps_get_structure (last_caps, 0),
"framerate");
gst_structure_remove_field (gst_caps_get_structure (new_caps, 0),
"framerate");
needs_reset = !gst_caps_is_equal (last_caps, new_caps);
gst_caps_unref (last_caps);
gst_caps_unref (new_caps);
return needs_reset;
}
static gboolean
gst_ffmpegviddec_set_format (GstVideoDecoder * decoder,
GstVideoCodecState * state)
{
GstFFMpegVidDec *ffmpegdec;
GstFFMpegVidDecClass *oclass;
GstClockTime latency = GST_CLOCK_TIME_NONE;
gboolean ret = FALSE;
gboolean is_live;
GstQuery *query;
ffmpegdec = GST_FFMPEGVIDDEC (decoder);
oclass = GST_FFMPEGVIDDEC_GET_CLASS (ffmpegdec);
GST_DEBUG_OBJECT (ffmpegdec, "setcaps called");
GST_OBJECT_LOCK (ffmpegdec);
if (!gst_ffmpegviddec_needs_reset (ffmpegdec, state)) {
gst_caps_replace (&ffmpegdec->last_caps, state->caps);
goto update_state;
}
/* close old session */
if (ffmpegdec->context) {
GST_OBJECT_UNLOCK (ffmpegdec);
gst_ffmpegviddec_finish (decoder);
GST_OBJECT_LOCK (ffmpegdec);
gst_ffmpegviddec_close (ffmpegdec);
ffmpegdec->pic_pix_fmt = 0;
ffmpegdec->pic_width = 0;
ffmpegdec->pic_height = 0;
ffmpegdec->pic_par_n = 0;
ffmpegdec->pic_par_d = 0;
ffmpegdec->pic_interlaced = 0;
ffmpegdec->pic_field_order = 0;
ffmpegdec->pic_field_order_changed = FALSE;
ffmpegdec->ctx_ticks = 0;
ffmpegdec->ctx_time_n = 0;
ffmpegdec->ctx_time_d = 0;
ffmpegdec->cur_multiview_mode = GST_VIDEO_MULTIVIEW_MODE_NONE;
ffmpegdec->cur_multiview_flags = GST_VIDEO_MULTIVIEW_FLAGS_NONE;
}
ffmpegdec->context = avcodec_alloc_context3 (oclass->in_plugin);
if (ffmpegdec->context == NULL) {
GST_DEBUG_OBJECT (ffmpegdec, "Failed to allocate context");
GST_OBJECT_UNLOCK (ffmpegdec);
return FALSE;
}
ffmpegdec->context->opaque = ffmpegdec;
gst_caps_replace (&ffmpegdec->last_caps, state->caps);
/* set buffer functions */
ffmpegdec->context->get_buffer2 = gst_ffmpegviddec_get_buffer2;
ffmpegdec->context->draw_horiz_band = NULL;
/* reset coded_width/_height to prevent it being reused from last time when
* the codec is opened again, causing a mismatch and possible
* segfault/corruption. (Common scenario when renegotiating caps) */
ffmpegdec->context->coded_width = 0;
ffmpegdec->context->coded_height = 0;
GST_LOG_OBJECT (ffmpegdec, "size %dx%d", ffmpegdec->context->width,
ffmpegdec->context->height);
/* FIXME : Create a method that takes GstVideoCodecState instead */
/* get size and so */
gst_ffmpeg_caps_with_codecid (oclass->in_plugin->id,
oclass->in_plugin->type, state->caps, ffmpegdec->context);
GST_LOG_OBJECT (ffmpegdec, "size after %dx%d", ffmpegdec->context->width,
ffmpegdec->context->height);
gst_ffmpegviddec_get_palette (ffmpegdec, state);
if (!ffmpegdec->context->time_base.den || !ffmpegdec->context->time_base.num) {
GST_DEBUG_OBJECT (ffmpegdec, "forcing 25/1 framerate");
ffmpegdec->context->time_base.num = 1;
ffmpegdec->context->time_base.den = 25;
}
/* workaround encoder bugs */
ffmpegdec->context->workaround_bugs |= FF_BUG_AUTODETECT;
ffmpegdec->context->err_recognition = 1;
/* for slow cpus */
ffmpegdec->context->lowres = ffmpegdec->lowres;
ffmpegdec->context->skip_frame = ffmpegdec->skip_frame;
query = gst_query_new_latency ();
is_live = FALSE;
/* Check if upstream is live. If it isn't we can enable frame based
* threading, which is adding latency */
if (gst_pad_peer_query (GST_VIDEO_DECODER_SINK_PAD (ffmpegdec), query)) {
gst_query_parse_latency (query, &is_live, NULL, NULL);
}
gst_query_unref (query);
if (ffmpegdec->thread_type) {
GST_DEBUG_OBJECT (ffmpegdec, "Use requested thread type 0x%x",
ffmpegdec->thread_type);
ffmpegdec->context->thread_type = ffmpegdec->thread_type;
} else {
if (is_live)
ffmpegdec->context->thread_type = FF_THREAD_SLICE;
else
ffmpegdec->context->thread_type = FF_THREAD_SLICE | FF_THREAD_FRAME;
}
if (ffmpegdec->max_threads == 0) {
/* When thread type is FF_THREAD_FRAME, extra latency is introduced equal
* to one frame per thread. We thus need to calculate the thread count ourselves */
if ((!(oclass->in_plugin->capabilities & AV_CODEC_CAP_OTHER_THREADS)) ||
(ffmpegdec->context->thread_type & FF_THREAD_FRAME))
ffmpegdec->context->thread_count =
MIN (gst_ffmpeg_auto_max_threads (), 16);
else
ffmpegdec->context->thread_count = 0;
} else
ffmpegdec->context->thread_count = ffmpegdec->max_threads;
if (ffmpegdec->std_compliance == GST_AV_CODEC_COMPLIANCE_AUTO) {
/* Normal yields lower latency, but fails some compliance check */
if (is_live || ffmpegdec->context->thread_type == FF_THREAD_SLICE) {
ffmpegdec->context->strict_std_compliance =
GST_AV_CODEC_COMPLIANCE_NORMAL;
} else {
ffmpegdec->context->strict_std_compliance =
GST_AV_CODEC_COMPLIANCE_STRICT;
}
} else {
ffmpegdec->context->strict_std_compliance = ffmpegdec->std_compliance;
}
if (oclass->in_plugin->id == AV_CODEC_ID_H264) {
GstStructure *s = gst_caps_get_structure (state->caps, 0);
const char *alignment;
gboolean nal_aligned;
alignment = gst_structure_get_string (s, "alignment");
nal_aligned = !g_strcmp0 (alignment, "nal");
if (nal_aligned) {
if (ffmpegdec->context->thread_type == FF_THREAD_FRAME)
goto nal_only_slice;
ffmpegdec->context->thread_type = FF_THREAD_SLICE;
}
gst_ffmpegviddec_context_set_flags2 (ffmpegdec->context,
AV_CODEC_FLAG2_CHUNKS, nal_aligned);
gst_video_decoder_set_subframe_mode (decoder, nal_aligned);
}
/* open codec - we don't select an output pix_fmt yet,
* simply because we don't know! We only get it
* during playback... */
if (!gst_ffmpegviddec_open (ffmpegdec))
goto open_failed;
update_state:
if (ffmpegdec->input_state)
gst_video_codec_state_unref (ffmpegdec->input_state);
ffmpegdec->input_state = gst_video_codec_state_ref (state);
/* Use the framerate values stored in the decoder for calculating latency. The
* upstream framerate might not be set but we still want to report a latency
* if needed. */
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(60, 31, 100)
if (ffmpegdec->context->time_base.den && ffmpegdec->context->codec_descriptor
&& ffmpegdec->context->codec_descriptor->props) {
#else
if (ffmpegdec->context->time_base.den && ffmpegdec->context->ticks_per_frame) {
#endif
const gint fps_n = ffmpegdec->context->time_base.den;
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(60, 31, 100)
const gint ticks_per_frame =
(GST_VIDEO_INFO_IS_INTERLACED (&ffmpegdec->input_state->info)
&& ffmpegdec->context->codec_descriptor
&& ffmpegdec->context->
codec_descriptor->props & AV_CODEC_PROP_FIELDS) ? 2 : 1;
#else
const gint ticks_per_frame = ffmpegdec->context->ticks_per_frame;
#endif
const gint fps_d = ffmpegdec->context->time_base.num * ticks_per_frame;
if (fps_n) {
latency = gst_util_uint64_scale_ceil (
(ffmpegdec->context->has_b_frames) * GST_SECOND, fps_d, fps_n);
if (ffmpegdec->context->thread_type & FF_THREAD_FRAME) {
latency +=
gst_util_uint64_scale_ceil (ffmpegdec->context->thread_count *
GST_SECOND, fps_d, fps_n);
}
}
}
ret = TRUE;
done:
GST_OBJECT_UNLOCK (ffmpegdec);
if (GST_CLOCK_TIME_IS_VALID (latency))
gst_video_decoder_set_latency (decoder, latency, latency);
return ret;
/* ERRORS */
open_failed:
{
GST_DEBUG_OBJECT (ffmpegdec, "Failed to open");
if (ffmpegdec->context)
av_freep (&ffmpegdec->context->extradata);
avcodec_free_context (&ffmpegdec->context);
goto done;
}
nal_only_slice:
{
GST_ERROR_OBJECT (ffmpegdec,
"Can't do NAL aligned H.264 with frame threading.");
if (ffmpegdec->context)
av_freep (&ffmpegdec->context->extradata);
avcodec_free_context (&ffmpegdec->context);
goto done;
}
}
typedef struct
{
GstFFMpegVidDec *ffmpegdec;
GstVideoCodecFrame *frame;
gboolean mapped;
GstVideoFrame vframe;
GstBuffer *buffer;
AVBufferRef *avbuffer;
} GstFFMpegVidDecVideoFrame;
static GstFFMpegVidDecVideoFrame *
gst_ffmpegviddec_video_frame_new (GstFFMpegVidDec * ffmpegdec,
GstVideoCodecFrame * frame)
{
GstFFMpegVidDecVideoFrame *dframe;
dframe = g_new0 (GstFFMpegVidDecVideoFrame, 1);
dframe->ffmpegdec = ffmpegdec;
dframe->frame = frame;
GST_DEBUG_OBJECT (ffmpegdec, "new video frame %p for sfn # %d", dframe,
frame->system_frame_number);
return dframe;
}
static void
gst_ffmpegviddec_video_frame_free (GstFFMpegVidDec * ffmpegdec,
GstFFMpegVidDecVideoFrame * frame)
{
GST_DEBUG_OBJECT (ffmpegdec, "free video frame %p for sfn # %d", frame,
frame->frame->system_frame_number);
if (frame->mapped)
gst_video_frame_unmap (&frame->vframe);
GST_VIDEO_CODEC_FRAME_FLAG_UNSET (frame->frame,
GST_FFMPEG_VIDEO_CODEC_FRAME_FLAG_ALLOCATED);
gst_video_decoder_release_frame (GST_VIDEO_DECODER (ffmpegdec), frame->frame);
gst_buffer_replace (&frame->buffer, NULL);
if (frame->avbuffer) {
av_buffer_unref (&frame->avbuffer);
}
g_free (frame);
}
static void
dummy_free_buffer (void *opaque, uint8_t * data)
{
GstFFMpegVidDecVideoFrame *frame = opaque;
gst_ffmpegviddec_video_frame_free (frame->ffmpegdec, frame);
}
/* This function prepares the pool configuration for direct rendering. To use
* this method, the codec should support direct rendering and the pool should
* support video meta and video alignment */
static void
gst_ffmpegvideodec_prepare_dr_pool (GstFFMpegVidDec * ffmpegdec,
GstBufferPool * pool, GstVideoInfo * info, GstStructure * config)
{
GstAllocationParams params;
GstVideoAlignment align;
GstAllocator *allocator = NULL;
gint width, height;
gint linesize_align[AV_NUM_DATA_POINTERS];
gint i;
gsize max_align;
width = GST_VIDEO_INFO_WIDTH (info);
height = MAX (GST_VIDEO_INFO_HEIGHT (info), ffmpegdec->context->coded_height);
/* let ffmpeg find the alignment and padding */
avcodec_align_dimensions2 (ffmpegdec->context, &width, &height,
linesize_align);
align.padding_top = 0;
align.padding_left = 0;
align.padding_right = width - GST_VIDEO_INFO_WIDTH (info);
align.padding_bottom = height - GST_VIDEO_INFO_HEIGHT (info);
/* add extra padding to match libav buffer allocation sizes */
align.padding_bottom++;
gst_buffer_pool_config_get_allocator (config, &allocator, &params);
max_align = DEFAULT_STRIDE_ALIGN;
max_align |= params.align;
for (i = 0; i < GST_VIDEO_MAX_PLANES; i++) {
if (linesize_align[i] > 0)
max_align |= linesize_align[i] - 1;
}
for (i = 0; i < GST_VIDEO_MAX_PLANES; i++)
align.stride_align[i] = max_align;
params.align = max_align;
gst_buffer_pool_config_set_allocator (config, allocator, &params);
GST_DEBUG_OBJECT (ffmpegdec, "aligned dimension %dx%d -> %dx%d "
"padding t:%u l:%u r:%u b:%u, stride_align %d:%d:%d:%d",
GST_VIDEO_INFO_WIDTH (info),
GST_VIDEO_INFO_HEIGHT (info), width, height, align.padding_top,
align.padding_left, align.padding_right, align.padding_bottom,
align.stride_align[0], align.stride_align[1], align.stride_align[2],
align.stride_align[3]);
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
gst_buffer_pool_config_set_video_alignment (config, &align);
}
static void
gst_ffmpegviddec_ensure_internal_pool (GstFFMpegVidDec * ffmpegdec,
AVFrame * picture, GstVideoInterlaceMode interlace_mode)
{
GstAllocationParams params = DEFAULT_ALLOC_PARAM;
GstVideoInfo info;
GstVideoFormat format;
GstCaps *caps;
GstStructure *config;
guint i;
format = gst_ffmpeg_pixfmt_to_videoformat (picture->format);
if (ffmpegdec->internal_pool != NULL &&
GST_VIDEO_INFO_FORMAT (&ffmpegdec->pool_info) == format &&
ffmpegdec->pool_width == picture->width &&
ffmpegdec->pool_height == picture->height &&
ffmpegdec->pool_format == picture->format)
return;
GST_DEBUG_OBJECT (ffmpegdec, "Updating internal pool (%i, %i)",
picture->width, picture->height);
/* if we are negotiating from get_buffer, then renegotiate later in order
* to potentially use a downstream pool */
if (gst_ffmpegviddec_can_direct_render (ffmpegdec))
gst_pad_mark_reconfigure (GST_VIDEO_DECODER_SRC_PAD (ffmpegdec));
format = gst_ffmpeg_pixfmt_to_videoformat (picture->format);
if (interlace_mode == GST_VIDEO_INTERLACE_MODE_ALTERNATE) {
gst_video_info_set_interlaced_format (&info, format, interlace_mode,
picture->width, 2 * picture->height);
} else {
gst_video_info_set_format (&info, format, picture->width, picture->height);
}
/* If we have not yet been negotiated, a NONE format here would
* result in invalid initial dimension alignments, and potential
* out of bounds writes.
*/
ffmpegdec->context->pix_fmt = picture->format;
for (i = 0; i < G_N_ELEMENTS (ffmpegdec->stride); i++)
ffmpegdec->stride[i] = -1;
if (ffmpegdec->internal_pool)
gst_object_unref (ffmpegdec->internal_pool);
ffmpegdec->internal_pool = gst_video_buffer_pool_new ();
config = gst_buffer_pool_get_config (ffmpegdec->internal_pool);
caps = gst_video_info_to_caps (&info);
gst_buffer_pool_config_set_params (config, caps, info.size, 2, 0);
gst_buffer_pool_config_set_allocator (config, NULL, &params);
gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
gst_ffmpegvideodec_prepare_dr_pool (ffmpegdec,
ffmpegdec->internal_pool, &info, config);
/* generic video pool never fails */
gst_buffer_pool_set_config (ffmpegdec->internal_pool, config);
gst_caps_unref (caps);
gst_buffer_pool_set_active (ffmpegdec->internal_pool, TRUE);
/* Remember pool size so we can detect changes */
ffmpegdec->pool_width = picture->width;
ffmpegdec->pool_height =
MAX (picture->height, ffmpegdec->context->coded_height);
ffmpegdec->pool_format = picture->format;
ffmpegdec->pool_info = info;
}
static gboolean
gst_ffmpegviddec_can_direct_render (GstFFMpegVidDec * ffmpegdec)
{
GstFFMpegVidDecClass *oclass;
if (!ffmpegdec->direct_rendering)
return FALSE;
oclass = GST_FFMPEGVIDDEC_GET_CLASS (ffmpegdec);
return ((oclass->in_plugin->capabilities & AV_CODEC_CAP_DR1) ==
AV_CODEC_CAP_DR1);
}
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT (60, 31, 100)
static void
gst_ffmpeg_opaque_free (void *opaque, guint8 * data)
{
GstVideoCodecFrame *frame = (GstVideoCodecFrame *) opaque;
GST_DEBUG ("Releasing frame %p", frame);
gst_video_codec_frame_unref (frame);
}
#endif
/* called when ffmpeg wants us to allocate a buffer to write the decoded frame
* into. We try to give it memory from our pool */
static int
gst_ffmpegviddec_get_buffer2 (AVCodecContext * context, AVFrame * picture,
int flags)
{
GstVideoCodecFrame *frame;
GstFFMpegVidDecVideoFrame *dframe;
GstFFMpegVidDec *ffmpegdec;
guint c;
GstFlowReturn ret;
int create_buffer_flags = 0;
gint system_frame_number = 0;
ffmpegdec = GST_FFMPEGVIDDEC (context->opaque);
GST_DEBUG_OBJECT (ffmpegdec, "flags %d", flags);
GST_DEBUG_OBJECT (ffmpegdec, "getting buffer picture %p", picture);
/* apply the last info we have seen to this picture, when we get the
* picture back from ffmpeg we can use this to correctly timestamp the output
* buffer */
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT (60, 31, 100)
{
GstVideoCodecFrame *input_frame =
av_buffer_get_opaque (picture->opaque_ref);
g_assert (input_frame != NULL);
GST_DEBUG_OBJECT (ffmpegdec, "input_frame %p", input_frame);
/* ******************************* */
/* Test if the stored frame in the opaque matches the one video decoder has for that ref ! */
system_frame_number = input_frame->system_frame_number;
}
#else
system_frame_number = (gint) picture->reordered_opaque;
#endif
GST_DEBUG_OBJECT (ffmpegdec, "opaque value SN %d", system_frame_number);
frame =
gst_video_decoder_get_frame (GST_VIDEO_DECODER (ffmpegdec),
system_frame_number);
if (G_UNLIKELY (frame == NULL))
goto no_frame;
/* now it has a buffer allocated, so it is real and will also
* be _released */
GST_VIDEO_CODEC_FRAME_FLAG_SET (frame,
GST_FFMPEG_VIDEO_CODEC_FRAME_FLAG_ALLOCATED);
GST_VIDEO_CODEC_FRAME_FLAG_UNSET (frame,
GST_VIDEO_CODEC_FRAME_FLAG_DECODE_ONLY);
if (G_UNLIKELY (frame->output_buffer != NULL))
goto duplicate_frame;
/* GstFFMpegVidDecVideoFrame receives the frame ref */
if (picture->opaque) {
GST_DEBUG_OBJECT (ffmpegdec, "Re-using opaque %p", picture->opaque);
dframe = picture->opaque;
dframe->frame = frame;
} else {
picture->opaque = dframe =
gst_ffmpegviddec_video_frame_new (ffmpegdec, frame);
GST_DEBUG_OBJECT (ffmpegdec, "storing opaque %p", dframe);
}
if (!gst_ffmpegviddec_can_direct_render (ffmpegdec))
goto no_dr;
gst_ffmpegviddec_ensure_internal_pool (ffmpegdec, picture,
GST_BUFFER_FLAG_IS_SET (frame->input_buffer,
GST_VIDEO_BUFFER_FLAG_ONEFIELD) ? GST_VIDEO_INTERLACE_MODE_ALTERNATE :
GST_VIDEO_INTERLACE_MODE_PROGRESSIVE);
ret = gst_buffer_pool_acquire_buffer (ffmpegdec->internal_pool,
&frame->output_buffer, NULL);
if (ret != GST_FLOW_OK)
goto alloc_failed;
/* piggy-backed alloc'ed on the frame,
* and there was much rejoicing and we are grateful.
* Now take away buffer from frame, we will give it back later when decoded.
* This allows multiple request for a buffer per frame; unusual but possible. */
gst_buffer_replace (&dframe->buffer, frame->output_buffer);
gst_buffer_replace (&frame->output_buffer, NULL);
/* Fill avpicture */
if (!gst_video_frame_map (&dframe->vframe, &ffmpegdec->pool_info,
dframe->buffer, GST_MAP_READWRITE))
goto map_failed;
dframe->mapped = TRUE;
for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
if (c < GST_VIDEO_INFO_N_PLANES (&ffmpegdec->pool_info)) {
picture->data[c] = GST_VIDEO_FRAME_PLANE_DATA (&dframe->vframe, c);
picture->linesize[c] = GST_VIDEO_FRAME_PLANE_STRIDE (&dframe->vframe, c);
if (ffmpegdec->stride[c] == -1)
ffmpegdec->stride[c] = picture->linesize[c];
/* libav does not allow stride changes, decide allocation should check
* before replacing the internal pool with a downstream pool.
* https://bugzilla.gnome.org/show_bug.cgi?id=704769
* https://bugzilla.libav.org/show_bug.cgi?id=556
*/
g_assert (picture->linesize[c] == ffmpegdec->stride[c]);
} else {
picture->data[c] = NULL;
picture->linesize[c] = 0;
}
GST_LOG_OBJECT (ffmpegdec, "linesize %d, data %p", picture->linesize[c],
picture->data[c]);
}
if ((flags & AV_GET_BUFFER_FLAG_REF) == AV_GET_BUFFER_FLAG_REF) {
/* decoder might reuse this AVFrame and it would result to no more
* get_buffer() call if the AVFrame's AVBuffer is writable
* (meaning that the refcount of AVBuffer == 1).
* To enforce get_buffer() for the every output frame, set read-only flag here
*/
create_buffer_flags = AV_BUFFER_FLAG_READONLY;
}
picture->buf[0] = av_buffer_create (NULL,
0, dummy_free_buffer, dframe, create_buffer_flags);
GST_LOG_OBJECT (ffmpegdec, "returned frame %p", dframe->buffer);
return 0;
no_dr:
{
int c;
int ret = avcodec_default_get_buffer2 (context, picture, flags);
GST_LOG_OBJECT (ffmpegdec, "direct rendering disabled, fallback alloc");
for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
ffmpegdec->stride[c] = picture->linesize[c];
}
/* Wrap our buffer around the default one to be able to have a callback
* when our data can be freed. Just putting our data into the first free
* buffer might not work if there are too many allocated already
*/
if (picture->buf[0]) {
dframe->avbuffer = picture->buf[0];
picture->buf[0] =
av_buffer_create (picture->buf[0]->data, picture->buf[0]->size,
dummy_free_buffer, dframe, 0);
} else {
picture->buf[0] =
av_buffer_create (NULL, 0, dummy_free_buffer, dframe, 0);
}
return ret;
}
alloc_failed:
{
GST_ELEMENT_ERROR (ffmpegdec, RESOURCE, FAILED,
("Unable to allocate memory"),
("The downstream pool failed to allocated buffer."));
return -1;
}
map_failed:
{
GST_ELEMENT_ERROR (ffmpegdec, RESOURCE, OPEN_READ_WRITE,
("Cannot access memory for read and write operation."),
("The video memory allocated from downstream pool could not mapped for"
" read and write."));
return -1;
}
duplicate_frame:
{
GST_WARNING_OBJECT (ffmpegdec, "already alloc'ed output buffer for frame");
gst_video_codec_frame_unref (frame);
return -1;
}
no_frame:
{
GST_WARNING_OBJECT (ffmpegdec, "Couldn't get codec frame !");
return -1;
}
}
static gboolean
picture_changed (GstFFMpegVidDec * ffmpegdec, AVFrame * picture,
gboolean one_field)
{
gint pic_field_order = 0;
if (one_field) {
pic_field_order = ffmpegdec->pic_field_order;
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(60, 31, 100)
} else if (picture->flags & AV_FRAME_FLAG_INTERLACED) {
#else
} else if (picture->interlaced_frame) {
#endif
if (picture->repeat_pict)
pic_field_order |= GST_VIDEO_BUFFER_FLAG_RFF;
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(60, 31, 100)
if (picture->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST)
#else
if (picture->top_field_first)
#endif
pic_field_order |= GST_VIDEO_BUFFER_FLAG_TFF;
}
return !(ffmpegdec->pic_width == picture->width
&& ffmpegdec->pic_height == picture->height
&& ffmpegdec->pic_pix_fmt == picture->format
&& ffmpegdec->pic_par_n == picture->sample_aspect_ratio.num
&& ffmpegdec->pic_par_d == picture->sample_aspect_ratio.den
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(60, 31, 100)
&& ffmpegdec->pic_interlaced ==
(picture->flags & AV_FRAME_FLAG_INTERLACED)
#else
&& ffmpegdec->pic_interlaced == picture->interlaced_frame
#endif
&& ffmpegdec->pic_field_order == pic_field_order
&& ffmpegdec->cur_multiview_mode == ffmpegdec->picture_multiview_mode
&& ffmpegdec->cur_multiview_flags == ffmpegdec->picture_multiview_flags);
}
static gboolean
context_changed (GstFFMpegVidDec * ffmpegdec, AVCodecContext * context)
{
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(60, 31, 100)
const gint ticks_per_frame =
(GST_VIDEO_INFO_IS_INTERLACED (&ffmpegdec->input_state->info)
&& ffmpegdec->context->codec_descriptor
&& ffmpegdec->context->
codec_descriptor->props & AV_CODEC_PROP_FIELDS) ? 2 : 1;
#else
const gint ticks_per_frame = context->ticks_per_frame;
#endif
return !(ffmpegdec->ctx_ticks == ticks_per_frame
&& ffmpegdec->ctx_time_n == context->time_base.num
&& ffmpegdec->ctx_time_d == context->time_base.den);
}
static gboolean
update_video_context (GstFFMpegVidDec * ffmpegdec, AVCodecContext * context,
AVFrame * picture, gboolean one_field)
{
gint pic_field_order = 0;
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(60, 31, 100)
if (picture->flags & AV_FRAME_FLAG_INTERLACED) {
#else
if (picture->interlaced_frame) {
#endif
if (picture->repeat_pict)
pic_field_order |= GST_VIDEO_BUFFER_FLAG_RFF;
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(60, 31, 100)
if (picture->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST)
#else
if (picture->top_field_first)
#endif
pic_field_order |= GST_VIDEO_BUFFER_FLAG_TFF;
}
if (!picture_changed (ffmpegdec, picture, one_field)
&& !context_changed (ffmpegdec, context))
return FALSE;
GST_DEBUG_OBJECT (ffmpegdec,
"Renegotiating video from %dx%d@ %d:%d PAR %d/%d fps pixfmt %d to %dx%d@ %d:%d PAR %d/%d fps pixfmt %d",
ffmpegdec->pic_width, ffmpegdec->pic_height,
ffmpegdec->pic_par_n, ffmpegdec->pic_par_d,
ffmpegdec->ctx_time_n, ffmpegdec->ctx_time_d,
ffmpegdec->pic_pix_fmt,
picture->width, picture->height,
picture->sample_aspect_ratio.num,
picture->sample_aspect_ratio.den,
context->time_base.num, context->time_base.den, picture->format);
ffmpegdec->pic_pix_fmt = picture->format;
ffmpegdec->pic_width = picture->width;
ffmpegdec->pic_height = picture->height;
ffmpegdec->pic_par_n = picture->sample_aspect_ratio.num;
ffmpegdec->pic_par_d = picture->sample_aspect_ratio.den;
ffmpegdec->cur_multiview_mode = ffmpegdec->picture_multiview_mode;
ffmpegdec->cur_multiview_flags = ffmpegdec->picture_multiview_flags;
/* Remember if we have interlaced content and the field order changed
* at least once. If that happens, we must be interlace-mode=mixed
*/
if (ffmpegdec->pic_field_order_changed ||
(ffmpegdec->pic_field_order != pic_field_order &&
ffmpegdec->pic_interlaced))
ffmpegdec->pic_field_order_changed = TRUE;
ffmpegdec->pic_field_order = pic_field_order;
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(60, 31, 100)
ffmpegdec->pic_interlaced = picture->flags & AV_FRAME_FLAG_INTERLACED;
#else
ffmpegdec->pic_interlaced = picture->interlaced_frame;
#endif
if (!ffmpegdec->pic_interlaced)
ffmpegdec->pic_field_order_changed = FALSE;
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(60, 31, 100)
const gint ticks_per_frame =
(GST_VIDEO_INFO_IS_INTERLACED (&ffmpegdec->input_state->info)
&& ffmpegdec->context->codec_descriptor
&& ffmpegdec->context->
codec_descriptor->props & AV_CODEC_PROP_FIELDS) ? 2 : 1;
#else
const gint ticks_per_frame = context->ticks_per_frame;
#endif
ffmpegdec->ctx_ticks = ticks_per_frame;
ffmpegdec->ctx_time_n = context->time_base.num;
ffmpegdec->ctx_time_d = context->time_base.den;
return TRUE;
}
static void
gst_ffmpegviddec_update_par (GstFFMpegVidDec * ffmpegdec,
GstVideoInfo * in_info, GstVideoInfo * out_info)
{
gboolean demuxer_par_set = FALSE;
gboolean decoder_par_set = FALSE;
gint demuxer_num = 1, demuxer_denom = 1;
gint decoder_num = 1, decoder_denom = 1;
GstVideoCodecFrame *out_frame;
GstFFMpegVidDecVideoFrame *out_dframe;
if (in_info->par_n && in_info->par_d) {
demuxer_num = in_info->par_n;
demuxer_denom = in_info->par_d;
demuxer_par_set = TRUE;
GST_DEBUG_OBJECT (ffmpegdec, "Demuxer PAR: %d:%d", demuxer_num,
demuxer_denom);
}
if (ffmpegdec->pic_par_n && ffmpegdec->pic_par_d) {
decoder_num = ffmpegdec->pic_par_n;
decoder_denom = ffmpegdec->pic_par_d;
decoder_par_set = TRUE;
GST_DEBUG_OBJECT (ffmpegdec, "Decoder PAR: %d:%d", decoder_num,
decoder_denom);
}
if (!demuxer_par_set && !decoder_par_set)
goto no_par;
if (demuxer_par_set && !decoder_par_set)
goto use_demuxer_par;
if (decoder_par_set && !demuxer_par_set)
goto use_decoder_par;
/* Special case for some encoders which provide an 1:2 pixel aspect ratio
* for HEVC interlaced content, possibly to work around decoders that don't
* support field-based interlacing. Add some defensive checks to check for
* a "common" aspect ratio. */
out_dframe = ffmpegdec->picture->opaque;
out_frame = out_dframe->frame;
if (demuxer_num == 1 && demuxer_denom == 1 &&
decoder_num == 1 && decoder_denom == 2 &&
GST_BUFFER_FLAG_IS_SET (out_frame->input_buffer,
GST_VIDEO_BUFFER_FLAG_ONEFIELD) &&
gst_video_is_common_aspect_ratio (ffmpegdec->pic_width,
ffmpegdec->pic_height, 1, 2) &&
!gst_video_is_common_aspect_ratio (ffmpegdec->pic_width,
ffmpegdec->pic_height, 1, 1)) {
GST_WARNING_OBJECT (ffmpegdec,
"PAR 1/2 makes the aspect ratio of "
"a %d x %d frame uncommon. Switching to 1/1",
ffmpegdec->pic_width, ffmpegdec->pic_height);
goto use_demuxer_par;
}
/* Both the demuxer and the decoder provide a PAR. If one of
* the two PARs is 1:1 and the other one is not, use the one
* that is not 1:1. */
if (demuxer_num == demuxer_denom && decoder_num != decoder_denom) {
goto use_decoder_par;
}
if (decoder_num == decoder_denom && demuxer_num != demuxer_denom) {
goto use_demuxer_par;
}
/* Both PARs are non-1:1, so use the PAR provided by the demuxer */
goto use_demuxer_par;
use_decoder_par:
{
GST_DEBUG_OBJECT (ffmpegdec,
"Setting decoder provided pixel-aspect-ratio of %u:%u", decoder_num,
decoder_denom);
out_info->par_n = decoder_num;
out_info->par_d = decoder_denom;
return;
}
use_demuxer_par:
{
GST_DEBUG_OBJECT (ffmpegdec,
"Setting demuxer provided pixel-aspect-ratio of %u:%u", demuxer_num,
demuxer_denom);
out_info->par_n = demuxer_num;
out_info->par_d = demuxer_denom;
return;
}
no_par:
{
GST_DEBUG_OBJECT (ffmpegdec,
"Neither demuxer nor codec provide a pixel-aspect-ratio");
out_info->par_n = 1;
out_info->par_d = 1;
return;
}
}
static GstVideoMultiviewMode
stereo_av_to_gst (enum AVStereo3DType type)
{
switch (type) {
case AV_STEREO3D_SIDEBYSIDE:
return GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE;
case AV_STEREO3D_TOPBOTTOM:
return GST_VIDEO_MULTIVIEW_MODE_TOP_BOTTOM;
case AV_STEREO3D_FRAMESEQUENCE:
return GST_VIDEO_MULTIVIEW_MODE_FRAME_BY_FRAME;
case AV_STEREO3D_CHECKERBOARD:
return GST_VIDEO_MULTIVIEW_MODE_CHECKERBOARD;
case AV_STEREO3D_SIDEBYSIDE_QUINCUNX:
return GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE_QUINCUNX;
case AV_STEREO3D_LINES:
return GST_VIDEO_MULTIVIEW_MODE_ROW_INTERLEAVED;
case AV_STEREO3D_COLUMNS:
return GST_VIDEO_MULTIVIEW_MODE_COLUMN_INTERLEAVED;
default:
break;
}
return GST_VIDEO_MULTIVIEW_MODE_NONE;
}
static gboolean
mastering_display_metadata_av_to_gst (AVMasteringDisplayMetadata * av,
GstVideoMasteringDisplayInfo * gst)
{
const guint64 chroma_scale = 50000;
const guint64 luma_scale = 10000;
gint i;
/* Use only complete mastering meta */
if (!av->has_primaries || !av->has_luminance)
return FALSE;
for (i = 0; i < G_N_ELEMENTS (gst->display_primaries); i++) {
gst->display_primaries[i].x = (guint16) gst_util_uint64_scale (chroma_scale,
av->display_primaries[i][0].num, av->display_primaries[i][0].den);
gst->display_primaries[i].y = (guint16) gst_util_uint64_scale (chroma_scale,
av->display_primaries[i][1].num, av->display_primaries[i][1].den);
}
gst->white_point.x = (guint16) gst_util_uint64_scale (chroma_scale,
av->white_point[0].num, av->white_point[0].den);
gst->white_point.y = (guint16) gst_util_uint64_scale (chroma_scale,
av->white_point[1].num, av->white_point[1].den);
gst->max_display_mastering_luminance =
(guint32) gst_util_uint64_scale (luma_scale,
av->max_luminance.num, av->max_luminance.den);
gst->min_display_mastering_luminance =
(guint32) gst_util_uint64_scale (luma_scale,
av->min_luminance.num, av->min_luminance.den);
return TRUE;
}
static gboolean
content_light_metadata_av_to_gst (AVContentLightMetadata * av,
GstVideoContentLightLevel * gst)
{
gst->max_content_light_level = av->MaxCLL;
gst->max_frame_average_light_level = av->MaxFALL;
return TRUE;
}
static gboolean
gst_ffmpegviddec_negotiate (GstFFMpegVidDec * ffmpegdec,
AVCodecContext * context, AVFrame * picture, GstBufferFlags flags)
{
GstVideoFormat fmt;
GstVideoInfo *in_info, *out_info;
GstVideoCodecState *output_state;
gint fps_n, fps_d;
GstClockTime latency;
GstStructure *in_s;
GstVideoInterlaceMode interlace_mode;
gint caps_height;
gboolean one_field = !!(flags & GST_VIDEO_BUFFER_FLAG_ONEFIELD);
if (!update_video_context (ffmpegdec, context, picture, one_field))
return TRUE;
caps_height = ffmpegdec->pic_height;
fmt = gst_ffmpeg_pixfmt_to_videoformat (ffmpegdec->pic_pix_fmt);
if (G_UNLIKELY (fmt == GST_VIDEO_FORMAT_UNKNOWN))
goto unknown_format;
/* set the interlaced flag */
in_s = gst_caps_get_structure (ffmpegdec->input_state->caps, 0);
if (flags & GST_VIDEO_BUFFER_FLAG_ONEFIELD) {
/* TODO: we don't get that information from ffmpeg, so copy it from
* the parser */
interlace_mode = GST_VIDEO_INTERLACE_MODE_ALTERNATE;
caps_height = 2 * caps_height;
} else if (!gst_structure_has_field (in_s, "interlace-mode")) {
if (ffmpegdec->pic_interlaced) {
if (ffmpegdec->pic_field_order_changed ||
(ffmpegdec->pic_field_order & GST_VIDEO_BUFFER_FLAG_RFF)) {
interlace_mode = GST_VIDEO_INTERLACE_MODE_MIXED;
} else {
interlace_mode = GST_VIDEO_INTERLACE_MODE_INTERLEAVED;
}
} else {
interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
}
} else {
GstVideoInfo info;
gst_video_info_from_caps (&info, ffmpegdec->input_state->caps);
interlace_mode = info.interlace_mode;
}
if (interlace_mode == GST_VIDEO_INTERLACE_MODE_ALTERNATE)
output_state =
gst_video_decoder_set_interlaced_output_state (GST_VIDEO_DECODER
(ffmpegdec), fmt, interlace_mode, ffmpegdec->pic_width, caps_height,
ffmpegdec->input_state);
else
output_state =
gst_video_decoder_set_output_state (GST_VIDEO_DECODER
(ffmpegdec), fmt, ffmpegdec->pic_width, caps_height,
ffmpegdec->input_state);
if (ffmpegdec->output_state)
gst_video_codec_state_unref (ffmpegdec->output_state);
ffmpegdec->output_state = output_state;
in_info = &ffmpegdec->input_state->info;
out_info = &ffmpegdec->output_state->info;
out_info->interlace_mode = interlace_mode;
if (!gst_structure_has_field (in_s, "interlace-mode")
&& interlace_mode == GST_VIDEO_INTERLACE_MODE_INTERLEAVED) {
if ((ffmpegdec->pic_field_order & GST_VIDEO_BUFFER_FLAG_TFF))
GST_VIDEO_INFO_FIELD_ORDER (out_info) =
GST_VIDEO_FIELD_ORDER_TOP_FIELD_FIRST;
else
GST_VIDEO_INFO_FIELD_ORDER (out_info) =
GST_VIDEO_FIELD_ORDER_BOTTOM_FIELD_FIRST;
}
if (!gst_structure_has_field (in_s, "chroma-site")) {
switch (context->chroma_sample_location) {
case AVCHROMA_LOC_LEFT:
out_info->chroma_site = GST_VIDEO_CHROMA_SITE_MPEG2;
break;
case AVCHROMA_LOC_CENTER:
out_info->chroma_site = GST_VIDEO_CHROMA_SITE_JPEG;
break;
case AVCHROMA_LOC_TOPLEFT:
out_info->chroma_site = GST_VIDEO_CHROMA_SITE_DV;
break;
case AVCHROMA_LOC_TOP:
out_info->chroma_site = GST_VIDEO_CHROMA_SITE_V_COSITED;
break;
default:
break;
}
}
if (!gst_structure_has_field (in_s, "colorimetry")
|| in_info->colorimetry.primaries == GST_VIDEO_COLOR_PRIMARIES_UNKNOWN) {
out_info->colorimetry.primaries =
gst_video_color_primaries_from_iso (context->color_primaries);
}
if (!gst_structure_has_field (in_s, "colorimetry")
|| in_info->colorimetry.transfer == GST_VIDEO_TRANSFER_UNKNOWN) {
out_info->colorimetry.transfer =
gst_video_transfer_function_from_iso (context->color_trc);
}
if (!gst_structure_has_field (in_s, "colorimetry")
|| in_info->colorimetry.matrix == GST_VIDEO_COLOR_MATRIX_UNKNOWN) {
out_info->colorimetry.matrix =
gst_video_color_matrix_from_iso (context->colorspace);
}
if (!gst_structure_has_field (in_s, "colorimetry")
|| in_info->colorimetry.range == GST_VIDEO_COLOR_RANGE_UNKNOWN) {
if (context->color_range == AVCOL_RANGE_JPEG) {
out_info->colorimetry.range = GST_VIDEO_COLOR_RANGE_0_255;
} else if (context->color_range == AVCOL_RANGE_MPEG) {
out_info->colorimetry.range = GST_VIDEO_COLOR_RANGE_16_235;
} else {
out_info->colorimetry.range = GST_VIDEO_COLOR_RANGE_UNKNOWN;
}
}
/* try to find a good framerate */
if ((in_info->fps_d && in_info->fps_n)) {
/* take framerate from input when it was specified (#313970) */
fps_n = in_info->fps_n;
fps_d = in_info->fps_d;
} else {
fps_n = ffmpegdec->ctx_time_d;
fps_d = ffmpegdec->ctx_time_n * ffmpegdec->ctx_ticks;
if (!fps_d) {
GST_LOG_OBJECT (ffmpegdec, "invalid framerate: %d/0, -> %d/1", fps_n,
fps_n);
fps_d = 1;
}
if (gst_util_fraction_compare (fps_n, fps_d, 1000, 1) > 0) {
GST_LOG_OBJECT (ffmpegdec, "excessive framerate: %d/%d, -> 0/1", fps_n,
fps_d);
fps_n = 0;
fps_d = 1;
}
}
if (GST_VIDEO_INFO_FLAG_IS_SET (in_info, GST_VIDEO_FLAG_VARIABLE_FPS)) {
GST_LOG_OBJECT (ffmpegdec, "setting framerate: %d/%d", in_info->fps_n,
in_info->fps_d);
out_info->fps_n = in_info->fps_n;
out_info->fps_d = in_info->fps_d;
} else {
GST_LOG_OBJECT (ffmpegdec, "setting framerate: %d/%d", fps_n, fps_d);
out_info->fps_n = fps_n;
out_info->fps_d = fps_d;
}
/* calculate and update par now */
gst_ffmpegviddec_update_par (ffmpegdec, in_info, out_info);
GST_VIDEO_INFO_MULTIVIEW_MODE (out_info) = ffmpegdec->cur_multiview_mode;
GST_VIDEO_INFO_MULTIVIEW_FLAGS (out_info) = ffmpegdec->cur_multiview_flags;
/* To passing HDR information to caps directly */
if (output_state->caps == NULL) {
output_state->caps = gst_video_info_to_caps (out_info);
} else {
output_state->caps = gst_caps_make_writable (output_state->caps);
}
if (flags & GST_VIDEO_BUFFER_FLAG_ONEFIELD) {
/* TODO: we don't get that information from ffmpeg, so copy it from
* the parser */
gst_caps_features_add (gst_caps_get_features (ffmpegdec->output_state->caps,
0), GST_CAPS_FEATURE_FORMAT_INTERLACED);
}
if (!gst_structure_has_field (in_s, "mastering-display-info")) {
AVFrameSideData *sd = av_frame_get_side_data (picture,
AV_FRAME_DATA_MASTERING_DISPLAY_METADATA);
GstVideoMasteringDisplayInfo minfo;
if (sd
&& mastering_display_metadata_av_to_gst ((AVMasteringDisplayMetadata *)
sd->data, &minfo)) {
GST_LOG_OBJECT (ffmpegdec, "update mastering display info: "
"Red(%u, %u) "
"Green(%u, %u) "
"Blue(%u, %u) "
"White(%u, %u) "
"max_luminance(%u) "
"min_luminance(%u) ",
minfo.display_primaries[0].x, minfo.display_primaries[0].y,
minfo.display_primaries[1].x, minfo.display_primaries[1].y,
minfo.display_primaries[2].x, minfo.display_primaries[2].y,
minfo.white_point.x, minfo.white_point.y,
minfo.max_display_mastering_luminance,
minfo.min_display_mastering_luminance);
if (!gst_video_mastering_display_info_add_to_caps (&minfo,
output_state->caps)) {
GST_WARNING_OBJECT (ffmpegdec,
"Couldn't set mastering display info to caps");
}
}
}
if (!gst_structure_has_field (in_s, "content-light-level")) {
AVFrameSideData *sd = av_frame_get_side_data (picture,
AV_FRAME_DATA_CONTENT_LIGHT_LEVEL);
GstVideoContentLightLevel cll;
if (sd && content_light_metadata_av_to_gst ((AVContentLightMetadata *)
sd->data, &cll)) {
GST_LOG_OBJECT (ffmpegdec, "update content light level: "
"maxCLL:(%u), maxFALL:(%u)", cll.max_content_light_level,
cll.max_frame_average_light_level);
if (!gst_video_content_light_level_add_to_caps (&cll, output_state->caps)) {
GST_WARNING_OBJECT (ffmpegdec,
"Couldn't set content light level to caps");
}
}
}
if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (ffmpegdec)))
goto negotiate_failed;
/* The decoder is configured, we now know the true latency */
if (fps_n) {
latency =
gst_util_uint64_scale_ceil (ffmpegdec->context->has_b_frames *
GST_SECOND, fps_d, fps_n);
if (ffmpegdec->context->thread_type & FF_THREAD_FRAME) {
latency +=
gst_util_uint64_scale_ceil (ffmpegdec->context->thread_count *
GST_SECOND, fps_d, fps_n);
}
gst_video_decoder_set_latency (GST_VIDEO_DECODER (ffmpegdec), latency,
latency);
}
return TRUE;
/* ERRORS */
unknown_format:
{
GST_ERROR_OBJECT (ffmpegdec,
"decoder requires a video format unsupported by GStreamer");
return FALSE;
}
negotiate_failed:
{
/* Reset so we try again next time even if force==FALSE */
ffmpegdec->pic_pix_fmt = 0;
ffmpegdec->pic_width = 0;
ffmpegdec->pic_height = 0;
ffmpegdec->pic_par_n = 0;
ffmpegdec->pic_par_d = 0;
ffmpegdec->pic_interlaced = 0;
ffmpegdec->pic_field_order = 0;
ffmpegdec->pic_field_order_changed = FALSE;
ffmpegdec->ctx_ticks = 0;
ffmpegdec->ctx_time_n = 0;
ffmpegdec->ctx_time_d = 0;
GST_ERROR_OBJECT (ffmpegdec, "negotiation failed");
return FALSE;
}
}
/* perform qos calculations before decoding the next frame.
*
* Sets the skip_frame flag and if things are really bad, skips to the next
* keyframe.
*
*/
static void
gst_ffmpegviddec_do_qos (GstFFMpegVidDec * ffmpegdec,
GstVideoCodecFrame * frame, gboolean * mode_switch)
{
GstClockTimeDiff diff;
GstSegmentFlags skip_flags =
GST_VIDEO_DECODER_INPUT_SEGMENT (ffmpegdec).flags;
*mode_switch = FALSE;
if (frame == NULL)
return;
if (ffmpegdec->skip_frame != AVDISCARD_DEFAULT) {
/* A special skip frame mode is configured, ignore QOS. */
return;
}
if (skip_flags & GST_SEGMENT_FLAG_TRICKMODE_KEY_UNITS) {
ffmpegdec->context->skip_frame = AVDISCARD_NONKEY;
*mode_switch = TRUE;
} else if (skip_flags & GST_SEGMENT_FLAG_TRICKMODE) {
ffmpegdec->context->skip_frame = AVDISCARD_NONREF;
*mode_switch = TRUE;
}
if (*mode_switch == TRUE) {
/* We've already switched mode, we can return straight away
* without any further calculation */
return;
}
diff =
gst_video_decoder_get_max_decode_time (GST_VIDEO_DECODER (ffmpegdec),
frame);
/* if we don't have timing info, then we don't do QoS */
if (G_UNLIKELY (diff == G_MAXINT64)) {
/* Ensure the skipping strategy is the default one */
ffmpegdec->context->skip_frame = ffmpegdec->skip_frame;
return;
}
GST_DEBUG_OBJECT (ffmpegdec, "decoding time %" G_GINT64_FORMAT, diff);
if (diff > 0 && ffmpegdec->context->skip_frame != AVDISCARD_DEFAULT) {
ffmpegdec->context->skip_frame = AVDISCARD_DEFAULT;
*mode_switch = TRUE;
GST_DEBUG_OBJECT (ffmpegdec, "QOS: normal mode");
}
else if (diff <= 0 && ffmpegdec->context->skip_frame != AVDISCARD_NONREF) {
ffmpegdec->context->skip_frame = AVDISCARD_NONREF;
*mode_switch = TRUE;
GST_DEBUG_OBJECT (ffmpegdec,
"QOS: hurry up, diff %" G_GINT64_FORMAT " >= 0", diff);
}
}
/* get an outbuf buffer with the current picture */
static GstFlowReturn
get_output_buffer (GstFFMpegVidDec * ffmpegdec, GstVideoCodecFrame * frame)
{
GstFlowReturn ret = GST_FLOW_OK;
AVFrame pic, *outpic;
GstVideoFrame vframe;
GstVideoInfo *info;
guint c;
GST_LOG_OBJECT (ffmpegdec, "get output buffer");
if (!ffmpegdec->output_state)
goto not_negotiated;
ret =
gst_video_decoder_allocate_output_frame (GST_VIDEO_DECODER (ffmpegdec),
frame);
if (G_UNLIKELY (ret != GST_FLOW_OK))
goto alloc_failed;
/* original ffmpeg code does not handle odd sizes correctly.
* This patched up version does */
/* Fill avpicture */
info = &ffmpegdec->output_state->info;
if (!gst_video_frame_map (&vframe, info, frame->output_buffer,
GST_MAP_READ | GST_MAP_WRITE))
goto map_failed;
memset (&pic, 0, sizeof (pic));
pic.format = ffmpegdec->pic_pix_fmt;
pic.width = GST_VIDEO_FRAME_WIDTH (&vframe);
pic.height = GST_VIDEO_FRAME_HEIGHT (&vframe);
for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
if (c < GST_VIDEO_INFO_N_PLANES (info)) {
pic.data[c] = GST_VIDEO_FRAME_PLANE_DATA (&vframe, c);
pic.linesize[c] = GST_VIDEO_FRAME_PLANE_STRIDE (&vframe, c);
GST_LOG_OBJECT (ffmpegdec, "[%i] linesize %d, data %p", c,
pic.linesize[c], pic.data[c]);
} else {
pic.data[c] = NULL;
pic.linesize[c] = 0;
}
}
outpic = ffmpegdec->picture;
if (av_frame_copy (&pic, outpic) != 0) {
GST_ERROR_OBJECT (ffmpegdec, "Failed to copy output frame");
ret = GST_FLOW_ERROR;
}
gst_video_frame_unmap (&vframe);
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT (60, 31, 100)
ffmpegdec->picture->reordered_opaque = -1;
#endif
return ret;
/* special cases */
alloc_failed:
{
GST_ELEMENT_ERROR (ffmpegdec, RESOURCE, FAILED,
("Unable to allocate memory"),
("The downstream pool failed to allocated buffer."));
return ret;
}
map_failed:
{
GST_ELEMENT_ERROR (ffmpegdec, RESOURCE, OPEN_READ_WRITE,
("Cannot access memory for read and write operation."),
("The video memory allocated from downstream pool could not mapped for"
" read and write."));
return ret;
}
not_negotiated:
{
GST_DEBUG_OBJECT (ffmpegdec, "not negotiated");
return GST_FLOW_NOT_NEGOTIATED;
}
}
/*
* Returns: whether a frame was decoded
*/
static gboolean
gst_ffmpegviddec_video_frame (GstFFMpegVidDec * ffmpegdec,
GstVideoCodecFrame * input_frame, GstFlowReturn * ret)
{
gint res;
gboolean got_frame = FALSE;
gboolean mode_switch;
GstVideoCodecFrame *output_frame;
GstFFMpegVidDecVideoFrame *out_dframe;
GstBufferPool *pool;
if (G_UNLIKELY (!ffmpegdec->context))
goto no_codec;
#if LIBAVCODEC_VERSION_MAJOR >= 60
ffmpegdec->context->frame_num++;
#else
ffmpegdec->context->frame_number++;
#endif
*ret = GST_FLOW_OK;
/* in case we skip frames */
ffmpegdec->picture->pict_type = -1;
/* run QoS code, we don't stop decoding the frame when we are late because
* else we might skip a reference frame */
gst_ffmpegviddec_do_qos (ffmpegdec, input_frame, &mode_switch);
/* FFmpeg might request new buffer from other threads.
* Release lock here */
GST_VIDEO_DECODER_STREAM_UNLOCK (ffmpegdec);
res = avcodec_receive_frame (ffmpegdec->context, ffmpegdec->picture);
GST_VIDEO_DECODER_STREAM_LOCK (ffmpegdec);
/* No frames available at this time */
if (res == AVERROR (EAGAIN)) {
GST_DEBUG_OBJECT (ffmpegdec, "Need more data");
goto beach;
} else if (res == AVERROR_EOF) {
*ret = GST_FLOW_EOS;
GST_DEBUG_OBJECT (ffmpegdec, "Context was entirely flushed");
goto beach;
} else if (res < 0) {
GST_VIDEO_DECODER_ERROR (ffmpegdec, 1, STREAM, DECODE, (NULL),
("Video decoding error"), *ret);
goto beach;
}
got_frame = TRUE;
/* get the output picture timing info again */
out_dframe = ffmpegdec->picture->opaque;
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT (60, 31, 100)
output_frame =
gst_video_codec_frame_ref (av_buffer_get_opaque (ffmpegdec->
picture->opaque_ref));
#else
g_assert (out_dframe);
output_frame = gst_video_codec_frame_ref (out_dframe->frame);
#endif
/* also give back a buffer allocated by the frame, if any */
if (out_dframe) {
gst_buffer_replace (&output_frame->output_buffer, out_dframe->buffer);
gst_buffer_replace (&out_dframe->buffer, NULL);
}
/* Extract auxilliary info not stored in the main AVframe */
{
GstVideoInfo *in_info = &ffmpegdec->input_state->info;
/* Take multiview mode from upstream if present */
ffmpegdec->picture_multiview_mode = GST_VIDEO_INFO_MULTIVIEW_MODE (in_info);
ffmpegdec->picture_multiview_flags =
GST_VIDEO_INFO_MULTIVIEW_FLAGS (in_info);
/* Otherwise, see if there's info in the frame */
if (ffmpegdec->picture_multiview_mode == GST_VIDEO_MULTIVIEW_MODE_NONE) {
AVFrameSideData *side_data =
av_frame_get_side_data (ffmpegdec->picture, AV_FRAME_DATA_STEREO3D);
if (side_data) {
AVStereo3D *stereo = (AVStereo3D *) side_data->data;
ffmpegdec->picture_multiview_mode = stereo_av_to_gst (stereo->type);
if (stereo->flags & AV_STEREO3D_FLAG_INVERT) {
ffmpegdec->picture_multiview_flags =
GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_VIEW_FIRST;
} else {
ffmpegdec->picture_multiview_flags = GST_VIDEO_MULTIVIEW_FLAGS_NONE;
}
}
}
}
GST_DEBUG_OBJECT (ffmpegdec,
"pts %" G_GUINT64_FORMAT " duration %" G_GUINT64_FORMAT,
output_frame->pts, output_frame->duration);
GST_DEBUG_OBJECT (ffmpegdec, "picture: pts %" G_GUINT64_FORMAT,
(guint64) ffmpegdec->picture->pts);
#if LIBAVUTIL_VERSION_MAJOR < 58
GST_DEBUG_OBJECT (ffmpegdec, "picture: num %d",
ffmpegdec->picture->coded_picture_number);
GST_DEBUG_OBJECT (ffmpegdec, "picture: display %d",
ffmpegdec->picture->display_picture_number);
#endif
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT (60, 31, 100)
GST_DEBUG_OBJECT (ffmpegdec, "picture: opaque_ref %p",
ffmpegdec->picture->opaque_ref);
#else
GST_DEBUG_OBJECT (ffmpegdec, "picture: reordered opaque %" G_GUINT64_FORMAT,
(guint64) ffmpegdec->picture->reordered_opaque);
#endif
GST_DEBUG_OBJECT (ffmpegdec, "picture: opaque %p",
ffmpegdec->picture->opaque);
GST_DEBUG_OBJECT (ffmpegdec, "repeat_pict:%d",
ffmpegdec->picture->repeat_pict);
GST_DEBUG_OBJECT (ffmpegdec, "corrupted frame: %d",
!!(ffmpegdec->picture->flags & AV_FRAME_FLAG_CORRUPT));
if (!gst_ffmpegviddec_negotiate (ffmpegdec, ffmpegdec->context,
ffmpegdec->picture, GST_BUFFER_FLAGS (output_frame->input_buffer)))
goto negotiation_error;
pool = gst_video_decoder_get_buffer_pool (GST_VIDEO_DECODER (ffmpegdec));
if (G_UNLIKELY (output_frame->output_buffer == NULL)) {
*ret = get_output_buffer (ffmpegdec, output_frame);
} else if (G_UNLIKELY (output_frame->output_buffer->pool != pool)) {
GstBuffer *tmp = output_frame->output_buffer;
output_frame->output_buffer = NULL;
*ret = get_output_buffer (ffmpegdec, output_frame);
gst_buffer_unref (tmp);
}
#ifndef G_DISABLE_ASSERT
else {
GstVideoMeta *vmeta =
gst_buffer_get_video_meta (output_frame->output_buffer);
if (vmeta) {
GstVideoInfo *info = &ffmpegdec->output_state->info;
g_assert ((gint) vmeta->width == GST_VIDEO_INFO_WIDTH (info));
g_assert ((gint) vmeta->height == GST_VIDEO_INFO_HEIGHT (info));
}
}
#endif
gst_object_unref (pool);
if (G_UNLIKELY (*ret != GST_FLOW_OK))
goto no_output;
/* Mark corrupted frames as corrupted */
if (ffmpegdec->picture->flags & AV_FRAME_FLAG_CORRUPT)
GST_BUFFER_FLAG_SET (output_frame->output_buffer,
GST_BUFFER_FLAG_CORRUPTED);
if (ffmpegdec->pic_interlaced) {
/* set interlaced flags */
if (ffmpegdec->picture->repeat_pict)
GST_BUFFER_FLAG_SET (output_frame->output_buffer,
GST_VIDEO_BUFFER_FLAG_RFF);
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(60, 31, 100)
if (ffmpegdec->picture->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST)
#else
if (ffmpegdec->picture->top_field_first)
#endif
GST_BUFFER_FLAG_SET (output_frame->output_buffer,
GST_VIDEO_BUFFER_FLAG_TFF);
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(60, 31, 100)
if (ffmpegdec->picture->flags & AV_FRAME_FLAG_INTERLACED)
#else
if (ffmpegdec->picture->interlaced_frame)
#endif
GST_BUFFER_FLAG_SET (output_frame->output_buffer,
GST_VIDEO_BUFFER_FLAG_INTERLACED);
}
{
AVFrameSideData *side_data =
av_frame_get_side_data (ffmpegdec->picture, AV_FRAME_DATA_A53_CC);
if (side_data) {
GST_LOG_OBJECT (ffmpegdec,
"Found CC side data of type AV_FRAME_DATA_A53_CC, size %d",
(int) side_data->size);
GST_MEMDUMP ("A53 CC", side_data->data, side_data->size);
/* do not add closed caption meta if it already exists */
if (!gst_buffer_get_meta (output_frame->input_buffer,
GST_VIDEO_CAPTION_META_API_TYPE)) {
output_frame->output_buffer =
gst_buffer_make_writable (output_frame->output_buffer);
gst_buffer_add_video_caption_meta (output_frame->output_buffer,
GST_VIDEO_CAPTION_TYPE_CEA708_RAW, side_data->data,
side_data->size);
} else {
GST_LOG_OBJECT (ffmpegdec,
"Closed caption meta already exists: will not add new caption meta");
}
}
}
/* cleaning time */
/* so we decoded this frame, frames preceding it in decoding order
* that still do not have a buffer allocated seem rather useless,
* and can be discarded, due to e.g. misparsed bogus frame
* or non-keyframe in skipped decoding, ...
* In any case, not likely to be seen again, so discard those,
* before they pile up and/or mess with timestamping */
{
GList *l, *ol;
GstVideoDecoder *dec = GST_VIDEO_DECODER (ffmpegdec);
gboolean old = TRUE;
ol = l = gst_video_decoder_get_frames (dec);
while (l) {
GstVideoCodecFrame *tmp = l->data;
if (tmp == output_frame)
old = FALSE;
if (old && GST_VIDEO_CODEC_FRAME_IS_DECODE_ONLY (tmp)) {
GST_LOG_OBJECT (dec,
"discarding ghost frame %p (#%d) PTS:%" GST_TIME_FORMAT " DTS:%"
GST_TIME_FORMAT, tmp, tmp->system_frame_number,
GST_TIME_ARGS (tmp->pts), GST_TIME_ARGS (tmp->dts));
/* drop extra ref and remove from frame list */
GST_VIDEO_CODEC_FRAME_FLAG_UNSET (tmp,
GST_FFMPEG_VIDEO_CODEC_FRAME_FLAG_ALLOCATED);
gst_video_decoder_release_frame (dec, tmp);
} else {
/* drop extra ref we got */
gst_video_codec_frame_unref (tmp);
}
l = l->next;
}
g_list_free (ol);
}
av_frame_unref (ffmpegdec->picture);
if (input_frame)
GST_VIDEO_CODEC_FRAME_FLAG_UNSET (input_frame,
GST_FFMPEG_VIDEO_CODEC_FRAME_FLAG_ALLOCATED);
if (gst_video_decoder_get_subframe_mode (GST_VIDEO_DECODER (ffmpegdec)))
gst_video_decoder_have_last_subframe (GST_VIDEO_DECODER (ffmpegdec),
output_frame);
/* FIXME: Ideally we would remap the buffer read-only now before pushing but
* libav might still have a reference to it!
*/
if (GST_BUFFER_FLAG_IS_SET (output_frame->input_buffer,
GST_VIDEO_BUFFER_FLAG_ONEFIELD)) {
GST_BUFFER_FLAG_SET (output_frame->output_buffer,
GST_VIDEO_BUFFER_FLAG_ONEFIELD);
if (GST_BUFFER_FLAG_IS_SET (output_frame->input_buffer,
GST_VIDEO_BUFFER_FLAG_TFF)) {
GST_BUFFER_FLAG_SET (output_frame->output_buffer,
GST_VIDEO_BUFFER_FLAG_TFF);
}
}
/* Temporarily release the video decoder stream lock so that other
* threads can continue decoding (e.g. call get_frame()) while data
* is being pushed downstream.
*/
GST_VIDEO_DECODER_STREAM_UNLOCK (ffmpegdec);
*ret =
gst_video_decoder_finish_frame (GST_VIDEO_DECODER (ffmpegdec),
output_frame);
GST_VIDEO_DECODER_STREAM_LOCK (ffmpegdec);
beach:
GST_DEBUG_OBJECT (ffmpegdec, "return flow %s, got frame: %d",
gst_flow_get_name (*ret), got_frame);
return got_frame;
/* special cases */
no_output:
{
GST_DEBUG_OBJECT (ffmpegdec, "no output buffer");
GST_VIDEO_CODEC_FRAME_FLAG_UNSET (input_frame,
GST_FFMPEG_VIDEO_CODEC_FRAME_FLAG_ALLOCATED);
gst_video_decoder_drop_frame (GST_VIDEO_DECODER (ffmpegdec), output_frame);
goto beach;
}
negotiation_error:
{
gst_video_decoder_drop_frame (GST_VIDEO_DECODER (ffmpegdec), output_frame);
if (GST_PAD_IS_FLUSHING (GST_VIDEO_DECODER_SRC_PAD (ffmpegdec))) {
*ret = GST_FLOW_FLUSHING;
goto beach;
}
GST_WARNING_OBJECT (ffmpegdec, "Error negotiating format");
*ret = GST_FLOW_NOT_NEGOTIATED;
goto beach;
}
no_codec:
{
GST_ERROR_OBJECT (ffmpegdec, "no codec context");
*ret = GST_FLOW_NOT_NEGOTIATED;
goto beach;
}
}
static GstFlowReturn
gst_ffmpegviddec_drain (GstVideoDecoder * decoder)
{
GstFFMpegVidDec *ffmpegdec = GST_FFMPEGVIDDEC (decoder);
GstFlowReturn ret = GST_FLOW_OK;
gboolean got_frame = FALSE;
if (!ffmpegdec->context)
return GST_FLOW_OK;
GST_VIDEO_DECODER_STREAM_UNLOCK (ffmpegdec);
if (avcodec_send_packet (ffmpegdec->context, NULL)) {
GST_VIDEO_DECODER_STREAM_LOCK (ffmpegdec);
goto send_packet_failed;
}
GST_VIDEO_DECODER_STREAM_LOCK (ffmpegdec);
do {
got_frame = gst_ffmpegviddec_video_frame (ffmpegdec, NULL, &ret);
} while (got_frame && ret == GST_FLOW_OK);
GST_VIDEO_DECODER_STREAM_UNLOCK (ffmpegdec);
avcodec_flush_buffers (ffmpegdec->context);
GST_VIDEO_DECODER_STREAM_LOCK (ffmpegdec);
/* FFMpeg will return AVERROR_EOF if it's internal was fully drained
* then we are translating it to GST_FLOW_EOS. However, because this behavior
* is fully internal stuff of this implementation and gstvideodecoder
* baseclass doesn't convert this GST_FLOW_EOS to GST_FLOW_OK,
* convert this flow returned here */
if (ret == GST_FLOW_EOS)
ret = GST_FLOW_OK;
done:
return ret;
send_packet_failed:
GST_WARNING_OBJECT (ffmpegdec, "send packet failed, could not drain decoder");
goto done;
}
static GstFlowReturn
gst_ffmpegviddec_handle_frame (GstVideoDecoder * decoder,
GstVideoCodecFrame * frame)
{
GstFFMpegVidDec *ffmpegdec = GST_FFMPEGVIDDEC (decoder);
guint8 *data;
gint size;
gboolean got_frame;
GstMapInfo minfo;
GstFlowReturn ret = GST_FLOW_OK;
AVPacket *packet;
if (G_UNLIKELY (!ffmpegdec->context)) {
gst_video_codec_frame_unref (frame);
GST_ERROR_OBJECT (ffmpegdec, "no codec context");
return GST_FLOW_NOT_NEGOTIATED;
}
GST_LOG_OBJECT (ffmpegdec,
"Received new data of size %" G_GSIZE_FORMAT ", dts %" GST_TIME_FORMAT
", pts:%" GST_TIME_FORMAT ", dur:%" GST_TIME_FORMAT,
gst_buffer_get_size (frame->input_buffer), GST_TIME_ARGS (frame->dts),
GST_TIME_ARGS (frame->pts), GST_TIME_ARGS (frame->duration));
if (!gst_buffer_map (frame->input_buffer, &minfo, GST_MAP_READ)) {
GST_ELEMENT_ERROR (ffmpegdec, STREAM, DECODE, ("Decoding problem"),
("Failed to map buffer for reading"));
gst_video_codec_frame_unref (frame);
return GST_FLOW_ERROR;
}
if (minfo.size == 0)
goto done;
/* treat frame as void until a buffer is requested for it */
if (!GST_VIDEO_CODEC_FRAME_FLAG_IS_SET (frame,
GST_FFMPEG_VIDEO_CODEC_FRAME_FLAG_ALLOCATED))
GST_VIDEO_CODEC_FRAME_FLAG_SET (frame,
GST_VIDEO_CODEC_FRAME_FLAG_DECODE_ONLY);
data = minfo.data;
size = minfo.size;
if (size > 0 && (!GST_MEMORY_IS_ZERO_PADDED (minfo.memory)
|| (minfo.maxsize - minfo.size) < AV_INPUT_BUFFER_PADDING_SIZE)) {
/* add padding */
if (ffmpegdec->padded_size < size + AV_INPUT_BUFFER_PADDING_SIZE) {
ffmpegdec->padded_size = size + AV_INPUT_BUFFER_PADDING_SIZE;
ffmpegdec->padded = g_realloc (ffmpegdec->padded, ffmpegdec->padded_size);
GST_LOG_OBJECT (ffmpegdec, "resized padding buffer to %d",
ffmpegdec->padded_size);
}
GST_CAT_TRACE_OBJECT (GST_CAT_PERFORMANCE, ffmpegdec,
"Copy input to add padding");
memcpy (ffmpegdec->padded, data, size);
memset (ffmpegdec->padded + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
data = ffmpegdec->padded;
}
/* Note: We use `av_packet_alloc()` so that it is properly initialized by
* FFmpeg and it can be properly cleaned-up (via `av_packet_unref()`) by
* FFmpeg also. */
packet = av_packet_alloc ();
packet->data = data;
packet->size = size;
/* Store a reference to the input frame. This will be carried along by FFmpeg
* to the resulting AVPicture */
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT (60, 31, 100)
{
packet->opaque_ref =
av_buffer_create (NULL, 0, gst_ffmpeg_opaque_free,
gst_video_codec_frame_ref (frame), 0);
GST_DEBUG_OBJECT (ffmpegdec,
"Store incoming frame # %u (%p) on AVPacket opaque",
frame->system_frame_number, frame);
}
#else
ffmpegdec->context->reordered_opaque = (gint64) frame->system_frame_number;
ffmpegdec->picture->reordered_opaque = (gint64) frame->system_frame_number;
GST_DEBUG_OBJECT (ffmpegdec, "stored opaque values idx %u",
frame->system_frame_number);
#endif
if (ffmpegdec->palette) {
guint8 *pal;
pal = av_packet_new_side_data (packet, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
gst_buffer_extract (ffmpegdec->palette, 0, pal, AVPALETTE_SIZE);
GST_DEBUG_OBJECT (ffmpegdec, "copy pal %p %p", &packet, pal);
}
/* This might call into get_buffer() from another thread,
* which would cause a deadlock. Release the lock here
* and taking it again later seems safe
* See https://bugzilla.gnome.org/show_bug.cgi?id=726020
*/
GST_VIDEO_DECODER_STREAM_UNLOCK (ffmpegdec);
if (avcodec_send_packet (ffmpegdec->context, packet) < 0) {
GST_VIDEO_DECODER_STREAM_LOCK (ffmpegdec);
av_packet_free (&packet);
goto send_packet_failed;
}
av_packet_free (&packet);
GST_VIDEO_DECODER_STREAM_LOCK (ffmpegdec);
do {
/* decode a frame of audio/video now */
got_frame = gst_ffmpegviddec_video_frame (ffmpegdec, frame, &ret);
if (ret != GST_FLOW_OK) {
GST_LOG_OBJECT (ffmpegdec, "breaking because of flow ret %s",
gst_flow_get_name (ret));
break;
}
} while (got_frame);
done:
gst_buffer_unmap (frame->input_buffer, &minfo);
gst_video_codec_frame_unref (frame);
return ret;
send_packet_failed:
{
GST_VIDEO_DECODER_ERROR (decoder, 1, STREAM, DECODE,
("Failed to send data for decoding"), ("Invalid input packet"), ret);
goto done;
}
}
static gboolean
gst_ffmpegviddec_start (GstVideoDecoder * decoder)
{
GstFFMpegVidDec *ffmpegdec = GST_FFMPEGVIDDEC (decoder);
GST_OBJECT_LOCK (ffmpegdec);
av_frame_free (&ffmpegdec->picture);
if (ffmpegdec->context)
av_freep (&ffmpegdec->context->extradata);
avcodec_free_context (&ffmpegdec->context);
ffmpegdec->picture = av_frame_alloc ();
GST_OBJECT_UNLOCK (ffmpegdec);
return TRUE;
}
static gboolean
gst_ffmpegviddec_stop (GstVideoDecoder * decoder)
{
GstFFMpegVidDec *ffmpegdec = GST_FFMPEGVIDDEC (decoder);
GST_OBJECT_LOCK (ffmpegdec);
av_frame_free (&ffmpegdec->picture);
gst_ffmpegviddec_close (ffmpegdec);
GST_OBJECT_UNLOCK (ffmpegdec);
g_free (ffmpegdec->padded);
ffmpegdec->padded = NULL;
ffmpegdec->padded_size = 0;
if (ffmpegdec->input_state)
gst_video_codec_state_unref (ffmpegdec->input_state);
ffmpegdec->input_state = NULL;
if (ffmpegdec->output_state)
gst_video_codec_state_unref (ffmpegdec->output_state);
ffmpegdec->output_state = NULL;
if (ffmpegdec->internal_pool)
gst_object_unref (ffmpegdec->internal_pool);
ffmpegdec->internal_pool = NULL;
ffmpegdec->pic_pix_fmt = 0;
ffmpegdec->pic_width = 0;
ffmpegdec->pic_height = 0;
ffmpegdec->pic_par_n = 0;
ffmpegdec->pic_par_d = 0;
ffmpegdec->pic_interlaced = 0;
ffmpegdec->pic_field_order = 0;
ffmpegdec->pic_field_order_changed = FALSE;
ffmpegdec->ctx_ticks = 0;
ffmpegdec->ctx_time_n = 0;
ffmpegdec->ctx_time_d = 0;
ffmpegdec->pool_width = 0;
ffmpegdec->pool_height = 0;
ffmpegdec->pool_format = 0;
return TRUE;
}
static GstFlowReturn
gst_ffmpegviddec_finish (GstVideoDecoder * decoder)
{
GstFlowReturn flow_ret;
flow_ret = gst_ffmpegviddec_drain (decoder);
/* note that finish can and should clean up more drastically,
* but drain is also invoked on e.g. packet loss in GAP handling */
gst_ffmpegviddec_flush (decoder);
return flow_ret;
}
static gboolean
gst_ffmpegviddec_flush (GstVideoDecoder * decoder)
{
GstFFMpegVidDec *ffmpegdec = GST_FFMPEGVIDDEC (decoder);
if (ffmpegdec->context) {
GST_LOG_OBJECT (decoder, "flushing buffers");
GST_VIDEO_DECODER_STREAM_UNLOCK (ffmpegdec);
avcodec_flush_buffers (ffmpegdec->context);
GST_VIDEO_DECODER_STREAM_LOCK (ffmpegdec);
}
return TRUE;
}
static gboolean
gst_ffmpegviddec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query)
{
GstFFMpegVidDec *ffmpegdec = GST_FFMPEGVIDDEC (decoder);
GstVideoCodecState *state;
GstBufferPool *pool;
guint size, min, max;
GstStructure *config;
gboolean have_pool, have_videometa, have_alignment, update_pool = FALSE;
GstAllocator *allocator = NULL;
GstAllocationParams params = DEFAULT_ALLOC_PARAM;
have_pool = (gst_query_get_n_allocation_pools (query) != 0);
if (!GST_VIDEO_DECODER_CLASS (parent_class)->decide_allocation (decoder,
query))
return FALSE;
state = gst_video_decoder_get_output_state (decoder);
if (gst_query_get_n_allocation_params (query) > 0) {
gst_query_parse_nth_allocation_param (query, 0, &allocator, &params);
params.align = MAX (params.align, DEFAULT_STRIDE_ALIGN);
} else {
gst_query_add_allocation_param (query, allocator, &params);
}
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
/* Don't use pool that can't grow, as we don't know how many buffer we'll
* need, otherwise we may stall */
if (max != 0 && max < REQUIRED_POOL_MAX_BUFFERS) {
gst_object_unref (pool);
pool = gst_video_buffer_pool_new ();
max = 0;
update_pool = TRUE;
have_pool = FALSE;
/* if there is an allocator, also drop it, as it might be the reason we
* have this limit. Default will be used */
if (allocator) {
gst_object_unref (allocator);
allocator = NULL;
}
}
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, state->caps, size, min, max);
gst_buffer_pool_config_set_allocator (config, allocator, &params);
have_videometa =
gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
if (have_videometa)
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
have_alignment =
gst_buffer_pool_has_option (pool, GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
/* If we have videometa, we never have to copy */
if (have_videometa && have_pool && have_alignment &&
gst_ffmpegviddec_can_direct_render (ffmpegdec)) {
GstStructure *config_copy = gst_structure_copy (config);
gst_ffmpegvideodec_prepare_dr_pool (ffmpegdec, pool, &state->info,
config_copy);
/* FIXME validate and retry */
if (gst_buffer_pool_set_config (pool, config_copy)) {
GstFlowReturn ret;
GstBuffer *tmp;
gst_buffer_pool_set_active (pool, TRUE);
ret = gst_buffer_pool_acquire_buffer (pool, &tmp, NULL);
if (ret == GST_FLOW_OK) {
GstVideoMeta *vmeta = gst_buffer_get_video_meta (tmp);
gboolean same_stride = TRUE;
guint i;
for (i = 0; i < vmeta->n_planes; i++) {
if (vmeta->stride[i] != ffmpegdec->stride[i]) {
same_stride = FALSE;
break;
}
}
gst_buffer_unref (tmp);
if (same_stride) {
if (ffmpegdec->internal_pool)
gst_object_unref (ffmpegdec->internal_pool);
ffmpegdec->internal_pool = gst_object_ref (pool);
ffmpegdec->pool_width = GST_VIDEO_INFO_WIDTH (&state->info);
ffmpegdec->pool_height =
MAX (GST_VIDEO_INFO_HEIGHT (&state->info),
ffmpegdec->context->coded_height);
ffmpegdec->pool_info = state->info;
gst_structure_free (config);
goto done;
}
}
}
}
if (have_videometa && ffmpegdec->internal_pool
&& gst_ffmpeg_pixfmt_to_videoformat (ffmpegdec->pool_format) ==
GST_VIDEO_INFO_FORMAT (&state->info)
&& ffmpegdec->pool_width == state->info.width
&& ffmpegdec->pool_height == state->info.height) {
update_pool = TRUE;
gst_object_unref (pool);
pool = gst_object_ref (ffmpegdec->internal_pool);
gst_structure_free (config);
goto done;
}
/* configure */
if (!gst_buffer_pool_set_config (pool, config)) {
gboolean working_pool = FALSE;
config = gst_buffer_pool_get_config (pool);
if (gst_buffer_pool_config_validate_params (config, state->caps, size, min,
max)) {
working_pool = gst_buffer_pool_set_config (pool, config);
} else {
gst_structure_free (config);
}
if (!working_pool) {
gst_object_unref (pool);
pool = gst_video_buffer_pool_new ();
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, state->caps, size, min, max);
gst_buffer_pool_config_set_allocator (config, NULL, &params);
gst_buffer_pool_set_config (pool, config);
update_pool = TRUE;
}
}
done:
/* and store */
if (update_pool)
gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
gst_object_unref (pool);
if (allocator)
gst_object_unref (allocator);
gst_video_codec_state_unref (state);
return TRUE;
}
static gboolean
gst_ffmpegviddec_propose_allocation (GstVideoDecoder * decoder,
GstQuery * query)
{
GstAllocationParams params;
gst_allocation_params_init (&params);
params.flags = GST_MEMORY_FLAG_ZERO_PADDED;
params.align = DEFAULT_STRIDE_ALIGN;
params.padding = AV_INPUT_BUFFER_PADDING_SIZE;
/* we would like to have some padding so that we don't have to
* memcpy. We don't suggest an allocator. */
gst_query_add_allocation_param (query, NULL, &params);
return GST_VIDEO_DECODER_CLASS (parent_class)->propose_allocation (decoder,
query);
}
static void
gst_ffmpegviddec_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstFFMpegVidDec *ffmpegdec = GST_FFMPEGVIDDEC (object);
switch (prop_id) {
case PROP_LOWRES:
ffmpegdec->lowres = g_value_get_enum (value);
break;
case PROP_SKIPFRAME:
ffmpegdec->skip_frame = g_value_get_enum (value);
break;
case PROP_DIRECT_RENDERING:
ffmpegdec->direct_rendering = g_value_get_boolean (value);
break;
#ifndef GST_REMOVE_DEPRECATED
case PROP_DEBUG_MV:
/* non-functional */
break;
#endif
case PROP_MAX_THREADS:
ffmpegdec->max_threads = g_value_get_int (value);
break;
case PROP_OUTPUT_CORRUPT:
ffmpegdec->output_corrupt = g_value_get_boolean (value);
break;
case PROP_THREAD_TYPE:
ffmpegdec->thread_type = g_value_get_flags (value);
break;
case PROP_STD_COMPLIANCE:
ffmpegdec->std_compliance = g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_ffmpegviddec_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstFFMpegVidDec *ffmpegdec = GST_FFMPEGVIDDEC (object);
switch (prop_id) {
case PROP_LOWRES:
g_value_set_enum (value, ffmpegdec->lowres);
break;
case PROP_SKIPFRAME:
g_value_set_enum (value, ffmpegdec->skip_frame);
break;
case PROP_DIRECT_RENDERING:
g_value_set_boolean (value, ffmpegdec->direct_rendering);
break;
#ifndef GST_REMOVE_DEPRECATED
case PROP_DEBUG_MV:
g_value_set_boolean (value, FALSE);
break;
#endif
case PROP_MAX_THREADS:
g_value_set_int (value, ffmpegdec->max_threads);
break;
case PROP_OUTPUT_CORRUPT:
g_value_set_boolean (value, ffmpegdec->output_corrupt);
break;
case PROP_THREAD_TYPE:
g_value_set_flags (value, ffmpegdec->thread_type);
break;
case PROP_STD_COMPLIANCE:
g_value_set_enum (value, ffmpegdec->std_compliance);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
gboolean
gst_ffmpegviddec_register (GstPlugin * plugin)
{
GTypeInfo typeinfo = {
sizeof (GstFFMpegVidDecClass),
NULL,
NULL,
(GClassInitFunc) gst_ffmpegviddec_subclass_init,
NULL,
NULL,
sizeof (GstFFMpegVidDec),
0,
(GInstanceInitFunc) gst_ffmpegviddec_subinit,
};
GType type;
AVCodec *in_plugin;
gint rank;
void *i = 0;
GST_LOG ("Registering decoders");
while ((in_plugin = (AVCodec *) av_codec_iterate (&i))) {
gchar *type_name;
gchar *plugin_name;
/* only video decoders */
if (!av_codec_is_decoder (in_plugin)
|| in_plugin->type != AVMEDIA_TYPE_VIDEO)
continue;
/* Skip formats we don't handle */
if (!gst_ffmpeg_codecid_is_known (in_plugin->id)) {
continue;
}
/* no quasi codecs, please */
if (in_plugin->id == AV_CODEC_ID_RAWVIDEO ||
in_plugin->id == AV_CODEC_ID_V210 ||
in_plugin->id == AV_CODEC_ID_V210X ||
in_plugin->id == AV_CODEC_ID_V308 ||
in_plugin->id == AV_CODEC_ID_V408 ||
in_plugin->id == AV_CODEC_ID_V410 || in_plugin->id == AV_CODEC_ID_R210
#if LIBAVCODEC_VERSION_MAJOR < 61
|| in_plugin->id == AV_CODEC_ID_AYUV
#endif
|| in_plugin->id == AV_CODEC_ID_Y41P
|| in_plugin->id == AV_CODEC_ID_012V
|| in_plugin->id == AV_CODEC_ID_YUV4
#if AV_VERSION_INT (LIBAVCODEC_VERSION_MAJOR, LIBAVCODEC_VERSION_MINOR, LIBAVCODEC_VERSION_MICRO) >= \
AV_VERSION_INT (57,4,0)
|| in_plugin->id == AV_CODEC_ID_WRAPPED_AVFRAME
#endif
|| in_plugin->id == AV_CODEC_ID_ZLIB) {
continue;
}
/* No decoders depending on external libraries (we don't build them, but
* people who build against an external ffmpeg might have them.
* We have native gstreamer plugins for all of those libraries anyway. */
if (!strncmp (in_plugin->name, "lib", 3)) {
GST_DEBUG
("Not using external library decoder %s. Use the gstreamer-native ones instead.",
in_plugin->name);
continue;
}
/* Skip hardware or hybrid (hardware with software fallback) */
if ((in_plugin->capabilities & AV_CODEC_CAP_HARDWARE) ==
AV_CODEC_CAP_HARDWARE) {
GST_DEBUG
("Ignoring hardware decoder %s. We can't handle this outside of ffmpeg",
in_plugin->name);
continue;
}
if ((in_plugin->capabilities & AV_CODEC_CAP_HYBRID) == AV_CODEC_CAP_HYBRID) {
GST_DEBUG
("Ignoring hybrid decoder %s. We can't handle this outside of ffmpeg",
in_plugin->name);
continue;
}
/* No vdpau plugins until we can figure out how to properly use them
* outside of ffmpeg. */
if (g_str_has_suffix (in_plugin->name, "_vdpau")) {
GST_DEBUG
("Ignoring VDPAU decoder %s. We can't handle this outside of ffmpeg",
in_plugin->name);
continue;
}
if (g_str_has_suffix (in_plugin->name, "_xvmc")) {
GST_DEBUG
("Ignoring XVMC decoder %s. We can't handle this outside of ffmpeg",
in_plugin->name);
continue;
}
if (strstr (in_plugin->name, "vaapi")) {
GST_DEBUG
("Ignoring VAAPI decoder %s. We can't handle this outside of ffmpeg",
in_plugin->name);
continue;
}
if (g_str_has_suffix (in_plugin->name, "_qsv")) {
GST_DEBUG
("Ignoring qsv decoder %s. We can't handle this outside of ffmpeg",
in_plugin->name);
continue;
}
GST_DEBUG ("Trying plugin %s [%s]", in_plugin->name, in_plugin->long_name);
/* no codecs for which we're GUARANTEED to have better alternatives */
/* MPEG1VIDEO : the mpeg2video decoder is preferred */
/* MP1 : Use MP3 for decoding */
/* MP2 : Use MP3 for decoding */
/* Theora: Use libtheora based theoradec */
/* CDG: use cdgdec */
/* AV1: Use av1dec, dav1ddec or any of the hardware decoders.
* Also ffmpeg's decoder only works with hardware support!
*/
if (!strcmp (in_plugin->name, "theora") ||
!strcmp (in_plugin->name, "mpeg1video") ||
strstr (in_plugin->name, "crystalhd") != NULL ||
!strcmp (in_plugin->name, "ass") ||
!strcmp (in_plugin->name, "srt") ||
!strcmp (in_plugin->name, "pgssub") ||
!strcmp (in_plugin->name, "dvdsub") ||
!strcmp (in_plugin->name, "dvbsub") ||
!strcmp (in_plugin->name, "cdgraphics") ||
!strcmp (in_plugin->name, "av1")) {
GST_LOG ("Ignoring decoder %s", in_plugin->name);
continue;
}
/* construct the type */
if (!strcmp (in_plugin->name, "hevc")) {
plugin_name = g_strdup ("h265");
} else {
plugin_name = g_strdup ((gchar *) in_plugin->name);
}
g_strdelimit (plugin_name, NULL, '_');
type_name = g_strdup_printf ("avdec_%s", plugin_name);
g_free (plugin_name);
type = g_type_from_name (type_name);
if (!type) {
/* create the gtype now */
typeinfo.class_data = in_plugin;
type =
g_type_register_static (GST_TYPE_FFMPEGVIDDEC, type_name, &typeinfo,
0);
}
/* (Ronald) MPEG-4 gets a higher priority because it has been well-
* tested and by far outperforms divxdec/xviddec - so we prefer it.
* msmpeg4v3 same, as it outperforms divxdec for divx3 playback. */
switch (in_plugin->id) {
case AV_CODEC_ID_MPEG1VIDEO:
case AV_CODEC_ID_MPEG2VIDEO:
case AV_CODEC_ID_MPEG4:
case AV_CODEC_ID_MSMPEG4V3:
case AV_CODEC_ID_H264:
case AV_CODEC_ID_HEVC:
case AV_CODEC_ID_RV10:
case AV_CODEC_ID_RV20:
case AV_CODEC_ID_RV30:
case AV_CODEC_ID_RV40:
rank = GST_RANK_PRIMARY;
break;
/* DVVIDEO: we have a good dv decoder, fast on both ppc as well as x86.
* They say libdv's quality is better though. leave as secondary.
* note: if you change this, see the code in gstdv.c in good/ext/dv.
*/
case AV_CODEC_ID_DVVIDEO:
rank = GST_RANK_SECONDARY;
break;
default:
rank = GST_RANK_MARGINAL;
break;
}
if (!gst_element_register (plugin, type_name, rank, type)) {
g_warning ("Failed to register %s", type_name);
g_free (type_name);
return FALSE;
}
g_free (type_name);
}
GST_LOG ("Finished Registering decoders");
return TRUE;
}
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