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FFmpeg/libavfilter/buffersrc.c
Niklas Haas ca77fc2177 avfilter: fix YUV colorspace negotiation for YUVJ 
Ironically, despite being introduced to make YUVJ unnecessary, the new
YUV negotiation logic failed to actually negotiate YUVJ formats
themselves correctly, leading to errors when passing YUVJ frames into
a filter graph. (They were effectively treated like RGB or Grayscale
formats, rather than as forced-full-range YUV, and hence did not have
their colorspace matrix correctly negotiated)

Fix this by splitting off the YUVJ check from ff_fmt_is_regular_yuv().
Obviously, we can trivially undo this change again once YUVJ is actually
deleted from the codebase.

Fixes: #11179
2024-09-12 19:13:21 +02:00

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/*
* Copyright (c) 2008 Vitor Sessak
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* memory buffer source filter
*/
#include <float.h>
#include "libavutil/channel_layout.h"
#include "libavutil/frame.h"
#include "libavutil/hwcontext.h"
#include "libavutil/internal.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/samplefmt.h"
#include "libavutil/timestamp.h"
#include "avfilter.h"
#include "avfilter_internal.h"
#include "buffersrc.h"
#include "filters.h"
#include "formats.h"
#include "video.h"
typedef struct BufferSourceContext {
const AVClass *class;
AVRational time_base; ///< time_base to set in the output link
AVRational frame_rate; ///< frame_rate to set in the output link
unsigned nb_failed_requests;
/* video only */
int w, h, prev_w, prev_h;
enum AVPixelFormat pix_fmt, prev_pix_fmt;
enum AVColorSpace color_space, prev_color_space;
enum AVColorRange color_range, prev_color_range;
AVRational pixel_aspect;
AVBufferRef *hw_frames_ctx;
/* audio only */
int sample_rate;
enum AVSampleFormat sample_fmt;
int channels;
char *channel_layout_str;
AVChannelLayout ch_layout;
int eof;
int64_t last_pts;
int link_delta, prev_delta;
} BufferSourceContext;
#define CHECK_VIDEO_PARAM_CHANGE(s, c, width, height, format, csp, range, pts)\
c->link_delta = c->w != width || c->h != height || c->pix_fmt != format ||\
c->color_space != csp || c->color_range != range;\
c->prev_delta = c->prev_w != width || c->prev_h != height || c->prev_pix_fmt != format ||\
c->prev_color_space != csp || c->prev_color_range != range;\
if (c->link_delta) {\
int loglevel = c->prev_delta ? AV_LOG_WARNING : AV_LOG_DEBUG;\
av_log(s, loglevel, "Changing video frame properties on the fly is not supported by all filters.\n");\
av_log(s, loglevel, "filter context - w: %d h: %d fmt: %d csp: %s range: %s, incoming frame - w: %d h: %d fmt: %d csp: %s range: %s pts_time: %s\n",\
c->w, c->h, c->pix_fmt, av_color_space_name(c->color_space), av_color_range_name(c->color_range),\
width, height, format, av_color_space_name(csp), av_color_range_name(range),\
av_ts2timestr(pts, &s->outputs[0]->time_base));\
}\
if (c->prev_delta) {\
if (!c->link_delta)\
av_log(s, AV_LOG_VERBOSE, "video frame properties congruent with link at pts_time: %s\n", av_ts2timestr(pts, &s->outputs[0]->time_base));\
c->prev_w = width;\
c->prev_h = height;\
c->prev_pix_fmt = format;\
c->prev_color_space = csp;\
c->prev_color_range = range;\
}
#define CHECK_AUDIO_PARAM_CHANGE(s, c, srate, layout, format, pts)\
if (c->sample_fmt != format || c->sample_rate != srate ||\
av_channel_layout_compare(&c->ch_layout, &layout) || c->channels != layout.nb_channels) {\
av_log(s, AV_LOG_INFO, "filter context - fmt: %s r: %d layout: %"PRIX64" ch: %d, incoming frame - fmt: %s r: %d layout: %"PRIX64" ch: %d pts_time: %s\n",\
av_get_sample_fmt_name(c->sample_fmt), c->sample_rate, c->ch_layout.order == AV_CHANNEL_ORDER_NATIVE ? c->ch_layout.u.mask : 0, c->channels,\
av_get_sample_fmt_name(format), srate, layout.order == AV_CHANNEL_ORDER_NATIVE ? layout.u.mask : 0, layout.nb_channels, av_ts2timestr(pts, &s->outputs[0]->time_base));\
av_log(s, AV_LOG_ERROR, "Changing audio frame properties on the fly is not supported.\n");\
return AVERROR(EINVAL);\
}
AVBufferSrcParameters *av_buffersrc_parameters_alloc(void)
{
AVBufferSrcParameters *par = av_mallocz(sizeof(*par));
if (!par)
return NULL;
par->format = -1;
par->color_range = AVCOL_RANGE_UNSPECIFIED;
par->color_space = AVCOL_SPC_UNSPECIFIED;
return par;
}
int av_buffersrc_parameters_set(AVFilterContext *ctx, AVBufferSrcParameters *param)
{
BufferSourceContext *s = ctx->priv;
if (param->time_base.num > 0 && param->time_base.den > 0)
s->time_base = param->time_base;
switch (ctx->filter->outputs[0].type) {
case AVMEDIA_TYPE_VIDEO:
if (param->format != AV_PIX_FMT_NONE) {
s->pix_fmt = s->prev_pix_fmt = param->format;
}
if (param->width > 0)
s->w = s->prev_w = param->width;
if (param->height > 0)
s->h = s->prev_h = param->height;
if (param->sample_aspect_ratio.num > 0 && param->sample_aspect_ratio.den > 0)
s->pixel_aspect = param->sample_aspect_ratio;
if (param->frame_rate.num > 0 && param->frame_rate.den > 0)
s->frame_rate = param->frame_rate;
if (param->hw_frames_ctx) {
av_buffer_unref(&s->hw_frames_ctx);
s->hw_frames_ctx = av_buffer_ref(param->hw_frames_ctx);
if (!s->hw_frames_ctx)
return AVERROR(ENOMEM);
}
if (param->color_space != AVCOL_SPC_UNSPECIFIED)
s->color_space = s->prev_color_space = param->color_space;
if (param->color_range != AVCOL_RANGE_UNSPECIFIED)
s->color_range = s->prev_color_range = param->color_range;
break;
case AVMEDIA_TYPE_AUDIO:
if (param->format != AV_SAMPLE_FMT_NONE) {
s->sample_fmt = param->format;
}
if (param->sample_rate > 0)
s->sample_rate = param->sample_rate;
if (param->ch_layout.nb_channels) {
int ret = av_channel_layout_copy(&s->ch_layout, &param->ch_layout);
if (ret < 0)
return ret;
}
break;
default:
return AVERROR_BUG;
}
return 0;
}
int attribute_align_arg av_buffersrc_write_frame(AVFilterContext *ctx, const AVFrame *frame)
{
return av_buffersrc_add_frame_flags(ctx, (AVFrame *)frame,
AV_BUFFERSRC_FLAG_KEEP_REF);
}
int attribute_align_arg av_buffersrc_add_frame(AVFilterContext *ctx, AVFrame *frame)
{
return av_buffersrc_add_frame_flags(ctx, frame, 0);
}
static int push_frame(AVFilterGraph *graph)
{
int ret;
while (1) {
ret = ff_filter_graph_run_once(graph);
if (ret == AVERROR(EAGAIN))
break;
if (ret < 0)
return ret;
}
return 0;
}
int attribute_align_arg av_buffersrc_add_frame_flags(AVFilterContext *ctx, AVFrame *frame, int flags)
{
BufferSourceContext *s = ctx->priv;
AVFrame *copy;
int refcounted, ret;
s->nb_failed_requests = 0;
if (!frame)
return av_buffersrc_close(ctx, s->last_pts, flags);
if (s->eof)
return AVERROR_EOF;
s->last_pts = frame->pts + frame->duration;
refcounted = !!frame->buf[0];
if (!(flags & AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT)) {
switch (ctx->outputs[0]->type) {
case AVMEDIA_TYPE_VIDEO:
CHECK_VIDEO_PARAM_CHANGE(ctx, s, frame->width, frame->height,
frame->format, frame->colorspace,
frame->color_range, frame->pts);
break;
case AVMEDIA_TYPE_AUDIO:
/* For layouts unknown on input but known on link after negotiation. */
if (frame->ch_layout.order == AV_CHANNEL_ORDER_UNSPEC && frame->ch_layout.nb_channels == s->ch_layout.nb_channels) {
ret = av_channel_layout_copy(&frame->ch_layout, &s->ch_layout);
if (ret < 0)
return ret;
}
CHECK_AUDIO_PARAM_CHANGE(ctx, s, frame->sample_rate, frame->ch_layout,
frame->format, frame->pts);
break;
default:
return AVERROR(EINVAL);
}
}
if (refcounted && !(flags & AV_BUFFERSRC_FLAG_KEEP_REF)) {
if (!(copy = av_frame_alloc()))
return AVERROR(ENOMEM);
av_frame_move_ref(copy, frame);
} else {
copy = av_frame_clone(frame);
if (!copy)
return AVERROR(ENOMEM);
}
#if FF_API_INTERLACED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
if (copy->interlaced_frame)
copy->flags |= AV_FRAME_FLAG_INTERLACED;
if (copy->top_field_first)
copy->flags |= AV_FRAME_FLAG_TOP_FIELD_FIRST;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
#if FF_API_FRAME_KEY
FF_DISABLE_DEPRECATION_WARNINGS
if (copy->key_frame)
copy->flags |= AV_FRAME_FLAG_KEY;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
if (copy->colorspace == AVCOL_SPC_UNSPECIFIED)
copy->colorspace = ctx->outputs[0]->colorspace;
if (copy->color_range == AVCOL_RANGE_UNSPECIFIED)
copy->color_range = ctx->outputs[0]->color_range;
ret = ff_filter_frame(ctx->outputs[0], copy);
if (ret < 0)
return ret;
if ((flags & AV_BUFFERSRC_FLAG_PUSH)) {
ret = push_frame(ctx->graph);
if (ret < 0)
return ret;
}
return 0;
}
int av_buffersrc_close(AVFilterContext *ctx, int64_t pts, unsigned flags)
{
BufferSourceContext *s = ctx->priv;
s->eof = 1;
ff_avfilter_link_set_in_status(ctx->outputs[0], AVERROR_EOF, pts);
return (flags & AV_BUFFERSRC_FLAG_PUSH) ? push_frame(ctx->graph) : 0;
}
static av_cold int init_video(AVFilterContext *ctx)
{
BufferSourceContext *c = ctx->priv;
if (c->pix_fmt == AV_PIX_FMT_NONE) {
av_log(ctx, AV_LOG_ERROR, "Unspecified pixel format\n");
return AVERROR(EINVAL);
}
if (c->w <= 0 || c->h <= 0) {
av_log(ctx, AV_LOG_ERROR, "Invalid size %dx%d\n", c->w, c->h);
return AVERROR(EINVAL);
}
if (av_q2d(c->time_base) <= 0) {
av_log(ctx, AV_LOG_ERROR, "Invalid time base %d/%d\n", c->time_base.num, c->time_base.den);
return AVERROR(EINVAL);
}
av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d pixfmt:%s tb:%d/%d fr:%d/%d sar:%d/%d csp:%s range:%s\n",
c->w, c->h, av_get_pix_fmt_name(c->pix_fmt),
c->time_base.num, c->time_base.den, c->frame_rate.num, c->frame_rate.den,
c->pixel_aspect.num, c->pixel_aspect.den,
av_color_space_name(c->color_space), av_color_range_name(c->color_range));
return 0;
}
unsigned av_buffersrc_get_nb_failed_requests(AVFilterContext *buffer_src)
{
return ((BufferSourceContext *)buffer_src->priv)->nb_failed_requests;
}
#define OFFSET(x) offsetof(BufferSourceContext, x)
#define A AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_AUDIO_PARAM
#define V AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
static const AVOption buffer_options[] = {
{ "width", NULL, OFFSET(w), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, V },
{ "video_size", NULL, OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, .flags = V },
{ "height", NULL, OFFSET(h), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, V },
{ "pix_fmt", NULL, OFFSET(pix_fmt), AV_OPT_TYPE_PIXEL_FMT, { .i64 = AV_PIX_FMT_NONE }, .min = AV_PIX_FMT_NONE, .max = INT_MAX, .flags = V },
{ "sar", "sample aspect ratio", OFFSET(pixel_aspect), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, V },
{ "pixel_aspect", "sample aspect ratio", OFFSET(pixel_aspect), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, V },
{ "time_base", NULL, OFFSET(time_base), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, V },
{ "frame_rate", NULL, OFFSET(frame_rate), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, V },
{ "colorspace", "select colorspace", OFFSET(color_space), AV_OPT_TYPE_INT, {.i64=AVCOL_SPC_UNSPECIFIED}, 0, AVCOL_SPC_NB-1, V, .unit = "colorspace"},
{ "gbr", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_RGB}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
{ "bt709", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_BT709}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
{ "unknown", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_UNSPECIFIED}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
{ "fcc", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_FCC}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
{ "bt470bg", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_BT470BG}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
{ "smpte170m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_SMPTE170M}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
{ "smpte240m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_SMPTE240M}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
{ "ycgco", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_YCGCO}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
{ "ycgco-re", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_YCGCO_RE}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
{ "ycgco-ro", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_YCGCO_RO}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
{ "bt2020nc", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_BT2020_NCL}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
{ "bt2020c", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_BT2020_CL}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
{ "smpte2085", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_SMPTE2085}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
{ "chroma-derived-nc", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_CHROMA_DERIVED_NCL},INT_MIN, INT_MAX, V, .unit = "colorspace"},
{ "chroma-derived-c", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_CHROMA_DERIVED_CL}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
{ "ictcp", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_ICTCP}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
{ "ipt-c2", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_IPT_C2}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
{ "range", "select color range", OFFSET(color_range), AV_OPT_TYPE_INT, {.i64=AVCOL_RANGE_UNSPECIFIED}, 0, AVCOL_RANGE_NB-1, V, .unit = "range"},
{ "unspecified", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_UNSPECIFIED}, 0, 0, V, .unit = "range"},
{ "unknown", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_UNSPECIFIED}, 0, 0, V, .unit = "range"},
{ "limited", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_MPEG}, 0, 0, V, .unit = "range"},
{ "tv", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_MPEG}, 0, 0, V, .unit = "range"},
{ "mpeg", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_MPEG}, 0, 0, V, .unit = "range"},
{ "full", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_JPEG}, 0, 0, V, .unit = "range"},
{ "pc", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_JPEG}, 0, 0, V, .unit = "range"},
{ "jpeg", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_JPEG}, 0, 0, V, .unit = "range"},
{ NULL },
};
AVFILTER_DEFINE_CLASS(buffer);
static const AVOption abuffer_options[] = {
{ "time_base", NULL, OFFSET(time_base), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, INT_MAX, A },
{ "sample_rate", NULL, OFFSET(sample_rate), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, A },
{ "sample_fmt", NULL, OFFSET(sample_fmt), AV_OPT_TYPE_SAMPLE_FMT, { .i64 = AV_SAMPLE_FMT_NONE }, .min = AV_SAMPLE_FMT_NONE, .max = INT_MAX, .flags = A },
{ "channel_layout", NULL, OFFSET(channel_layout_str), AV_OPT_TYPE_STRING, .flags = A },
{ "channels", NULL, OFFSET(channels), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, A },
{ NULL },
};
AVFILTER_DEFINE_CLASS(abuffer);
static av_cold int init_audio(AVFilterContext *ctx)
{
BufferSourceContext *s = ctx->priv;
char buf[128];
int ret = 0;
if (s->sample_fmt == AV_SAMPLE_FMT_NONE) {
av_log(ctx, AV_LOG_ERROR, "Sample format was not set or was invalid\n");
return AVERROR(EINVAL);
}
if (s->channel_layout_str || s->ch_layout.nb_channels) {
int n;
if (!s->ch_layout.nb_channels) {
ret = av_channel_layout_from_string(&s->ch_layout, s->channel_layout_str);
if (ret < 0) {
av_log(ctx, AV_LOG_ERROR, "Invalid channel layout %s.\n",
s->channel_layout_str);
return AVERROR(EINVAL);
}
}
n = s->ch_layout.nb_channels;
av_channel_layout_describe(&s->ch_layout, buf, sizeof(buf));
if (s->channels) {
if (n != s->channels) {
av_log(ctx, AV_LOG_ERROR,
"Mismatching channel count %d and layout '%s' "
"(%d channels)\n",
s->channels, buf, n);
return AVERROR(EINVAL);
}
}
s->channels = n;
} else if (!s->channels) {
av_log(ctx, AV_LOG_ERROR, "Neither number of channels nor "
"channel layout specified\n");
return AVERROR(EINVAL);
} else {
s->ch_layout = FF_COUNT2LAYOUT(s->channels);
av_channel_layout_describe(&s->ch_layout, buf, sizeof(buf));
}
if (!s->time_base.num)
s->time_base = (AVRational){1, s->sample_rate};
av_log(ctx, AV_LOG_VERBOSE,
"tb:%d/%d samplefmt:%s samplerate:%d chlayout:%s\n",
s->time_base.num, s->time_base.den, av_get_sample_fmt_name(s->sample_fmt),
s->sample_rate, buf);
return ret;
}
static av_cold void uninit(AVFilterContext *ctx)
{
BufferSourceContext *s = ctx->priv;
av_buffer_unref(&s->hw_frames_ctx);
av_channel_layout_uninit(&s->ch_layout);
}
static int query_formats(AVFilterContext *ctx)
{
BufferSourceContext *c = ctx->priv;
AVFilterChannelLayouts *channel_layouts = NULL;
AVFilterFormats *formats = NULL;
AVFilterFormats *samplerates = NULL;
AVFilterFormats *color_spaces = NULL;
AVFilterFormats *color_ranges = NULL;
int ret;
switch (ctx->outputs[0]->type) {
case AVMEDIA_TYPE_VIDEO: {
enum AVPixelFormat swfmt = c->pix_fmt;
if (av_pix_fmt_desc_get(swfmt)->flags & AV_PIX_FMT_FLAG_HWACCEL) {
if (!c->hw_frames_ctx) {
av_log(ctx, AV_LOG_ERROR, "Setting BufferSourceContext.pix_fmt "
"to a HW format requires hw_frames_ctx to be non-NULL!\n");
return AVERROR(EINVAL);
}
swfmt = ((AVHWFramesContext *) c->hw_frames_ctx->data)->sw_format;
}
if ((ret = ff_add_format (&formats, c->pix_fmt)) < 0 ||
(ret = ff_set_common_formats (ctx , formats )) < 0)
return ret;
/* force specific colorspace/range downstream only for ordinary YUV */
if (ff_fmt_is_regular_yuv(swfmt)) {
if ((ret = ff_add_format(&color_spaces, c->color_space)) < 0 ||
(ret = ff_set_common_color_spaces(ctx, color_spaces)) < 0)
return ret;
if (ff_fmt_is_forced_full_range(swfmt)) {
if ((ret = ff_add_format(&color_ranges, AVCOL_RANGE_JPEG)) < 0)
return ret;
} else {
if ((ret = ff_add_format(&color_ranges, c->color_range)) < 0)
return ret;
if (c->color_range == AVCOL_RANGE_UNSPECIFIED) {
/* allow implicitly promoting unspecified to mpeg */
if ((ret = ff_add_format(&color_ranges, AVCOL_RANGE_MPEG)) < 0)
return ret;
}
}
if ((ret = ff_set_common_color_ranges(ctx, color_ranges)) < 0)
return ret;
}
break;
}
case AVMEDIA_TYPE_AUDIO:
if ((ret = ff_add_format (&formats , c->sample_fmt )) < 0 ||
(ret = ff_set_common_formats (ctx , formats )) < 0 ||
(ret = ff_add_format (&samplerates, c->sample_rate)) < 0 ||
(ret = ff_set_common_samplerates (ctx , samplerates )) < 0)
return ret;
if ((ret = ff_add_channel_layout(&channel_layouts, &c->ch_layout)) < 0)
return ret;
if ((ret = ff_set_common_channel_layouts(ctx, channel_layouts)) < 0)
return ret;
break;
default:
return AVERROR(EINVAL);
}
return 0;
}
static int config_props(AVFilterLink *link)
{
FilterLink *l = ff_filter_link(link);
BufferSourceContext *c = link->src->priv;
switch (link->type) {
case AVMEDIA_TYPE_VIDEO:
link->w = c->w;
link->h = c->h;
link->sample_aspect_ratio = c->pixel_aspect;
if (c->hw_frames_ctx) {
l->hw_frames_ctx = av_buffer_ref(c->hw_frames_ctx);
if (!l->hw_frames_ctx)
return AVERROR(ENOMEM);
}
break;
case AVMEDIA_TYPE_AUDIO:
if (!c->ch_layout.nb_channels || c->ch_layout.order == AV_CHANNEL_ORDER_UNSPEC) {
int ret = av_channel_layout_copy(&c->ch_layout, &link->ch_layout);
if (ret < 0)
return ret;
}
break;
default:
return AVERROR(EINVAL);
}
link->time_base = c->time_base;
l->frame_rate = c->frame_rate;
return 0;
}
static int activate(AVFilterContext *ctx)
{
AVFilterLink *outlink = ctx->outputs[0];
BufferSourceContext *c = ctx->priv;
if (!c->eof && ff_outlink_get_status(outlink)) {
c->eof = 1;
return 0;
}
if (c->eof) {
ff_outlink_set_status(outlink, AVERROR_EOF, c->last_pts);
return 0;
}
c->nb_failed_requests++;
return FFERROR_NOT_READY;
}
static const AVFilterPad avfilter_vsrc_buffer_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_props,
},
};
const AVFilter ff_vsrc_buffer = {
.name = "buffer",
.description = NULL_IF_CONFIG_SMALL("Buffer video frames, and make them accessible to the filterchain."),
.priv_size = sizeof(BufferSourceContext),
.activate = activate,
.init = init_video,
.uninit = uninit,
.inputs = NULL,
FILTER_OUTPUTS(avfilter_vsrc_buffer_outputs),
FILTER_QUERY_FUNC(query_formats),
.priv_class = &buffer_class,
};
static const AVFilterPad avfilter_asrc_abuffer_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.config_props = config_props,
},
};
const AVFilter ff_asrc_abuffer = {
.name = "abuffer",
.description = NULL_IF_CONFIG_SMALL("Buffer audio frames, and make them accessible to the filterchain."),
.priv_size = sizeof(BufferSourceContext),
.activate = activate,
.init = init_audio,
.uninit = uninit,
.inputs = NULL,
FILTER_OUTPUTS(avfilter_asrc_abuffer_outputs),
FILTER_QUERY_FUNC(query_formats),
.priv_class = &abuffer_class,
};
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