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gstreamer/subprojects/gst-libav/ext/libav/gstavviddec.c

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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) -> (%i, %i)",
ffmpegdec->pool_width, ffmpegdec->pool_height, 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;
if (vmeta->width != GST_VIDEO_INFO_WIDTH (info) ||
vmeta->height != GST_VIDEO_INFO_HEIGHT (info)) {
g_error ("video meta uses %dx%d instead of %dx%d",
vmeta->width, vmeta->height, GST_VIDEO_INFO_WIDTH (info),
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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