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-rw-r--r--avconv_filter.c722
1 files changed, 0 insertions, 722 deletions
diff --git a/avconv_filter.c b/avconv_filter.c
deleted file mode 100644
index 18deb1f891..0000000000
--- a/avconv_filter.c
+++ /dev/null
@@ -1,722 +0,0 @@
-/*
- * avconv filter configuration
- *
- * This file is part of Libav.
- *
- * Libav 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,
- * 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
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <stdint.h>
-
-#include "avconv.h"
-
-#include "libavfilter/avfilter.h"
-
-#include "libavresample/avresample.h"
-
-#include "libavutil/avassert.h"
-#include "libavutil/avstring.h"
-#include "libavutil/channel_layout.h"
-#include "libavutil/display.h"
-#include "libavutil/opt.h"
-#include "libavutil/pixdesc.h"
-#include "libavutil/pixfmt.h"
-#include "libavutil/samplefmt.h"
-
-/* Define a function for building a string containing a list of
- * allowed formats. */
-#define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name) \
-static char *choose_ ## var ## s(OutputStream *ost) \
-{ \
- if (ost->enc_ctx->var != none) { \
- get_name(ost->enc_ctx->var); \
- return av_strdup(name); \
- } else if (ost->enc && ost->enc->supported_list) { \
- const type *p; \
- AVIOContext *s = NULL; \
- uint8_t *ret; \
- int len; \
- \
- if (avio_open_dyn_buf(&s) < 0) \
- exit(1); \
- \
- for (p = ost->enc->supported_list; *p != none; p++) { \
- get_name(*p); \
- avio_printf(s, "%s|", name); \
- } \
- len = avio_close_dyn_buf(s, &ret); \
- ret[len - 1] = 0; \
- return ret; \
- } else \
- return NULL; \
-}
-
-DEF_CHOOSE_FORMAT(enum AVPixelFormat, pix_fmt, pix_fmts, AV_PIX_FMT_NONE,
- GET_PIX_FMT_NAME)
-
-DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
- AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME)
-
-DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
- GET_SAMPLE_RATE_NAME)
-
-DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
- GET_CH_LAYOUT_NAME)
-
-FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
-{
- FilterGraph *fg = av_mallocz(sizeof(*fg));
-
- if (!fg)
- exit(1);
- fg->index = nb_filtergraphs;
-
- GROW_ARRAY(fg->outputs, fg->nb_outputs);
- if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
- exit(1);
- fg->outputs[0]->ost = ost;
- fg->outputs[0]->graph = fg;
-
- ost->filter = fg->outputs[0];
-
- GROW_ARRAY(fg->inputs, fg->nb_inputs);
- if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
- exit(1);
- fg->inputs[0]->ist = ist;
- fg->inputs[0]->graph = fg;
-
- GROW_ARRAY(ist->filters, ist->nb_filters);
- ist->filters[ist->nb_filters - 1] = fg->inputs[0];
-
- GROW_ARRAY(filtergraphs, nb_filtergraphs);
- filtergraphs[nb_filtergraphs - 1] = fg;
-
- return fg;
-}
-
-static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
-{
- InputStream *ist = NULL;
- enum AVMediaType type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx);
- int i;
-
- // TODO: support other filter types
- if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
- av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
- "currently.\n");
- exit(1);
- }
-
- if (in->name) {
- AVFormatContext *s;
- AVStream *st = NULL;
- char *p;
- int file_idx = strtol(in->name, &p, 0);
-
- if (file_idx < 0 || file_idx >= nb_input_files) {
- av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtegraph description %s.\n",
- file_idx, fg->graph_desc);
- exit(1);
- }
- s = input_files[file_idx]->ctx;
-
- for (i = 0; i < s->nb_streams; i++) {
- if (s->streams[i]->codec->codec_type != type)
- continue;
- if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
- st = s->streams[i];
- break;
- }
- }
- if (!st) {
- av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
- "matches no streams.\n", p, fg->graph_desc);
- exit(1);
- }
- ist = input_streams[input_files[file_idx]->ist_index + st->index];
- } else {
- /* find the first unused stream of corresponding type */
- for (i = 0; i < nb_input_streams; i++) {
- ist = input_streams[i];
- if (ist->dec_ctx->codec_type == type && ist->discard)
- break;
- }
- if (i == nb_input_streams) {
- av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
- "unlabeled input pad %d on filter %s\n", in->pad_idx,
- in->filter_ctx->name);
- exit(1);
- }
- }
- av_assert0(ist);
-
- ist->discard = 0;
- ist->decoding_needed = 1;
- ist->st->discard = AVDISCARD_NONE;
-
- GROW_ARRAY(fg->inputs, fg->nb_inputs);
- if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
- exit(1);
- fg->inputs[fg->nb_inputs - 1]->ist = ist;
- fg->inputs[fg->nb_inputs - 1]->graph = fg;
-
- GROW_ARRAY(ist->filters, ist->nb_filters);
- ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
-}
-
-int init_complex_filtergraph(FilterGraph *fg)
-{
- AVFilterInOut *inputs, *outputs, *cur;
- AVFilterGraph *graph;
- int ret = 0;
-
- /* this graph is only used for determining the kinds of inputs
- * and outputs we have, and is discarded on exit from this function */
- graph = avfilter_graph_alloc();
- if (!graph)
- return AVERROR(ENOMEM);
-
- ret = avfilter_graph_parse2(graph, fg->graph_desc, &inputs, &outputs);
- if (ret < 0)
- goto fail;
-
- for (cur = inputs; cur; cur = cur->next)
- init_input_filter(fg, cur);
-
- for (cur = outputs; cur;) {
- GROW_ARRAY(fg->outputs, fg->nb_outputs);
- fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]));
- if (!fg->outputs[fg->nb_outputs - 1])
- exit(1);
-
- fg->outputs[fg->nb_outputs - 1]->graph = fg;
- fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
- fg->outputs[fg->nb_outputs - 1]->type = avfilter_pad_get_type(cur->filter_ctx->output_pads,
- cur->pad_idx);
- cur = cur->next;
- fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
- }
-
-fail:
- avfilter_inout_free(&inputs);
- avfilter_graph_free(&graph);
- return ret;
-}
-
-static int insert_trim(int64_t start_time, int64_t duration,
- AVFilterContext **last_filter, int *pad_idx,
- const char *filter_name)
-{
- AVFilterGraph *graph = (*last_filter)->graph;
- AVFilterContext *ctx;
- const AVFilter *trim;
- enum AVMediaType type = avfilter_pad_get_type((*last_filter)->output_pads, *pad_idx);
- const char *name = (type == AVMEDIA_TYPE_VIDEO) ? "trim" : "atrim";
- int ret = 0;
-
- if (duration == INT64_MAX && start_time == AV_NOPTS_VALUE)
- return 0;
-
- trim = avfilter_get_by_name(name);
- if (!trim) {
- av_log(NULL, AV_LOG_ERROR, "%s filter not present, cannot limit "
- "recording time.\n", name);
- return AVERROR_FILTER_NOT_FOUND;
- }
-
- ctx = avfilter_graph_alloc_filter(graph, trim, filter_name);
- if (!ctx)
- return AVERROR(ENOMEM);
-
- if (duration != INT64_MAX) {
- ret = av_opt_set_double(ctx, "duration", (double)duration / 1e6,
- AV_OPT_SEARCH_CHILDREN);
- }
- if (ret >= 0 && start_time != AV_NOPTS_VALUE) {
- ret = av_opt_set_double(ctx, "start", (double)start_time / 1e6,
- AV_OPT_SEARCH_CHILDREN);
- }
- if (ret < 0) {
- av_log(ctx, AV_LOG_ERROR, "Error configuring the %s filter", name);
- return ret;
- }
-
- ret = avfilter_init_str(ctx, NULL);
- if (ret < 0)
- return ret;
-
- ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
- if (ret < 0)
- return ret;
-
- *last_filter = ctx;
- *pad_idx = 0;
- return 0;
-}
-
-static int insert_filter(AVFilterContext **last_filter, int *pad_idx,
- const char *filter_name, const char *args)
-{
- AVFilterGraph *graph = (*last_filter)->graph;
- AVFilterContext *ctx;
- int ret;
-
- ret = avfilter_graph_create_filter(&ctx,
- avfilter_get_by_name(filter_name),
- filter_name, args, NULL, graph);
- if (ret < 0)
- return ret;
-
- ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
- if (ret < 0)
- return ret;
-
- *last_filter = ctx;
- *pad_idx = 0;
- return 0;
-}
-
-static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
-{
- char *pix_fmts;
- OutputStream *ost = ofilter->ost;
- OutputFile *of = output_files[ost->file_index];
- AVCodecContext *codec = ost->enc_ctx;
- AVFilterContext *last_filter = out->filter_ctx;
- int pad_idx = out->pad_idx;
- int ret;
- char name[255];
-
- snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
- ret = avfilter_graph_create_filter(&ofilter->filter,
- avfilter_get_by_name("buffersink"),
- name, NULL, NULL, fg->graph);
- if (ret < 0)
- return ret;
-
- if (codec->width || codec->height) {
- char args[255];
- AVFilterContext *filter;
-
- snprintf(args, sizeof(args), "%d:%d:0x%X",
- codec->width,
- codec->height,
- (unsigned)ost->sws_flags);
- snprintf(name, sizeof(name), "scaler for output stream %d:%d",
- ost->file_index, ost->index);
- if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
- name, args, NULL, fg->graph)) < 0)
- return ret;
- if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
- return ret;
-
- last_filter = filter;
- pad_idx = 0;
- }
-
- if ((pix_fmts = choose_pix_fmts(ost))) {
- AVFilterContext *filter;
- snprintf(name, sizeof(name), "pixel format for output stream %d:%d",
- ost->file_index, ost->index);
- ret = avfilter_graph_create_filter(&filter,
- avfilter_get_by_name("format"),
- "format", pix_fmts, NULL, fg->graph);
- av_freep(&pix_fmts);
- if (ret < 0)
- return ret;
- if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
- return ret;
-
- last_filter = filter;
- pad_idx = 0;
- }
-
- if (ost->frame_rate.num) {
- AVFilterContext *fps;
- char args[255];
-
- snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num,
- ost->frame_rate.den);
- snprintf(name, sizeof(name), "fps for output stream %d:%d",
- ost->file_index, ost->index);
- ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"),
- name, args, NULL, fg->graph);
- if (ret < 0)
- return ret;
-
- ret = avfilter_link(last_filter, pad_idx, fps, 0);
- if (ret < 0)
- return ret;
- last_filter = fps;
- pad_idx = 0;
- }
-
- snprintf(name, sizeof(name), "trim for output stream %d:%d",
- ost->file_index, ost->index);
- ret = insert_trim(of->start_time, of->recording_time,
- &last_filter, &pad_idx, name);
- if (ret < 0)
- return ret;
-
-
- if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
- return ret;
-
- return 0;
-}
-
-static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
-{
- OutputStream *ost = ofilter->ost;
- OutputFile *of = output_files[ost->file_index];
- AVCodecContext *codec = ost->enc_ctx;
- AVFilterContext *last_filter = out->filter_ctx;
- int pad_idx = out->pad_idx;
- char *sample_fmts, *sample_rates, *channel_layouts;
- char name[255];
- int ret;
-
-
- snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
- ret = avfilter_graph_create_filter(&ofilter->filter,
- avfilter_get_by_name("abuffersink"),
- name, NULL, NULL, fg->graph);
- if (ret < 0)
- return ret;
-
- if (codec->channels && !codec->channel_layout)
- codec->channel_layout = av_get_default_channel_layout(codec->channels);
-
- sample_fmts = choose_sample_fmts(ost);
- sample_rates = choose_sample_rates(ost);
- channel_layouts = choose_channel_layouts(ost);
- if (sample_fmts || sample_rates || channel_layouts) {
- AVFilterContext *format;
- char args[256];
- int len = 0;
-
- if (sample_fmts)
- len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:",
- sample_fmts);
- if (sample_rates)
- len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:",
- sample_rates);
- if (channel_layouts)
- len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:",
- channel_layouts);
- args[len - 1] = 0;
-
- av_freep(&sample_fmts);
- av_freep(&sample_rates);
- av_freep(&channel_layouts);
-
- snprintf(name, sizeof(name), "audio format for output stream %d:%d",
- ost->file_index, ost->index);
- ret = avfilter_graph_create_filter(&format,
- avfilter_get_by_name("aformat"),
- name, args, NULL, fg->graph);
- if (ret < 0)
- return ret;
-
- ret = avfilter_link(last_filter, pad_idx, format, 0);
- if (ret < 0)
- return ret;
-
- last_filter = format;
- pad_idx = 0;
- }
-
- snprintf(name, sizeof(name), "trim for output stream %d:%d",
- ost->file_index, ost->index);
- ret = insert_trim(of->start_time, of->recording_time,
- &last_filter, &pad_idx, name);
- if (ret < 0)
- return ret;
-
- if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
- return ret;
-
- return 0;
-}
-
-#define DESCRIBE_FILTER_LINK(f, inout, in) \
-{ \
- AVFilterContext *ctx = inout->filter_ctx; \
- AVFilterPad *pads = in ? ctx->input_pads : ctx->output_pads; \
- int nb_pads = in ? ctx->nb_inputs : ctx->nb_outputs; \
- AVIOContext *pb; \
- \
- if (avio_open_dyn_buf(&pb) < 0) \
- exit(1); \
- \
- avio_printf(pb, "%s", ctx->filter->name); \
- if (nb_pads > 1) \
- avio_printf(pb, ":%s", avfilter_pad_get_name(pads, inout->pad_idx));\
- avio_w8(pb, 0); \
- avio_close_dyn_buf(pb, &f->name); \
-}
-
-int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
-{
- av_freep(&ofilter->name);
- DESCRIBE_FILTER_LINK(ofilter, out, 0);
-
- switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) {
- case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
- case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
- default: av_assert0(0);
- }
-}
-
-static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
- AVFilterInOut *in)
-{
- AVFilterContext *last_filter;
- const AVFilter *buffer_filt = avfilter_get_by_name("buffer");
- InputStream *ist = ifilter->ist;
- InputFile *f = input_files[ist->file_index];
- AVRational tb = ist->framerate.num ? av_inv_q(ist->framerate) :
- ist->st->time_base;
- AVRational sar;
- char args[255], name[255];
- int ret, pad_idx = 0;
-
- sar = ist->st->sample_aspect_ratio.num ?
- ist->st->sample_aspect_ratio :
- ist->dec_ctx->sample_aspect_ratio;
- snprintf(args, sizeof(args), "%d:%d:%d:%d:%d:%d:%d", ist->dec_ctx->width,
- ist->dec_ctx->height,
- ist->hwaccel_retrieve_data ? ist->hwaccel_retrieved_pix_fmt : ist->dec_ctx->pix_fmt,
- tb.num, tb.den, sar.num, sar.den);
- snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
- ist->file_index, ist->st->index);
-
- if ((ret = avfilter_graph_create_filter(&ifilter->filter, buffer_filt, name,
- args, NULL, fg->graph)) < 0)
- return ret;
- last_filter = ifilter->filter;
-
- if (ist->autorotate) {
- uint8_t* displaymatrix = av_stream_get_side_data(ist->st,
- AV_PKT_DATA_DISPLAYMATRIX, NULL);
- if (displaymatrix) {
- double rot = av_display_rotation_get((int32_t*) displaymatrix);
- if (rot < -135 || rot > 135) {
- ret = insert_filter(&last_filter, &pad_idx, "vflip", NULL);
- if (ret < 0)
- return ret;
- ret = insert_filter(&last_filter, &pad_idx, "hflip", NULL);
- } else if (rot < -45) {
- ret = insert_filter(&last_filter, &pad_idx, "transpose", "dir=clock");
- } else if (rot > 45) {
- ret = insert_filter(&last_filter, &pad_idx, "transpose", "dir=cclock");
- }
- if (ret < 0)
- return ret;
- }
- }
-
- if (ist->framerate.num) {
- AVFilterContext *setpts;
-
- snprintf(name, sizeof(name), "force CFR for input from stream %d:%d",
- ist->file_index, ist->st->index);
- if ((ret = avfilter_graph_create_filter(&setpts,
- avfilter_get_by_name("setpts"),
- name, "N", NULL,
- fg->graph)) < 0)
- return ret;
-
- if ((ret = avfilter_link(last_filter, 0, setpts, 0)) < 0)
- return ret;
-
- last_filter = setpts;
- }
-
- snprintf(name, sizeof(name), "trim for input stream %d:%d",
- ist->file_index, ist->st->index);
- ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ?
- AV_NOPTS_VALUE : 0, f->recording_time, &last_filter, &pad_idx, name);
- if (ret < 0)
- return ret;
-
- if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0)
- return ret;
- return 0;
-}
-
-static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter,
- AVFilterInOut *in)
-{
- AVFilterContext *last_filter;
- const AVFilter *abuffer_filt = avfilter_get_by_name("abuffer");
- InputStream *ist = ifilter->ist;
- InputFile *f = input_files[ist->file_index];
- char args[255], name[255];
- int ret, pad_idx = 0;
-
- snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:sample_fmt=%s"
- ":channel_layout=0x%"PRIx64,
- 1, ist->dec_ctx->sample_rate,
- ist->dec_ctx->sample_rate,
- av_get_sample_fmt_name(ist->dec_ctx->sample_fmt),
- ist->dec_ctx->channel_layout);
- snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
- ist->file_index, ist->st->index);
-
- if ((ret = avfilter_graph_create_filter(&ifilter->filter, abuffer_filt,
- name, args, NULL,
- fg->graph)) < 0)
- return ret;
- last_filter = ifilter->filter;
-
- if (audio_sync_method > 0) {
- AVFilterContext *async;
- int len = 0;
-
- av_log(NULL, AV_LOG_WARNING, "-async has been deprecated. Used the "
- "asyncts audio filter instead.\n");
-
- if (audio_sync_method > 1)
- len += snprintf(args + len, sizeof(args) - len, "compensate=1:"
- "max_comp=%d:", audio_sync_method);
- snprintf(args + len, sizeof(args) - len, "min_delta=%f",
- audio_drift_threshold);
-
- snprintf(name, sizeof(name), "graph %d audio sync for input stream %d:%d",
- fg->index, ist->file_index, ist->st->index);
- ret = avfilter_graph_create_filter(&async,
- avfilter_get_by_name("asyncts"),
- name, args, NULL, fg->graph);
- if (ret < 0)
- return ret;
-
- ret = avfilter_link(last_filter, 0, async, 0);
- if (ret < 0)
- return ret;
-
- last_filter = async;
- }
- if (audio_volume != 256) {
- AVFilterContext *volume;
-
- av_log(NULL, AV_LOG_WARNING, "-vol has been deprecated. Use the volume "
- "audio filter instead.\n");
-
- snprintf(args, sizeof(args), "volume=%f", audio_volume / 256.0);
-
- snprintf(name, sizeof(name), "graph %d volume for input stream %d:%d",
- fg->index, ist->file_index, ist->st->index);
- ret = avfilter_graph_create_filter(&volume,
- avfilter_get_by_name("volume"),
- name, args, NULL, fg->graph);
- if (ret < 0)
- return ret;
-
- ret = avfilter_link(last_filter, 0, volume, 0);
- if (ret < 0)
- return ret;
-
- last_filter = volume;
- }
-
- snprintf(name, sizeof(name), "trim for input stream %d:%d",
- ist->file_index, ist->st->index);
- ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ?
- AV_NOPTS_VALUE : 0, f->recording_time, &last_filter, &pad_idx, name);
- if (ret < 0)
- return ret;
-
- if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0)
- return ret;
-
- return 0;
-}
-
-static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter,
- AVFilterInOut *in)
-{
- av_freep(&ifilter->name);
- DESCRIBE_FILTER_LINK(ifilter, in, 1);
-
- switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) {
- case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
- case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);
- default: av_assert0(0);
- }
-}
-
-int configure_filtergraph(FilterGraph *fg)
-{
- AVFilterInOut *inputs, *outputs, *cur;
- int ret, i, simple = !fg->graph_desc;
- const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
- fg->graph_desc;
-
- avfilter_graph_free(&fg->graph);
- if (!(fg->graph = avfilter_graph_alloc()))
- return AVERROR(ENOMEM);
-
- if (simple) {
- OutputStream *ost = fg->outputs[0]->ost;
- char args[512];
- AVDictionaryEntry *e = NULL;
-
- snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
- fg->graph->scale_sws_opts = av_strdup(args);
-
- args[0] = '\0';
- while ((e = av_dict_get(fg->outputs[0]->ost->resample_opts, "", e,
- AV_DICT_IGNORE_SUFFIX))) {
- av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
- }
- if (strlen(args))
- args[strlen(args) - 1] = '\0';
- fg->graph->resample_lavr_opts = av_strdup(args);
- }
-
- if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
- return ret;
-
- if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
- av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' does not have "
- "exactly one input and output.\n", graph_desc);
- return AVERROR(EINVAL);
- }
-
- for (cur = inputs, i = 0; cur; cur = cur->next, i++)
- if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0)
- return ret;
- avfilter_inout_free(&inputs);
-
- for (cur = outputs, i = 0; cur; cur = cur->next, i++)
- configure_output_filter(fg, fg->outputs[i], cur);
- avfilter_inout_free(&outputs);
-
- if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
- return ret;
-
- return 0;
-}
-
-int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
-{
- int i;
- for (i = 0; i < fg->nb_inputs; i++)
- if (fg->inputs[i]->ist == ist)
- return 1;
- return 0;
-}
-
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