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Diffstat (limited to 'ffmpeg1/libavfilter/buffersink.c')
-rw-r--r--ffmpeg1/libavfilter/buffersink.c558
1 files changed, 0 insertions, 558 deletions
diff --git a/ffmpeg1/libavfilter/buffersink.c b/ffmpeg1/libavfilter/buffersink.c
deleted file mode 100644
index bcb6525..0000000
--- a/ffmpeg1/libavfilter/buffersink.c
+++ /dev/null
@@ -1,558 +0,0 @@
-/*
- * Copyright (c) 2011 Stefano Sabatini
- *
- * 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
- * buffer sink
- */
-
-#include "libavutil/audio_fifo.h"
-#include "libavutil/avassert.h"
-#include "libavutil/channel_layout.h"
-#include "libavutil/common.h"
-#include "libavutil/mathematics.h"
-
-#include "audio.h"
-#include "avfilter.h"
-#include "buffersink.h"
-#include "internal.h"
-
-typedef struct {
- AVFifoBuffer *fifo; ///< FIFO buffer of video frame references
- unsigned warning_limit;
-
- /* only used for video */
- enum AVPixelFormat *pixel_fmts; ///< list of accepted pixel formats, must be terminated with -1
-
- /* only used for audio */
- enum AVSampleFormat *sample_fmts; ///< list of accepted sample formats, terminated by AV_SAMPLE_FMT_NONE
- int64_t *channel_layouts; ///< list of accepted channel layouts, terminated by -1
- int all_channel_counts;
- int *sample_rates; ///< list of accepted sample rates, terminated by -1
-
- /* only used for compat API */
- AVAudioFifo *audio_fifo; ///< FIFO for audio samples
- int64_t next_pts; ///< interpolating audio pts
-} BufferSinkContext;
-
-static av_cold void uninit(AVFilterContext *ctx)
-{
- BufferSinkContext *sink = ctx->priv;
- AVFrame *frame;
-
- if (sink->audio_fifo)
- av_audio_fifo_free(sink->audio_fifo);
-
- if (sink->fifo) {
- while (av_fifo_size(sink->fifo) >= sizeof(AVFilterBufferRef *)) {
- av_fifo_generic_read(sink->fifo, &frame, sizeof(frame), NULL);
- av_frame_unref(frame);
- }
- av_fifo_free(sink->fifo);
- sink->fifo = NULL;
- }
- av_freep(&sink->pixel_fmts);
- av_freep(&sink->sample_fmts);
- av_freep(&sink->sample_rates);
- av_freep(&sink->channel_layouts);
-}
-
-static int add_buffer_ref(AVFilterContext *ctx, AVFrame *ref)
-{
- BufferSinkContext *buf = ctx->priv;
-
- if (av_fifo_space(buf->fifo) < sizeof(AVFilterBufferRef *)) {
- /* realloc fifo size */
- if (av_fifo_realloc2(buf->fifo, av_fifo_size(buf->fifo) * 2) < 0) {
- av_log(ctx, AV_LOG_ERROR,
- "Cannot buffer more frames. Consume some available frames "
- "before adding new ones.\n");
- return AVERROR(ENOMEM);
- }
- }
-
- /* cache frame */
- av_fifo_generic_write(buf->fifo, &ref, sizeof(AVFilterBufferRef *), NULL);
- return 0;
-}
-
-static int filter_frame(AVFilterLink *link, AVFrame *frame)
-{
- AVFilterContext *ctx = link->dst;
- BufferSinkContext *buf = link->dst->priv;
- int ret;
-
- if ((ret = add_buffer_ref(ctx, frame)) < 0)
- return ret;
- if (buf->warning_limit &&
- av_fifo_size(buf->fifo) / sizeof(AVFilterBufferRef *) >= buf->warning_limit) {
- av_log(ctx, AV_LOG_WARNING,
- "%d buffers queued in %s, something may be wrong.\n",
- buf->warning_limit,
- (char *)av_x_if_null(ctx->name, ctx->filter->name));
- buf->warning_limit *= 10;
- }
- return 0;
-}
-
-int av_buffersink_get_frame(AVFilterContext *ctx, AVFrame *frame)
-{
- return av_buffersink_get_frame_flags(ctx, frame, 0);
-}
-
-int attribute_align_arg av_buffersink_get_frame_flags(AVFilterContext *ctx, AVFrame *frame, int flags)
-{
- BufferSinkContext *buf = ctx->priv;
- AVFilterLink *inlink = ctx->inputs[0];
- int ret;
- AVFrame *cur_frame;
-
- /* no picref available, fetch it from the filterchain */
- if (!av_fifo_size(buf->fifo)) {
- if (flags & AV_BUFFERSINK_FLAG_NO_REQUEST)
- return AVERROR(EAGAIN);
- if ((ret = ff_request_frame(inlink)) < 0)
- return ret;
- }
-
- if (!av_fifo_size(buf->fifo))
- return AVERROR(EINVAL);
-
- if (flags & AV_BUFFERSINK_FLAG_PEEK) {
- cur_frame = *((AVFrame **)av_fifo_peek2(buf->fifo, 0));
- if ((ret = av_frame_ref(frame, cur_frame)) < 0)
- return ret;
- } else {
- av_fifo_generic_read(buf->fifo, &cur_frame, sizeof(cur_frame), NULL);
- av_frame_move_ref(frame, cur_frame);
- av_frame_free(&cur_frame);
- }
-
- return 0;
-}
-
-static int read_from_fifo(AVFilterContext *ctx, AVFrame *frame,
- int nb_samples)
-{
- BufferSinkContext *s = ctx->priv;
- AVFilterLink *link = ctx->inputs[0];
- AVFrame *tmp;
-
- if (!(tmp = ff_get_audio_buffer(link, nb_samples)))
- return AVERROR(ENOMEM);
- av_audio_fifo_read(s->audio_fifo, (void**)tmp->extended_data, nb_samples);
-
- tmp->pts = s->next_pts;
- s->next_pts += av_rescale_q(nb_samples, (AVRational){1, link->sample_rate},
- link->time_base);
-
- av_frame_move_ref(frame, tmp);
- av_frame_free(&tmp);
-
- return 0;
-
-}
-
-int attribute_align_arg av_buffersink_get_samples(AVFilterContext *ctx, AVFrame *frame, int nb_samples)
-{
- BufferSinkContext *s = ctx->priv;
- AVFilterLink *link = ctx->inputs[0];
- AVFrame *cur_frame;
- int ret = 0;
-
- if (!s->audio_fifo) {
- int nb_channels = link->channels;
- if (!(s->audio_fifo = av_audio_fifo_alloc(link->format, nb_channels, nb_samples)))
- return AVERROR(ENOMEM);
- }
-
- while (ret >= 0) {
- if (av_audio_fifo_size(s->audio_fifo) >= nb_samples)
- return read_from_fifo(ctx, frame, nb_samples);
-
- if (!(cur_frame = av_frame_alloc()))
- return AVERROR(ENOMEM);
- ret = av_buffersink_get_frame_flags(ctx, cur_frame, 0);
- if (ret == AVERROR_EOF && av_audio_fifo_size(s->audio_fifo)) {
- av_frame_free(&cur_frame);
- return read_from_fifo(ctx, frame, av_audio_fifo_size(s->audio_fifo));
- } else if (ret < 0) {
- av_frame_free(&cur_frame);
- return ret;
- }
-
- if (cur_frame->pts != AV_NOPTS_VALUE) {
- s->next_pts = cur_frame->pts -
- av_rescale_q(av_audio_fifo_size(s->audio_fifo),
- (AVRational){ 1, link->sample_rate },
- link->time_base);
- }
-
- ret = av_audio_fifo_write(s->audio_fifo, (void**)cur_frame->extended_data,
- cur_frame->nb_samples);
- av_frame_free(&cur_frame);
- }
-
- return ret;
-
-}
-
-AVBufferSinkParams *av_buffersink_params_alloc(void)
-{
- static const int pixel_fmts[] = { AV_PIX_FMT_NONE };
- AVBufferSinkParams *params = av_malloc(sizeof(AVBufferSinkParams));
- if (!params)
- return NULL;
-
- params->pixel_fmts = pixel_fmts;
- return params;
-}
-
-AVABufferSinkParams *av_abuffersink_params_alloc(void)
-{
- AVABufferSinkParams *params = av_mallocz(sizeof(AVABufferSinkParams));
-
- if (!params)
- return NULL;
- return params;
-}
-
-#define FIFO_INIT_SIZE 8
-
-static av_cold int common_init(AVFilterContext *ctx)
-{
- BufferSinkContext *buf = ctx->priv;
-
- buf->fifo = av_fifo_alloc(FIFO_INIT_SIZE*sizeof(AVFilterBufferRef *));
- if (!buf->fifo) {
- av_log(ctx, AV_LOG_ERROR, "Failed to allocate fifo\n");
- return AVERROR(ENOMEM);
- }
- buf->warning_limit = 100;
- return 0;
-}
-
-void av_buffersink_set_frame_size(AVFilterContext *ctx, unsigned frame_size)
-{
- AVFilterLink *inlink = ctx->inputs[0];
-
- inlink->min_samples = inlink->max_samples =
- inlink->partial_buf_size = frame_size;
-}
-
-#if FF_API_AVFILTERBUFFER
-static void compat_free_buffer(AVFilterBuffer *buf)
-{
- AVFrame *frame = buf->priv;
- av_frame_free(&frame);
- av_free(buf);
-}
-
-static int attribute_align_arg compat_read(AVFilterContext *ctx, AVFilterBufferRef **pbuf, int nb_samples, int flags)
-{
- AVFilterBufferRef *buf;
- AVFrame *frame;
- int ret;
-
- if (!pbuf)
- return ff_poll_frame(ctx->inputs[0]);
-
- frame = av_frame_alloc();
- if (!frame)
- return AVERROR(ENOMEM);
-
- if (!nb_samples)
- ret = av_buffersink_get_frame_flags(ctx, frame, flags);
- else
- ret = av_buffersink_get_samples(ctx, frame, nb_samples);
-
- if (ret < 0)
- goto fail;
-
- if (ctx->inputs[0]->type == AVMEDIA_TYPE_VIDEO) {
- buf = avfilter_get_video_buffer_ref_from_arrays(frame->data, frame->linesize,
- AV_PERM_READ,
- frame->width, frame->height,
- frame->format);
- } else {
- buf = avfilter_get_audio_buffer_ref_from_arrays(frame->extended_data,
- frame->linesize[0], AV_PERM_READ,
- frame->nb_samples,
- frame->format,
- frame->channel_layout);
- }
- if (!buf) {
- ret = AVERROR(ENOMEM);
- goto fail;
- }
-
- avfilter_copy_frame_props(buf, frame);
-
- buf->buf->priv = frame;
- buf->buf->free = compat_free_buffer;
-
- *pbuf = buf;
-
- return 0;
-fail:
- av_frame_free(&frame);
- return ret;
-}
-
-int av_buffersink_read(AVFilterContext *ctx, AVFilterBufferRef **buf)
-{
- return compat_read(ctx, buf, 0, 0);
-}
-
-int av_buffersink_read_samples(AVFilterContext *ctx, AVFilterBufferRef **buf,
- int nb_samples)
-{
- return compat_read(ctx, buf, nb_samples, 0);
-}
-
-int av_buffersink_get_buffer_ref(AVFilterContext *ctx,
- AVFilterBufferRef **bufref, int flags)
-{
- *bufref = NULL;
-
- av_assert0( !strcmp(ctx->filter->name, "buffersink")
- || !strcmp(ctx->filter->name, "abuffersink")
- || !strcmp(ctx->filter->name, "ffbuffersink")
- || !strcmp(ctx->filter->name, "ffabuffersink"));
-
- return compat_read(ctx, bufref, 0, flags);
-}
-#endif
-
-AVRational av_buffersink_get_frame_rate(AVFilterContext *ctx)
-{
- av_assert0( !strcmp(ctx->filter->name, "buffersink")
- || !strcmp(ctx->filter->name, "ffbuffersink"));
-
- return ctx->inputs[0]->frame_rate;
-}
-
-int attribute_align_arg av_buffersink_poll_frame(AVFilterContext *ctx)
-{
- BufferSinkContext *buf = ctx->priv;
- AVFilterLink *inlink = ctx->inputs[0];
-
- av_assert0( !strcmp(ctx->filter->name, "buffersink")
- || !strcmp(ctx->filter->name, "abuffersink")
- || !strcmp(ctx->filter->name, "ffbuffersink")
- || !strcmp(ctx->filter->name, "ffabuffersink"));
-
- return av_fifo_size(buf->fifo)/sizeof(AVFilterBufferRef *) + ff_poll_frame(inlink);
-}
-
-static av_cold int vsink_init(AVFilterContext *ctx, const char *args, void *opaque)
-{
- BufferSinkContext *buf = ctx->priv;
- AVBufferSinkParams *params = opaque;
-
- if (params && params->pixel_fmts) {
- const int *pixel_fmts = params->pixel_fmts;
-
- buf->pixel_fmts = ff_copy_int_list(pixel_fmts);
- if (!buf->pixel_fmts)
- return AVERROR(ENOMEM);
- }
-
- return common_init(ctx);
-}
-
-static int vsink_query_formats(AVFilterContext *ctx)
-{
- BufferSinkContext *buf = ctx->priv;
-
- if (buf->pixel_fmts)
- ff_set_common_formats(ctx, ff_make_format_list(buf->pixel_fmts));
- else
- ff_default_query_formats(ctx);
-
- return 0;
-}
-
-static int64_t *concat_channels_lists(const int64_t *layouts, const int *counts)
-{
- int nb_layouts = 0, nb_counts = 0, i;
- int64_t *list;
-
- if (layouts)
- for (; layouts[nb_layouts] != -1; nb_layouts++);
- if (counts)
- for (; counts[nb_counts] != -1; nb_counts++);
- if (nb_counts > INT_MAX - 1 - nb_layouts)
- return NULL;
- if (!(list = av_calloc(nb_layouts + nb_counts + 1, sizeof(*list))))
- return NULL;
- for (i = 0; i < nb_layouts; i++)
- list[i] = layouts[i];
- for (i = 0; i < nb_counts; i++)
- list[nb_layouts + i] = FF_COUNT2LAYOUT(counts[i]);
- list[nb_layouts + nb_counts] = -1;
- return list;
-}
-
-static av_cold int asink_init(AVFilterContext *ctx, const char *args, void *opaque)
-{
- BufferSinkContext *buf = ctx->priv;
- AVABufferSinkParams *params = opaque;
-
- if (params && params->sample_fmts) {
- buf->sample_fmts = ff_copy_int_list(params->sample_fmts);
- if (!buf->sample_fmts)
- return AVERROR(ENOMEM);
- }
- if (params && params->sample_rates) {
- buf->sample_rates = ff_copy_int_list(params->sample_rates);
- if (!buf->sample_rates)
- return AVERROR(ENOMEM);
- }
- if (params && (params->channel_layouts || params->channel_counts)) {
- if (params->all_channel_counts) {
- av_log(ctx, AV_LOG_ERROR,
- "Conflicting all_channel_counts and list in parameters\n");
- return AVERROR(EINVAL);
- }
- buf->channel_layouts = concat_channels_lists(params->channel_layouts,
- params->channel_counts);
- if (!buf->channel_layouts)
- return AVERROR(ENOMEM);
- }
- if (params)
- buf->all_channel_counts = params->all_channel_counts;
- return common_init(ctx);
-}
-
-static int asink_query_formats(AVFilterContext *ctx)
-{
- BufferSinkContext *buf = ctx->priv;
- AVFilterFormats *formats = NULL;
- AVFilterChannelLayouts *layouts = NULL;
-
- if (buf->sample_fmts) {
- if (!(formats = ff_make_format_list(buf->sample_fmts)))
- return AVERROR(ENOMEM);
- ff_set_common_formats(ctx, formats);
- }
-
- if (buf->channel_layouts || buf->all_channel_counts) {
- layouts = buf->all_channel_counts ? ff_all_channel_counts() :
- avfilter_make_format64_list(buf->channel_layouts);
- if (!layouts)
- return AVERROR(ENOMEM);
- ff_set_common_channel_layouts(ctx, layouts);
- }
-
- if (buf->sample_rates) {
- formats = ff_make_format_list(buf->sample_rates);
- if (!formats)
- return AVERROR(ENOMEM);
- ff_set_common_samplerates(ctx, formats);
- }
-
- return 0;
-}
-
-#if FF_API_AVFILTERBUFFER
-static const AVFilterPad ffbuffersink_inputs[] = {
- {
- .name = "default",
- .type = AVMEDIA_TYPE_VIDEO,
- .filter_frame = filter_frame,
- },
- { NULL },
-};
-
-AVFilter avfilter_vsink_ffbuffersink = {
- .name = "ffbuffersink",
- .description = NULL_IF_CONFIG_SMALL("Buffer video frames, and make them available to the end of the filter graph."),
- .priv_size = sizeof(BufferSinkContext),
- .init_opaque = vsink_init,
- .uninit = uninit,
-
- .query_formats = vsink_query_formats,
- .inputs = ffbuffersink_inputs,
- .outputs = NULL,
-};
-
-static const AVFilterPad ffabuffersink_inputs[] = {
- {
- .name = "default",
- .type = AVMEDIA_TYPE_AUDIO,
- .filter_frame = filter_frame,
- },
- { NULL },
-};
-
-AVFilter avfilter_asink_ffabuffersink = {
- .name = "ffabuffersink",
- .description = NULL_IF_CONFIG_SMALL("Buffer audio frames, and make them available to the end of the filter graph."),
- .init_opaque = asink_init,
- .uninit = uninit,
- .priv_size = sizeof(BufferSinkContext),
- .query_formats = asink_query_formats,
- .inputs = ffabuffersink_inputs,
- .outputs = NULL,
-};
-#endif /* FF_API_AVFILTERBUFFER */
-
-static const AVFilterPad avfilter_vsink_buffer_inputs[] = {
- {
- .name = "default",
- .type = AVMEDIA_TYPE_VIDEO,
- .filter_frame = filter_frame,
- },
- { NULL }
-};
-
-AVFilter avfilter_vsink_buffer = {
- .name = "buffersink",
- .description = NULL_IF_CONFIG_SMALL("Buffer video frames, and make them available to the end of the filter graph."),
- .priv_size = sizeof(BufferSinkContext),
- .init_opaque = vsink_init,
- .uninit = uninit,
-
- .query_formats = vsink_query_formats,
- .inputs = avfilter_vsink_buffer_inputs,
- .outputs = NULL,
-};
-
-static const AVFilterPad avfilter_asink_abuffer_inputs[] = {
- {
- .name = "default",
- .type = AVMEDIA_TYPE_AUDIO,
- .filter_frame = filter_frame,
- },
- { NULL }
-};
-
-AVFilter avfilter_asink_abuffer = {
- .name = "abuffersink",
- .description = NULL_IF_CONFIG_SMALL("Buffer audio frames, and make them available to the end of the filter graph."),
- .priv_size = sizeof(BufferSinkContext),
- .init_opaque = asink_init,
- .uninit = uninit,
-
- .query_formats = asink_query_formats,
- .inputs = avfilter_asink_abuffer_inputs,
- .outputs = NULL,
-};
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-06 14:21:25 +0000