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Diffstat (limited to 'libavfilter/buffersrc.c')
-rw-r--r--libavfilter/buffersrc.c244
1 files changed, 158 insertions, 86 deletions
diff --git a/libavfilter/buffersrc.c b/libavfilter/buffersrc.c
index df00971514..cd56f8ca45 100644
--- a/libavfilter/buffersrc.c
+++ b/libavfilter/buffersrc.c
@@ -1,20 +1,20 @@
/*
* Copyright (c) 2008 Vitor Sessak
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@@ -45,19 +45,21 @@ typedef struct BufferSourceContext {
AVFifoBuffer *fifo;
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;
+ unsigned warning_limit;
/* video only */
- int h, w;
+ int w, h;
enum AVPixelFormat pix_fmt;
- char *pix_fmt_str;
AVRational pixel_aspect;
+ char *sws_param;
AVBufferRef *hw_frames_ctx;
/* audio only */
int sample_rate;
enum AVSampleFormat sample_fmt;
- char *sample_fmt_str;
+ int channels;
uint64_t channel_layout;
char *channel_layout_str;
@@ -67,13 +69,12 @@ typedef struct BufferSourceContext {
#define CHECK_VIDEO_PARAM_CHANGE(s, c, width, height, format)\
if (c->w != width || c->h != height || c->pix_fmt != format) {\
- av_log(s, AV_LOG_ERROR, "Changing frame properties on the fly is not supported.\n");\
- return AVERROR(EINVAL);\
+ av_log(s, AV_LOG_INFO, "Changing frame properties on the fly is not supported by all filters.\n");\
}
-#define CHECK_AUDIO_PARAM_CHANGE(s, c, srate, ch_layout, format)\
+#define CHECK_AUDIO_PARAM_CHANGE(s, c, srate, ch_layout, ch_count, format)\
if (c->sample_fmt != format || c->sample_rate != srate ||\
- c->channel_layout != ch_layout) {\
+ c->channel_layout != ch_layout || c->channels != ch_count) {\
av_log(s, AV_LOG_ERROR, "Changing frame properties on the fly is not supported.\n");\
return AVERROR(EINVAL);\
}
@@ -136,47 +137,92 @@ int av_buffersrc_parameters_set(AVFilterContext *ctx, AVBufferSrcParameters *par
int attribute_align_arg av_buffersrc_write_frame(AVFilterContext *ctx, const AVFrame *frame)
{
- AVFrame *copy;
+ 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 av_buffersrc_add_frame_internal(AVFilterContext *ctx,
+ AVFrame *frame, int flags);
+
+int attribute_align_arg av_buffersrc_add_frame_flags(AVFilterContext *ctx, AVFrame *frame, int flags)
+{
+ AVFrame *copy = NULL;
int ret = 0;
+ if (frame && frame->channel_layout &&
+ av_get_channel_layout_nb_channels(frame->channel_layout) != frame->channels) {
+ av_log(ctx, AV_LOG_ERROR, "Layout indicates a different number of channels than actually present\n");
+ return AVERROR(EINVAL);
+ }
+
+ if (!(flags & AV_BUFFERSRC_FLAG_KEEP_REF) || !frame)
+ return av_buffersrc_add_frame_internal(ctx, frame, flags);
+
if (!(copy = av_frame_alloc()))
return AVERROR(ENOMEM);
ret = av_frame_ref(copy, frame);
if (ret >= 0)
- ret = av_buffersrc_add_frame(ctx, copy);
+ ret = av_buffersrc_add_frame_internal(ctx, copy, flags);
av_frame_free(&copy);
return ret;
}
-int attribute_align_arg av_buffersrc_add_frame(AVFilterContext *ctx,
- AVFrame *frame)
+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;
+}
+
+static int av_buffersrc_add_frame_internal(AVFilterContext *ctx,
+ AVFrame *frame, int flags)
{
BufferSourceContext *s = ctx->priv;
AVFrame *copy;
int refcounted, ret;
- if (!frame) {
- s->eof = 1;
- return 0;
- } else if (s->eof)
+ s->nb_failed_requests = 0;
+
+ if (!frame)
+ return av_buffersrc_close(ctx, AV_NOPTS_VALUE, flags);
+ if (s->eof)
return AVERROR(EINVAL);
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);
break;
case AVMEDIA_TYPE_AUDIO:
+ /* For layouts unknown on input but known on link after negotiation. */
+ if (!frame->channel_layout)
+ frame->channel_layout = s->channel_layout;
CHECK_AUDIO_PARAM_CHANGE(ctx, s, frame->sample_rate, frame->channel_layout,
- frame->format);
+ frame->channels, frame->format);
break;
default:
return AVERROR(EINVAL);
}
+ }
+
if (!av_fifo_space(s->fifo) &&
(ret = av_fifo_realloc2(s->fifo, av_fifo_size(s->fifo) +
sizeof(copy))) < 0)
@@ -202,100 +248,118 @@ int attribute_align_arg av_buffersrc_add_frame(AVFilterContext *ctx,
return ret;
}
+ if ((ret = ctx->output_pads[0].request_frame(ctx->outputs[0])) < 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_str || c->got_format_from_params) || !c->w || !c->h ||
+ if (!(c->pix_fmt != AV_PIX_FMT_NONE || c->got_format_from_params) || !c->w || !c->h ||
av_q2d(c->time_base) <= 0) {
av_log(ctx, AV_LOG_ERROR, "Invalid parameters provided.\n");
return AVERROR(EINVAL);
}
- if (c->pix_fmt_str) {
- if ((c->pix_fmt = av_get_pix_fmt(c->pix_fmt_str)) == AV_PIX_FMT_NONE) {
- char *tail;
- c->pix_fmt = strtol(c->pix_fmt_str, &tail, 10);
- if (*tail || c->pix_fmt < 0 || !av_pix_fmt_desc_get(c->pix_fmt)) {
- av_log(ctx, AV_LOG_ERROR, "Invalid pixel format string '%s'\n", c->pix_fmt_str);
- return AVERROR(EINVAL);
- }
- }
- }
-
if (!(c->fifo = av_fifo_alloc(sizeof(AVFrame*))))
return AVERROR(ENOMEM);
- av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d pixfmt:%s tb:%d/%d sar:%d/%d\n",
+ av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d pixfmt:%s tb:%d/%d fr:%d/%d sar:%d/%d sws_param:%s\n",
c->w, c->h, av_get_pix_fmt_name(c->pix_fmt),
- c->time_base.num, c->time_base.den,
- c->pixel_aspect.num, c->pixel_aspect.den);
+ c->time_base.num, c->time_base.den, c->frame_rate.num, c->frame_rate.den,
+ c->pixel_aspect.num, c->pixel_aspect.den, (char *)av_x_if_null(c->sws_param, ""));
+ c->warning_limit = 100;
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_AUDIO_PARAM
-#define V AV_OPT_FLAG_VIDEO_PARAM
+#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 video_options[] = {
+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_str), AV_OPT_TYPE_STRING, .flags = 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 },
+ { "sws_param", NULL, OFFSET(sws_param), AV_OPT_TYPE_STRING, .flags = V },
{ NULL },
};
-static const AVClass buffer_class = {
- .class_name = "buffer source",
- .item_name = av_default_item_name,
- .option = video_options,
- .version = LIBAVUTIL_VERSION_INT,
-};
+AVFILTER_DEFINE_CLASS(buffer);
-static const AVOption audio_options[] = {
+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_str), AV_OPT_TYPE_STRING, .flags = 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 },
};
-static const AVClass abuffer_class = {
- .class_name = "abuffer source",
- .item_name = av_default_item_name,
- .option = audio_options,
- .version = LIBAVUTIL_VERSION_INT,
-};
+AVFILTER_DEFINE_CLASS(abuffer);
static av_cold int init_audio(AVFilterContext *ctx)
{
BufferSourceContext *s = ctx->priv;
int ret = 0;
- if (!(s->sample_fmt_str || s->got_format_from_params)) {
- av_log(ctx, AV_LOG_ERROR, "Sample format not provided\n");
+ if (!(s->sample_fmt != AV_SAMPLE_FMT_NONE || s->got_format_from_params)) {
+ av_log(ctx, AV_LOG_ERROR, "Sample format was not set or was invalid\n");
return AVERROR(EINVAL);
}
- if (s->sample_fmt_str)
- s->sample_fmt = av_get_sample_fmt(s->sample_fmt_str);
- if (s->sample_fmt == AV_SAMPLE_FMT_NONE) {
- av_log(ctx, AV_LOG_ERROR, "Invalid sample format %s.\n",
- s->sample_fmt_str);
- return AVERROR(EINVAL);
- }
+ if (s->channel_layout_str || s->channel_layout) {
+ int n;
- if (s->channel_layout_str)
- s->channel_layout = av_get_channel_layout(s->channel_layout_str);
-
- if (!s->channel_layout) {
- av_log(ctx, AV_LOG_ERROR, "Invalid channel layout %s.\n",
- s->channel_layout_str);
+ if (!s->channel_layout) {
+ s->channel_layout = av_get_channel_layout(s->channel_layout_str);
+ if (!s->channel_layout) {
+ av_log(ctx, AV_LOG_ERROR, "Invalid channel layout %s.\n",
+ s->channel_layout_str);
+ return AVERROR(EINVAL);
+ }
+ }
+ n = av_get_channel_layout_nb_channels(s->channel_layout);
+ 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, s->channel_layout_str, 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);
}
@@ -305,9 +369,11 @@ static av_cold int init_audio(AVFilterContext *ctx)
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 "
- "ch layout:%s\n", s->time_base.num, s->time_base.den, s->sample_fmt_str,
+ 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, s->channel_layout_str);
+ s->warning_limit = 100;
return ret;
}
@@ -321,8 +387,7 @@ static av_cold void uninit(AVFilterContext *ctx)
av_frame_free(&frame);
}
av_buffer_unref(&s->hw_frames_ctx);
- av_fifo_free(s->fifo);
- s->fifo = NULL;
+ av_fifo_freep(&s->fifo);
}
static int query_formats(AVFilterContext *ctx)
@@ -331,21 +396,27 @@ static int query_formats(AVFilterContext *ctx)
AVFilterChannelLayouts *channel_layouts = NULL;
AVFilterFormats *formats = NULL;
AVFilterFormats *samplerates = NULL;
+ int ret;
switch (ctx->outputs[0]->type) {
case AVMEDIA_TYPE_VIDEO:
- ff_add_format(&formats, c->pix_fmt);
- ff_set_common_formats(ctx, formats);
+ if ((ret = ff_add_format (&formats, c->pix_fmt)) < 0 ||
+ (ret = ff_set_common_formats (ctx , formats )) < 0)
+ return ret;
break;
case AVMEDIA_TYPE_AUDIO:
- ff_add_format(&formats, c->sample_fmt);
- ff_set_common_formats(ctx, formats);
-
- ff_add_format(&samplerates, c->sample_rate);
- ff_set_common_samplerates(ctx, samplerates);
+ 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;
- ff_add_channel_layout(&channel_layouts, c->channel_layout);
- ff_set_common_channel_layouts(ctx, channel_layouts);
+ if ((ret = ff_add_channel_layout(&channel_layouts,
+ c->channel_layout ? c->channel_layout :
+ FF_COUNT2LAYOUT(c->channels))) < 0)
+ return ret;
+ if ((ret = ff_set_common_channel_layouts(ctx, channel_layouts)) < 0)
+ return ret;
break;
default:
return AVERROR(EINVAL);
@@ -371,8 +442,8 @@ static int config_props(AVFilterLink *link)
}
break;
case AVMEDIA_TYPE_AUDIO:
- link->channel_layout = c->channel_layout;
- link->sample_rate = c->sample_rate;
+ if (!c->channel_layout)
+ c->channel_layout = link->channel_layout;
break;
default:
return AVERROR(EINVAL);
@@ -387,11 +458,12 @@ static int request_frame(AVFilterLink *link)
{
BufferSourceContext *c = link->src->priv;
AVFrame *frame;
- int ret = 0;
+ int ret;
if (!av_fifo_size(c->fifo)) {
if (c->eof)
return AVERROR_EOF;
+ c->nb_failed_requests++;
return AVERROR(EAGAIN);
}
av_fifo_generic_read(c->fifo, &frame, sizeof(frame), NULL);
@@ -425,7 +497,6 @@ 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),
- .priv_class = &buffer_class,
.query_formats = query_formats,
.init = init_video,
@@ -433,6 +504,7 @@ AVFilter ff_vsrc_buffer = {
.inputs = NULL,
.outputs = avfilter_vsrc_buffer_outputs,
+ .priv_class = &buffer_class,
};
static const AVFilterPad avfilter_asrc_abuffer_outputs[] = {
@@ -450,7 +522,6 @@ 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),
- .priv_class = &abuffer_class,
.query_formats = query_formats,
.init = init_audio,
@@ -458,4 +529,5 @@ AVFilter ff_asrc_abuffer = {
.inputs = NULL,
.outputs = avfilter_asrc_abuffer_outputs,
+ .priv_class = &abuffer_class,
};
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-30 13:21:05 +0000