mirror of
https://github.com/FFmpeg/FFmpeg.git
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414 lines
14 KiB
C
414 lines
14 KiB
C
/*
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* Copyright (c) 2011 Stefano Sabatini
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* buffer sink
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*/
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#include "libavutil/avassert.h"
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#include "libavutil/avstring.h"
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#include "libavutil/channel_layout.h"
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#include "libavutil/common.h"
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#include "libavutil/internal.h"
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#include "libavutil/opt.h"
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#define FF_INTERNAL_FIELDS 1
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#include "framequeue.h"
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#include "audio.h"
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#include "avfilter.h"
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#include "buffersink.h"
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#include "filters.h"
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#include "formats.h"
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#include "internal.h"
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#include "video.h"
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typedef struct BufferSinkContext {
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const AVClass *class;
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unsigned warning_limit;
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/* only used for video */
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enum AVPixelFormat *pixel_fmts; ///< list of accepted pixel formats
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int pixel_fmts_size;
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/* only used for audio */
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enum AVSampleFormat *sample_fmts; ///< list of accepted sample formats
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int sample_fmts_size;
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#if FF_API_OLD_CHANNEL_LAYOUT
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int64_t *channel_layouts; ///< list of accepted channel layouts
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int channel_layouts_size;
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int *channel_counts; ///< list of accepted channel counts
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int channel_counts_size;
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#endif
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char *channel_layouts_str; ///< list of accepted channel layouts
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int all_channel_counts;
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int *sample_rates; ///< list of accepted sample rates
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int sample_rates_size;
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AVFrame *peeked_frame;
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} BufferSinkContext;
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#define NB_ITEMS(list) (list ## _size / sizeof(*list))
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#if FF_API_OLD_CHANNEL_LAYOUT
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static void cleanup_redundant_layouts(AVFilterContext *ctx)
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{
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BufferSinkContext *buf = ctx->priv;
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int nb_layouts = NB_ITEMS(buf->channel_layouts);
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int nb_counts = NB_ITEMS(buf->channel_counts);
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uint64_t counts = 0;
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int i, lc, n;
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for (i = 0; i < nb_counts; i++)
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if (buf->channel_counts[i] < 64)
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counts |= (uint64_t)1 << buf->channel_counts[i];
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for (i = lc = 0; i < nb_layouts; i++) {
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n = av_popcount64(buf->channel_layouts[i]);
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if (n < 64 && (counts & ((uint64_t)1 << n)))
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av_log(ctx, AV_LOG_WARNING,
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"Removing channel layout 0x%"PRIx64", redundant with %d channels\n",
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buf->channel_layouts[i], n);
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else
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buf->channel_layouts[lc++] = buf->channel_layouts[i];
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}
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buf->channel_layouts_size = lc * sizeof(*buf->channel_layouts);
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}
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#endif
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int attribute_align_arg av_buffersink_get_frame(AVFilterContext *ctx, AVFrame *frame)
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{
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return av_buffersink_get_frame_flags(ctx, frame, 0);
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}
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static int return_or_keep_frame(BufferSinkContext *buf, AVFrame *out, AVFrame *in, int flags)
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{
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if ((flags & AV_BUFFERSINK_FLAG_PEEK)) {
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buf->peeked_frame = in;
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return out ? av_frame_ref(out, in) : 0;
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} else {
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av_assert1(out);
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buf->peeked_frame = NULL;
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av_frame_move_ref(out, in);
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av_frame_free(&in);
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return 0;
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}
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}
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static int get_frame_internal(AVFilterContext *ctx, AVFrame *frame, int flags, int samples)
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{
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BufferSinkContext *buf = ctx->priv;
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AVFilterLink *inlink = ctx->inputs[0];
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int status, ret;
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AVFrame *cur_frame;
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int64_t pts;
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if (buf->peeked_frame)
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return return_or_keep_frame(buf, frame, buf->peeked_frame, flags);
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while (1) {
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ret = samples ? ff_inlink_consume_samples(inlink, samples, samples, &cur_frame) :
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ff_inlink_consume_frame(inlink, &cur_frame);
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if (ret < 0) {
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return ret;
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} else if (ret) {
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/* TODO return the frame instead of copying it */
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return return_or_keep_frame(buf, frame, cur_frame, flags);
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} else if (ff_inlink_acknowledge_status(inlink, &status, &pts)) {
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return status;
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} else if ((flags & AV_BUFFERSINK_FLAG_NO_REQUEST)) {
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return AVERROR(EAGAIN);
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} else if (inlink->frame_wanted_out) {
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ret = ff_filter_graph_run_once(ctx->graph);
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if (ret < 0)
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return ret;
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} else {
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ff_inlink_request_frame(inlink);
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}
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}
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}
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int attribute_align_arg av_buffersink_get_frame_flags(AVFilterContext *ctx, AVFrame *frame, int flags)
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{
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return get_frame_internal(ctx, frame, flags, ctx->inputs[0]->min_samples);
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}
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int attribute_align_arg av_buffersink_get_samples(AVFilterContext *ctx,
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AVFrame *frame, int nb_samples)
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{
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return get_frame_internal(ctx, frame, 0, nb_samples);
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}
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static av_cold int common_init(AVFilterContext *ctx)
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{
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BufferSinkContext *buf = ctx->priv;
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buf->warning_limit = 100;
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return 0;
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}
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static void uninit(AVFilterContext *ctx)
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{
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BufferSinkContext *buf = ctx->priv;
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av_frame_free(&buf->peeked_frame);
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}
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static int activate(AVFilterContext *ctx)
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{
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BufferSinkContext *buf = ctx->priv;
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if (buf->warning_limit &&
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ff_framequeue_queued_frames(&ctx->inputs[0]->fifo) >= buf->warning_limit) {
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av_log(ctx, AV_LOG_WARNING,
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"%d buffers queued in %s, something may be wrong.\n",
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buf->warning_limit,
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(char *)av_x_if_null(ctx->name, ctx->filter->name));
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buf->warning_limit *= 10;
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}
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/* The frame is queued, the rest is up to get_frame_internal */
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return 0;
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}
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void av_buffersink_set_frame_size(AVFilterContext *ctx, unsigned frame_size)
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{
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AVFilterLink *inlink = ctx->inputs[0];
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inlink->min_samples = inlink->max_samples = frame_size;
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}
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#define MAKE_AVFILTERLINK_ACCESSOR(type, field) \
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type av_buffersink_get_##field(const AVFilterContext *ctx) { \
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av_assert0(ctx->filter->activate == activate); \
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return ctx->inputs[0]->field; \
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}
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MAKE_AVFILTERLINK_ACCESSOR(enum AVMediaType , type )
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MAKE_AVFILTERLINK_ACCESSOR(AVRational , time_base )
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MAKE_AVFILTERLINK_ACCESSOR(int , format )
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MAKE_AVFILTERLINK_ACCESSOR(AVRational , frame_rate )
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MAKE_AVFILTERLINK_ACCESSOR(int , w )
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MAKE_AVFILTERLINK_ACCESSOR(int , h )
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MAKE_AVFILTERLINK_ACCESSOR(AVRational , sample_aspect_ratio)
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#if FF_API_OLD_CHANNEL_LAYOUT
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FF_DISABLE_DEPRECATION_WARNINGS
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MAKE_AVFILTERLINK_ACCESSOR(uint64_t , channel_layout )
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FF_ENABLE_DEPRECATION_WARNINGS
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#endif
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MAKE_AVFILTERLINK_ACCESSOR(int , sample_rate )
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MAKE_AVFILTERLINK_ACCESSOR(AVBufferRef * , hw_frames_ctx )
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int av_buffersink_get_channels(const AVFilterContext *ctx)
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{
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av_assert0(ctx->filter->activate == activate);
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return ctx->inputs[0]->ch_layout.nb_channels;
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}
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int av_buffersink_get_ch_layout(const AVFilterContext *ctx, AVChannelLayout *out)
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{
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AVChannelLayout ch_layout = { 0 };
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int ret;
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av_assert0(ctx->filter->activate == activate);
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ret = av_channel_layout_copy(&ch_layout, &ctx->inputs[0]->ch_layout);
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if (ret < 0)
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return ret;
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*out = ch_layout;
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return 0;
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}
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#define CHECK_LIST_SIZE(field) \
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if (buf->field ## _size % sizeof(*buf->field)) { \
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av_log(ctx, AV_LOG_ERROR, "Invalid size for " #field ": %d, " \
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"should be multiple of %d\n", \
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buf->field ## _size, (int)sizeof(*buf->field)); \
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return AVERROR(EINVAL); \
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}
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static int vsink_query_formats(AVFilterContext *ctx)
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{
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BufferSinkContext *buf = ctx->priv;
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AVFilterFormats *formats = NULL;
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unsigned i;
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int ret;
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CHECK_LIST_SIZE(pixel_fmts)
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if (buf->pixel_fmts_size) {
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for (i = 0; i < NB_ITEMS(buf->pixel_fmts); i++)
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if ((ret = ff_add_format(&formats, buf->pixel_fmts[i])) < 0)
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return ret;
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if ((ret = ff_set_common_formats(ctx, formats)) < 0)
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return ret;
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} else {
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if ((ret = ff_default_query_formats(ctx)) < 0)
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return ret;
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}
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return 0;
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}
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static int asink_query_formats(AVFilterContext *ctx)
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{
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BufferSinkContext *buf = ctx->priv;
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AVFilterFormats *formats = NULL;
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AVChannelLayout layout = { 0 };
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AVFilterChannelLayouts *layouts = NULL;
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unsigned i;
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int ret;
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CHECK_LIST_SIZE(sample_fmts)
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CHECK_LIST_SIZE(sample_rates)
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#if FF_API_OLD_CHANNEL_LAYOUT
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CHECK_LIST_SIZE(channel_layouts)
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CHECK_LIST_SIZE(channel_counts)
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#endif
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if (buf->sample_fmts_size) {
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for (i = 0; i < NB_ITEMS(buf->sample_fmts); i++)
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if ((ret = ff_add_format(&formats, buf->sample_fmts[i])) < 0)
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return ret;
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if ((ret = ff_set_common_formats(ctx, formats)) < 0)
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return ret;
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}
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if (
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#if FF_API_OLD_CHANNEL_LAYOUT
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buf->channel_layouts_size || buf->channel_counts_size ||
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#endif
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buf->channel_layouts_str || buf->all_channel_counts) {
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#if FF_API_OLD_CHANNEL_LAYOUT
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cleanup_redundant_layouts(ctx);
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for (i = 0; i < NB_ITEMS(buf->channel_layouts); i++)
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if ((ret = av_channel_layout_from_mask(&layout, buf->channel_layouts[i])) < 0 ||
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(ret = ff_add_channel_layout(&layouts, &layout)) < 0)
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return ret;
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for (i = 0; i < NB_ITEMS(buf->channel_counts); i++) {
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layout = FF_COUNT2LAYOUT(buf->channel_counts[i]);
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if ((ret = ff_add_channel_layout(&layouts, &layout)) < 0)
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return ret;
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}
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#endif
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if (buf->channel_layouts_str) {
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const char *cur = buf->channel_layouts_str;
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#if FF_API_OLD_CHANNEL_LAYOUT
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if (layouts)
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av_log(ctx, AV_LOG_WARNING,
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"Conflicting ch_layouts and list of channel_counts/channel_layouts. Ignoring the former\n");
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else
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#endif
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while (cur) {
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char *next = strchr(cur, '|');
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if (next)
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*next++ = 0;
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ret = av_channel_layout_from_string(&layout, cur);
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if (ret < 0) {
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av_log(ctx, AV_LOG_ERROR, "Error parsing channel layout: %s.\n", cur);
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return ret;
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}
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ret = ff_add_channel_layout(&layouts, &layout);
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av_channel_layout_uninit(&layout);
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if (ret < 0)
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return ret;
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cur = next;
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}
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}
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if (buf->all_channel_counts) {
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if (layouts)
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av_log(ctx, AV_LOG_WARNING,
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"Conflicting all_channel_counts and list in options\n");
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else if (!(layouts = ff_all_channel_counts()))
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return AVERROR(ENOMEM);
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}
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if ((ret = ff_set_common_channel_layouts(ctx, layouts)) < 0)
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return ret;
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}
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if (buf->sample_rates_size) {
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formats = NULL;
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for (i = 0; i < NB_ITEMS(buf->sample_rates); i++)
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if ((ret = ff_add_format(&formats, buf->sample_rates[i])) < 0)
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return ret;
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if ((ret = ff_set_common_samplerates(ctx, formats)) < 0)
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return ret;
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}
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return 0;
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}
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#define OFFSET(x) offsetof(BufferSinkContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption buffersink_options[] = {
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{ "pix_fmts", "set the supported pixel formats", OFFSET(pixel_fmts), AV_OPT_TYPE_BINARY, .flags = FLAGS },
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{ NULL },
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};
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#undef FLAGS
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_AUDIO_PARAM
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static const AVOption abuffersink_options[] = {
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{ "sample_fmts", "set the supported sample formats", OFFSET(sample_fmts), AV_OPT_TYPE_BINARY, .flags = FLAGS },
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{ "sample_rates", "set the supported sample rates", OFFSET(sample_rates), AV_OPT_TYPE_BINARY, .flags = FLAGS },
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#if FF_API_OLD_CHANNEL_LAYOUT
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{ "channel_layouts", "set the supported channel layouts (deprecated, use ch_layouts)",
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OFFSET(channel_layouts), AV_OPT_TYPE_BINARY, .flags = FLAGS | AV_OPT_FLAG_DEPRECATED },
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{ "channel_counts", "set the supported channel counts (deprecated, use ch_layouts)",
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OFFSET(channel_counts), AV_OPT_TYPE_BINARY, .flags = FLAGS | AV_OPT_FLAG_DEPRECATED },
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#endif
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{ "ch_layouts", "set a '|'-separated list of supported channel layouts",
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OFFSET(channel_layouts_str), AV_OPT_TYPE_STRING, .flags = FLAGS },
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{ "all_channel_counts", "accept all channel counts", OFFSET(all_channel_counts), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS },
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{ NULL },
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};
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#undef FLAGS
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AVFILTER_DEFINE_CLASS(buffersink);
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AVFILTER_DEFINE_CLASS(abuffersink);
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const AVFilter ff_vsink_buffer = {
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.name = "buffersink",
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.description = NULL_IF_CONFIG_SMALL("Buffer video frames, and make them available to the end of the filter graph."),
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.priv_size = sizeof(BufferSinkContext),
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.priv_class = &buffersink_class,
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.init = common_init,
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.uninit = uninit,
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.activate = activate,
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FILTER_INPUTS(ff_video_default_filterpad),
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.outputs = NULL,
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FILTER_QUERY_FUNC(vsink_query_formats),
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};
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const AVFilter ff_asink_abuffer = {
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.name = "abuffersink",
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.description = NULL_IF_CONFIG_SMALL("Buffer audio frames, and make them available to the end of the filter graph."),
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.priv_class = &abuffersink_class,
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.priv_size = sizeof(BufferSinkContext),
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.init = common_init,
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.uninit = uninit,
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.activate = activate,
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FILTER_INPUTS(ff_audio_default_filterpad),
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.outputs = NULL,
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FILTER_QUERY_FUNC(asink_query_formats),
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};
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