diff options
Diffstat (limited to 'libavfilter/buffersink.c')
-rw-r--r-- | libavfilter/buffersink.c | 427 |
1 files changed, 392 insertions, 35 deletions
diff --git a/libavfilter/buffersink.c b/libavfilter/buffersink.c index 2a22948..a6b24ad 100644 --- a/libavfilter/buffersink.c +++ b/libavfilter/buffersink.c @@ -1,20 +1,20 @@ /* * Copyright (c) 2011 Stefano Sabatini * - * 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 */ @@ -29,6 +29,7 @@ #include "libavutil/common.h" #include "libavutil/internal.h" #include "libavutil/mathematics.h" +#include "libavutil/opt.h" #include "audio.h" #include "avfilter.h" @@ -36,44 +37,120 @@ #include "internal.h" typedef struct { - AVFrame *cur_frame; ///< last frame delivered on the sink + const AVClass *class; + 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 + int pixel_fmts_size; + + /* only used for audio */ + enum AVSampleFormat *sample_fmts; ///< list of accepted sample formats, terminated by AV_SAMPLE_FMT_NONE + int sample_fmts_size; + int64_t *channel_layouts; ///< list of accepted channel layouts, terminated by -1 + int channel_layouts_size; + int *channel_counts; ///< list of accepted channel counts, terminated by -1 + int channel_counts_size; + int all_channel_counts; + int *sample_rates; ///< list of accepted sample rates, terminated by -1 + int sample_rates_size; + + /* only used for compat API */ AVAudioFifo *audio_fifo; ///< FIFO for audio samples int64_t next_pts; ///< interpolating audio pts } BufferSinkContext; +#define NB_ITEMS(list) (list ## _size / sizeof(*list)) + 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_free(&frame); + } + av_fifo_free(sink->fifo); + sink->fifo = NULL; + } } -static int filter_frame(AVFilterLink *link, AVFrame *frame) +static int add_buffer_ref(AVFilterContext *ctx, AVFrame *ref) { - BufferSinkContext *s = link->dst->priv; - - av_assert0(!s->cur_frame); - s->cur_frame = frame; + 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; } -int attribute_align_arg av_buffersink_get_frame(AVFilterContext *ctx, - AVFrame *frame) +static int filter_frame(AVFilterLink *link, AVFrame *frame) { - BufferSinkContext *s = ctx->priv; - AVFilterLink *link = ctx->inputs[0]; + AVFilterContext *ctx = link->dst; + BufferSinkContext *buf = link->dst->priv; int ret; - if ((ret = ff_request_frame(link)) < 0) + 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; +} - if (!s->cur_frame) +int attribute_align_arg 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); - av_frame_move_ref(frame, s->cur_frame); - av_frame_free(&s->cur_frame); + 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; } @@ -90,8 +167,9 @@ static int read_from_fifo(AVFilterContext *ctx, AVFrame *frame, 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); + if (s->next_pts != AV_NOPTS_VALUE) + 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); @@ -104,10 +182,11 @@ int attribute_align_arg av_buffersink_get_samples(AVFilterContext *ctx, { BufferSinkContext *s = ctx->priv; AVFilterLink *link = ctx->inputs[0]; + AVFrame *cur_frame; int ret = 0; if (!s->audio_fifo) { - int nb_channels = av_get_channel_layout_nb_channels(link->channel_layout); + int nb_channels = link->channels; if (!(s->audio_fifo = av_audio_fifo_alloc(link->format, nb_channels, nb_samples))) return AVERROR(ENOMEM); } @@ -116,27 +195,76 @@ int attribute_align_arg av_buffersink_get_samples(AVFilterContext *ctx, 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)) + 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) + } else if (ret < 0) { + av_frame_free(&cur_frame); return ret; + } - if (s->cur_frame->pts != AV_NOPTS_VALUE) { - s->next_pts = s->cur_frame->pts - + 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**)s->cur_frame->extended_data, - s->cur_frame->nb_samples); - av_frame_free(&s->cur_frame); + 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; + buf->next_pts = AV_NOPTS_VALUE; + 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 FF_DISABLE_DEPRECATION_WARNINGS static void compat_free_buffer(AVFilterBuffer *buf) @@ -147,7 +275,7 @@ static void compat_free_buffer(AVFilterBuffer *buf) } static int compat_read(AVFilterContext *ctx, - AVFilterBufferRef **pbuf, int nb_samples) + AVFilterBufferRef **pbuf, int nb_samples, int flags) { AVFilterBufferRef *buf; AVFrame *frame; @@ -161,13 +289,14 @@ static int compat_read(AVFilterContext *ctx, return AVERROR(ENOMEM); if (!nb_samples) - ret = av_buffersink_get_frame(ctx, frame); + ret = av_buffersink_get_frame_flags(ctx, frame, flags); else ret = av_buffersink_get_samples(ctx, frame, nb_samples); if (ret < 0) goto fail; + AV_NOWARN_DEPRECATED( if (ctx->inputs[0]->type == AVMEDIA_TYPE_VIDEO) { buf = avfilter_get_video_buffer_ref_from_arrays(frame->data, frame->linesize, AV_PERM_READ, @@ -186,6 +315,7 @@ static int compat_read(AVFilterContext *ctx, } avfilter_copy_frame_props(buf, frame); + ) buf->buf->priv = frame; buf->buf->free = compat_free_buffer; @@ -200,23 +330,245 @@ fail: int attribute_align_arg av_buffersink_read(AVFilterContext *ctx, AVFilterBufferRef **buf) { - return compat_read(ctx, buf, 0); + return compat_read(ctx, buf, 0, 0); } int attribute_align_arg av_buffersink_read_samples(AVFilterContext *ctx, AVFilterBufferRef **buf, int nb_samples) { - return compat_read(ctx, buf, nb_samples); + return compat_read(ctx, buf, nb_samples, 0); +} + +int attribute_align_arg 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); } FF_ENABLE_DEPRECATION_WARNINGS #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, void *opaque) +{ + BufferSinkContext *buf = ctx->priv; + AVBufferSinkParams *params = opaque; + int ret; + + if (params) { + if ((ret = av_opt_set_int_list(buf, "pix_fmts", params->pixel_fmts, AV_PIX_FMT_NONE, 0)) < 0) + return ret; + } + + return common_init(ctx); +} + +#define CHECK_LIST_SIZE(field) \ + if (buf->field ## _size % sizeof(*buf->field)) { \ + av_log(ctx, AV_LOG_ERROR, "Invalid size for " #field ": %d, " \ + "should be multiple of %d\n", \ + buf->field ## _size, (int)sizeof(*buf->field)); \ + return AVERROR(EINVAL); \ + } +static int vsink_query_formats(AVFilterContext *ctx) +{ + BufferSinkContext *buf = ctx->priv; + AVFilterFormats *formats = NULL; + unsigned i; + int ret; + + CHECK_LIST_SIZE(pixel_fmts) + if (buf->pixel_fmts_size) { + for (i = 0; i < NB_ITEMS(buf->pixel_fmts); i++) + if ((ret = ff_add_format(&formats, buf->pixel_fmts[i])) < 0) { + ff_formats_unref(&formats); + return ret; + } + ff_set_common_formats(ctx, formats); + } else { + ff_default_query_formats(ctx); + } + + return 0; +} + +static av_cold int asink_init(AVFilterContext *ctx, void *opaque) +{ + BufferSinkContext *buf = ctx->priv; + AVABufferSinkParams *params = opaque; + int ret; + + if (params) { + if ((ret = av_opt_set_int_list(buf, "sample_fmts", params->sample_fmts, AV_SAMPLE_FMT_NONE, 0)) < 0 || + (ret = av_opt_set_int_list(buf, "sample_rates", params->sample_rates, -1, 0)) < 0 || + (ret = av_opt_set_int_list(buf, "channel_layouts", params->channel_layouts, -1, 0)) < 0 || + (ret = av_opt_set_int_list(buf, "channel_counts", params->channel_counts, -1, 0)) < 0 || + (ret = av_opt_set_int(buf, "all_channel_counts", params->all_channel_counts, 0)) < 0) + return ret; + } + return common_init(ctx); +} + +static int asink_query_formats(AVFilterContext *ctx) +{ + BufferSinkContext *buf = ctx->priv; + AVFilterFormats *formats = NULL; + AVFilterChannelLayouts *layouts = NULL; + unsigned i; + int ret; + + CHECK_LIST_SIZE(sample_fmts) + CHECK_LIST_SIZE(sample_rates) + CHECK_LIST_SIZE(channel_layouts) + CHECK_LIST_SIZE(channel_counts) + + if (buf->sample_fmts_size) { + for (i = 0; i < NB_ITEMS(buf->sample_fmts); i++) + if ((ret = ff_add_format(&formats, buf->sample_fmts[i])) < 0) { + ff_formats_unref(&formats); + return ret; + } + ff_set_common_formats(ctx, formats); + } + + if (buf->channel_layouts_size || buf->channel_counts_size || + buf->all_channel_counts) { + for (i = 0; i < NB_ITEMS(buf->channel_layouts); i++) + if ((ret = ff_add_channel_layout(&layouts, buf->channel_layouts[i])) < 0) { + ff_channel_layouts_unref(&layouts); + return ret; + } + for (i = 0; i < NB_ITEMS(buf->channel_counts); i++) + if ((ret = ff_add_channel_layout(&layouts, FF_COUNT2LAYOUT(buf->channel_counts[i]))) < 0) { + ff_channel_layouts_unref(&layouts); + return ret; + } + if (buf->all_channel_counts) { + if (layouts) + av_log(ctx, AV_LOG_WARNING, + "Conflicting all_channel_counts and list in options\n"); + else if (!(layouts = ff_all_channel_counts())) + return AVERROR(ENOMEM); + } + ff_set_common_channel_layouts(ctx, layouts); + } + + if (buf->sample_rates_size) { + formats = NULL; + for (i = 0; i < NB_ITEMS(buf->sample_rates); i++) + if ((ret = ff_add_format(&formats, buf->sample_rates[i])) < 0) { + ff_formats_unref(&formats); + return ret; + } + ff_set_common_samplerates(ctx, formats); + } + + return 0; +} + +#define OFFSET(x) offsetof(BufferSinkContext, x) +#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM +static const AVOption buffersink_options[] = { + { "pix_fmts", "set the supported pixel formats", OFFSET(pixel_fmts), AV_OPT_TYPE_BINARY, .flags = FLAGS }, + { NULL }, +}; +#undef FLAGS +#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM +static const AVOption abuffersink_options[] = { + { "sample_fmts", "set the supported sample formats", OFFSET(sample_fmts), AV_OPT_TYPE_BINARY, .flags = FLAGS }, + { "sample_rates", "set the supported sample rates", OFFSET(sample_rates), AV_OPT_TYPE_BINARY, .flags = FLAGS }, + { "channel_layouts", "set the supported channel layouts", OFFSET(channel_layouts), AV_OPT_TYPE_BINARY, .flags = FLAGS }, + { "channel_counts", "set the supported channel counts", OFFSET(channel_counts), AV_OPT_TYPE_BINARY, .flags = FLAGS }, + { "all_channel_counts", "accept all channel counts", OFFSET(all_channel_counts), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, FLAGS }, + { NULL }, +}; +#undef FLAGS + +AVFILTER_DEFINE_CLASS(buffersink); +AVFILTER_DEFINE_CLASS(abuffersink); + +#if FF_API_AVFILTERBUFFER + +#define ffbuffersink_options buffersink_options +#define ffabuffersink_options abuffersink_options +AVFILTER_DEFINE_CLASS(ffbuffersink); +AVFILTER_DEFINE_CLASS(ffabuffersink); + +static const AVFilterPad ffbuffersink_inputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .filter_frame = filter_frame, + }, + { NULL }, +}; + +AVFilter ff_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), + .priv_class = &ffbuffersink_class, + .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 ff_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), + .priv_class = &ffabuffersink_class, + .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, - .needs_fifo = 1 }, { NULL } }; @@ -225,8 +577,11 @@ AVFilter ff_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), + .priv_class = &buffersink_class, + .init_opaque = vsink_init, .uninit = uninit, + .query_formats = vsink_query_formats, .inputs = avfilter_vsink_buffer_inputs, .outputs = NULL, }; @@ -236,7 +591,6 @@ static const AVFilterPad avfilter_asink_abuffer_inputs[] = { .name = "default", .type = AVMEDIA_TYPE_AUDIO, .filter_frame = filter_frame, - .needs_fifo = 1 }, { NULL } }; @@ -244,9 +598,12 @@ static const AVFilterPad avfilter_asink_abuffer_inputs[] = { AVFilter ff_asink_abuffer = { .name = "abuffersink", .description = NULL_IF_CONFIG_SMALL("Buffer audio frames, and make them available to the end of the filter graph."), + .priv_class = &abuffersink_class, .priv_size = sizeof(BufferSinkContext), + .init_opaque = asink_init, .uninit = uninit, + .query_formats = asink_query_formats, .inputs = avfilter_asink_abuffer_inputs, .outputs = NULL, }; |