diff options
Diffstat (limited to 'libavfilter/buffersink.c')
-rw-r--r-- | libavfilter/buffersink.c | 270 |
1 files changed, 0 insertions, 270 deletions
diff --git a/libavfilter/buffersink.c b/libavfilter/buffersink.c deleted file mode 100644 index f682216..0000000 --- a/libavfilter/buffersink.c +++ /dev/null @@ -1,270 +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 { - AVFrame *cur_frame; ///< last frame delivered on the sink - 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; - - if (sink->audio_fifo) - av_audio_fifo_free(sink->audio_fifo); -} - -static int filter_frame(AVFilterLink *link, AVFrame *frame) -{ - BufferSinkContext *s = link->dst->priv; - -// av_assert0(!s->cur_frame); - s->cur_frame = frame; - - return 0; -} - -<<<<<<< HEAD -int ff_buffersink_read_compat(AVFilterContext *ctx, AVFilterBufferRef **buf) -||||||| merged common ancestors -int av_buffersink_read(AVFilterContext *ctx, AVFilterBufferRef **buf) -======= -int av_buffersink_get_frame(AVFilterContext *ctx, AVFrame *frame) ->>>>>>> 7e350379f87e7f74420b4813170fe808e2313911 -{ - BufferSinkContext *s = ctx->priv; - AVFilterLink *link = ctx->inputs[0]; - int ret; - - if ((ret = ff_request_frame(link)) < 0) - return ret; - - if (!s->cur_frame) - return AVERROR(EINVAL); - - av_frame_move_ref(frame, s->cur_frame); - av_frame_free(&s->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; - -} - -<<<<<<< HEAD -int ff_buffersink_read_samples_compat(AVFilterContext *ctx, AVFilterBufferRef **pbuf, - int nb_samples) -||||||| merged common ancestors -int av_buffersink_read_samples(AVFilterContext *ctx, AVFilterBufferRef **pbuf, - int nb_samples) -======= -int av_buffersink_get_samples(AVFilterContext *ctx, AVFrame *frame, int nb_samples) ->>>>>>> 7e350379f87e7f74420b4813170fe808e2313911 -{ - BufferSinkContext *s = ctx->priv; - AVFilterLink *link = ctx->inputs[0]; - int ret = 0; - - if (!s->audio_fifo) { - int nb_channels = av_get_channel_layout_nb_channels(link->channel_layout); - 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); - - ret = ff_request_frame(link); - if (ret == AVERROR_EOF && av_audio_fifo_size(s->audio_fifo)) - return read_from_fifo(ctx, frame, av_audio_fifo_size(s->audio_fifo)); - else if (ret < 0) - return ret; - - if (s->cur_frame->pts != AV_NOPTS_VALUE) { - s->next_pts = s->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**)s->cur_frame->extended_data, - s->cur_frame->nb_samples); - av_frame_free(&s->cur_frame); - } - - return ret; - -} - -#if FF_API_AVFILTERBUFFER -static void compat_free_buffer(AVFilterBuffer *buf) -{ - AVFrame *frame = buf->priv; - av_frame_free(&frame); - av_free(buf); -} - -static int compat_read(AVFilterContext *ctx, AVFilterBufferRef **pbuf, int nb_samples) -{ - 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(ctx, frame); - 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); -} - -int av_buffersink_read_samples(AVFilterContext *ctx, AVFilterBufferRef **buf, - int nb_samples) -{ - return compat_read(ctx, buf, nb_samples); -} -#endif - -static const AVFilterPad avfilter_vsink_buffer_inputs[] = { - { - .name = "default", - .type = AVMEDIA_TYPE_VIDEO, - .filter_frame = filter_frame, - .needs_fifo = 1 - }, - { NULL } -}; - -AVFilter avfilter_vsink_buffer = { -#if AV_HAVE_INCOMPATIBLE_FORK_ABI - .name = "buffersink", -#else - .name = "buffersink_old", -#endif - .description = NULL_IF_CONFIG_SMALL("Buffer video frames, and make them available to the end of the filter graph."), - .priv_size = sizeof(BufferSinkContext), - .uninit = uninit, - - .inputs = avfilter_vsink_buffer_inputs, - .outputs = NULL, -}; - -static const AVFilterPad avfilter_asink_abuffer_inputs[] = { - { - .name = "default", - .type = AVMEDIA_TYPE_AUDIO, - .filter_frame = filter_frame, - .needs_fifo = 1 - }, - { NULL } -}; - -AVFilter avfilter_asink_abuffer = { -#if AV_HAVE_INCOMPATIBLE_FORK_ABI - .name = "abuffersink", -#else - .name = "abuffersink_old", -#endif - .description = NULL_IF_CONFIG_SMALL("Buffer audio frames, and make them available to the end of the filter graph."), - .priv_size = sizeof(BufferSinkContext), - .uninit = uninit, - - .inputs = avfilter_asink_abuffer_inputs, - .outputs = NULL, -}; 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