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@@ -0,0 +1,789 @@
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+/*
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+ * ffmpeg filter configuration
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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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+#include "ffmpeg.h"
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+
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+#include "libavfilter/avfilter.h"
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+#include "libavfilter/avfiltergraph.h"
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+#include "libavfilter/buffersink.h"
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+
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+#include "libavutil/audioconvert.h"
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+#include "libavutil/avassert.h"
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+#include "libavutil/avstring.h"
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+#include "libavutil/bprint.h"
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+#include "libavutil/pixdesc.h"
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+#include "libavutil/pixfmt.h"
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+#include "libavutil/imgutils.h"
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+#include "libavutil/samplefmt.h"
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+
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+enum PixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum PixelFormat target)
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+{
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+ if (codec && codec->pix_fmts) {
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+ const enum PixelFormat *p = codec->pix_fmts;
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+ int has_alpha= av_pix_fmt_descriptors[target].nb_components % 2 == 0;
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+ enum PixelFormat best= PIX_FMT_NONE;
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+ if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
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+ if (st->codec->codec_id == AV_CODEC_ID_MJPEG) {
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+ p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
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+ } else if (st->codec->codec_id == AV_CODEC_ID_LJPEG) {
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+ p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
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+ PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
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+ }
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+ }
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+ for (; *p != PIX_FMT_NONE; p++) {
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+ best= avcodec_find_best_pix_fmt2(best, *p, target, has_alpha, NULL);
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+ if (*p == target)
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+ break;
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+ }
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+ if (*p == PIX_FMT_NONE) {
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+ if (target != PIX_FMT_NONE)
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+ av_log(NULL, AV_LOG_WARNING,
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+ "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
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+ av_pix_fmt_descriptors[target].name,
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+ codec->name,
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+ av_pix_fmt_descriptors[best].name);
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+ return best;
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+ }
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+ }
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+ return target;
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+}
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+
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+void choose_sample_fmt(AVStream *st, AVCodec *codec)
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+{
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+ if (codec && codec->sample_fmts) {
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+ const enum AVSampleFormat *p = codec->sample_fmts;
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+ for (; *p != -1; p++) {
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+ if (*p == st->codec->sample_fmt)
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+ break;
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+ }
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+ if (*p == -1) {
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+ if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
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+ av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
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+ if(av_get_sample_fmt_name(st->codec->sample_fmt))
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+ av_log(NULL, AV_LOG_WARNING,
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+ "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
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+ av_get_sample_fmt_name(st->codec->sample_fmt),
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+ codec->name,
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+ av_get_sample_fmt_name(codec->sample_fmts[0]));
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+ st->codec->sample_fmt = codec->sample_fmts[0];
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+ }
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+ }
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+}
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+
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+static char *choose_pix_fmts(OutputStream *ost)
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+{
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+ if (ost->keep_pix_fmt) {
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+ if (ost->filter)
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+ avfilter_graph_set_auto_convert(ost->filter->graph->graph,
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+ AVFILTER_AUTO_CONVERT_NONE);
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+ if (ost->st->codec->pix_fmt == PIX_FMT_NONE)
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+ return NULL;
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+ return av_strdup(av_get_pix_fmt_name(ost->st->codec->pix_fmt));
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+ }
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+ if (ost->st->codec->pix_fmt != PIX_FMT_NONE) {
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+ return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc, ost->st->codec->pix_fmt)));
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+ } else if (ost->enc && ost->enc->pix_fmts) {
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+ const enum PixelFormat *p;
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+ AVIOContext *s = NULL;
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+ uint8_t *ret;
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+ int len;
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+
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+ if (avio_open_dyn_buf(&s) < 0)
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+ exit_program(1);
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+
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+ p = ost->enc->pix_fmts;
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+ if (ost->st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
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+ if (ost->st->codec->codec_id == AV_CODEC_ID_MJPEG) {
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+ p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
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+ } else if (ost->st->codec->codec_id == AV_CODEC_ID_LJPEG) {
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+ p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
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+ PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
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+ }
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+ }
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+
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+ for (; *p != PIX_FMT_NONE; p++) {
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+ const char *name = av_get_pix_fmt_name(*p);
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+ avio_printf(s, "%s:", name);
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+ }
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+ len = avio_close_dyn_buf(s, &ret);
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+ ret[len - 1] = 0;
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+ return ret;
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+ } else
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+ return NULL;
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+}
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+
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+/**
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+ * Define a function for building a string containing a list of
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+ * allowed formats,
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+ */
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+#define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name, separator)\
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+static char *choose_ ## var ## s(OutputStream *ost) \
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+{ \
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+ if (ost->st->codec->var != none) { \
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+ get_name(ost->st->codec->var); \
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+ return av_strdup(name); \
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+ } else if (ost->enc->supported_list) { \
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+ const type *p; \
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+ AVIOContext *s = NULL; \
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+ uint8_t *ret; \
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+ int len; \
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+ \
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+ if (avio_open_dyn_buf(&s) < 0) \
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+ exit_program(1); \
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+ \
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+ for (p = ost->enc->supported_list; *p != none; p++) { \
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+ get_name(*p); \
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+ avio_printf(s, "%s" separator, name); \
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+ } \
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+ len = avio_close_dyn_buf(s, &ret); \
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+ ret[len - 1] = 0; \
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+ return ret; \
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+ } else \
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+ return NULL; \
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+}
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+
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+#define GET_PIX_FMT_NAME(pix_fmt)\
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+ const char *name = av_get_pix_fmt_name(pix_fmt);
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+
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+// DEF_CHOOSE_FORMAT(enum PixelFormat, pix_fmt, pix_fmts, PIX_FMT_NONE,
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+// GET_PIX_FMT_NAME, ":")
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+
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+#define GET_SAMPLE_FMT_NAME(sample_fmt)\
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+ const char *name = av_get_sample_fmt_name(sample_fmt)
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+
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+DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
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+ AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME, ",")
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+
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+#define GET_SAMPLE_RATE_NAME(rate)\
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+ char name[16];\
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+ snprintf(name, sizeof(name), "%d", rate);
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+
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+DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
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+ GET_SAMPLE_RATE_NAME, ",")
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+
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+#define GET_CH_LAYOUT_NAME(ch_layout)\
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+ char name[16];\
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+ snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
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+
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+DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
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+ GET_CH_LAYOUT_NAME, ",")
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+
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+FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
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+{
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+ FilterGraph *fg = av_mallocz(sizeof(*fg));
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+
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+ if (!fg)
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+ exit_program(1);
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+ fg->index = nb_filtergraphs;
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+
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+ fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs), &fg->nb_outputs,
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+ fg->nb_outputs + 1);
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+ if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
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+ exit_program(1);
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+ fg->outputs[0]->ost = ost;
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+ fg->outputs[0]->graph = fg;
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+
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+ ost->filter = fg->outputs[0];
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+
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+ fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs), &fg->nb_inputs,
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+ fg->nb_inputs + 1);
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+ if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
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+ exit_program(1);
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+ fg->inputs[0]->ist = ist;
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+ fg->inputs[0]->graph = fg;
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+
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+ ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
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+ &ist->nb_filters, ist->nb_filters + 1);
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+ ist->filters[ist->nb_filters - 1] = fg->inputs[0];
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+
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+ filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
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+ &nb_filtergraphs, nb_filtergraphs + 1);
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+ filtergraphs[nb_filtergraphs - 1] = fg;
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+
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+ return fg;
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+}
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+
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+static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
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+{
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+ InputStream *ist = NULL;
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+ enum AVMediaType type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx);
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+ int i;
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+
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+ // TODO: support other filter types
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+ if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
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+ av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
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+ "currently.\n");
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+ exit_program(1);
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+ }
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+
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+ if (in->name) {
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+ AVFormatContext *s;
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+ AVStream *st = NULL;
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+ char *p;
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+ int file_idx = strtol(in->name, &p, 0);
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+
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+ if (file_idx < 0 || file_idx >= nb_input_files) {
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+ av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
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+ file_idx, fg->graph_desc);
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+ exit_program(1);
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+ }
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+ s = input_files[file_idx]->ctx;
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+
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+ for (i = 0; i < s->nb_streams; i++) {
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+ enum AVMediaType stream_type = s->streams[i]->codec->codec_type;
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+ if (stream_type != type &&
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+ !(stream_type == AVMEDIA_TYPE_SUBTITLE &&
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+ type == AVMEDIA_TYPE_VIDEO /* sub2video hack */))
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+ continue;
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+ if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
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+ st = s->streams[i];
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+ break;
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+ }
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+ }
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+ if (!st) {
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+ av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
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+ "matches no streams.\n", p, fg->graph_desc);
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+ exit_program(1);
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+ }
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+ ist = input_streams[input_files[file_idx]->ist_index + st->index];
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+ } else {
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+ /* find the first unused stream of corresponding type */
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+ for (i = 0; i < nb_input_streams; i++) {
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+ ist = input_streams[i];
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+ if (ist->st->codec->codec_type == type && ist->discard)
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+ break;
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+ }
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+ if (i == nb_input_streams) {
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+ av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
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+ "unlabeled input pad %d on filter %s\n", in->pad_idx,
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+ in->filter_ctx->name);
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+ exit_program(1);
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+ }
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+ }
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+ av_assert0(ist);
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+
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+ ist->discard = 0;
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+ ist->decoding_needed = 1;
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+ ist->st->discard = AVDISCARD_NONE;
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+
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+ fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs),
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+ &fg->nb_inputs, fg->nb_inputs + 1);
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+ if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
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+ exit_program(1);
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+ fg->inputs[fg->nb_inputs - 1]->ist = ist;
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+ fg->inputs[fg->nb_inputs - 1]->graph = fg;
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+
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+ ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
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+ &ist->nb_filters, ist->nb_filters + 1);
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+ ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
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+}
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+
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+static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
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+{
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+ char *pix_fmts;
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+ OutputStream *ost = ofilter->ost;
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+ AVCodecContext *codec = ost->st->codec;
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+ AVFilterContext *last_filter = out->filter_ctx;
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+ int pad_idx = out->pad_idx;
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+ int ret;
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+ char name[255];
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+ AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
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+
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+ snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
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+ ret = avfilter_graph_create_filter(&ofilter->filter,
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+ avfilter_get_by_name("buffersink"),
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+ name, NULL, NULL/*buffersink_params*/, fg->graph);
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+ av_freep(&buffersink_params);
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+
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+ if (ret < 0)
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+ return ret;
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+
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+ if (codec->width || codec->height) {
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+ char args[255];
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+ AVFilterContext *filter;
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+
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+ snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
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+ codec->width,
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+ codec->height,
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+ (unsigned)ost->sws_flags);
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+ snprintf(name, sizeof(name), "scaler for output stream %d:%d",
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+ ost->file_index, ost->index);
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+ if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
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+ name, args, NULL, fg->graph)) < 0)
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+ return ret;
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+ if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
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+ return ret;
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+
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+ last_filter = filter;
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+ pad_idx = 0;
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+ }
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+
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+ if ((pix_fmts = choose_pix_fmts(ost))) {
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+ AVFilterContext *filter;
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+ snprintf(name, sizeof(name), "pixel format for output stream %d:%d",
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+ ost->file_index, ost->index);
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+ if ((ret = avfilter_graph_create_filter(&filter,
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+ avfilter_get_by_name("format"),
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+ "format", pix_fmts, NULL,
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+ fg->graph)) < 0)
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+ return ret;
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+ if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
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+ return ret;
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+
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+ last_filter = filter;
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+ pad_idx = 0;
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+ av_freep(&pix_fmts);
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+ }
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+
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+ if (ost->frame_rate.num && 0) {
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+ AVFilterContext *fps;
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+ char args[255];
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|
|
+
|
|
|
+ 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;
|
|
|
+ }
|
|
|
+
|
|
|
+ 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;
|
|
|
+ AVCodecContext *codec = ost->st->codec;
|
|
|
+ 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;
|
|
|
+
|
|
|
+#define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do { \
|
|
|
+ AVFilterContext *filt_ctx; \
|
|
|
+ \
|
|
|
+ av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi " \
|
|
|
+ "similarly to -af " filter_name "=%s.\n", arg); \
|
|
|
+ \
|
|
|
+ ret = avfilter_graph_create_filter(&filt_ctx, \
|
|
|
+ avfilter_get_by_name(filter_name), \
|
|
|
+ filter_name, arg, NULL, fg->graph); \
|
|
|
+ if (ret < 0) \
|
|
|
+ return ret; \
|
|
|
+ \
|
|
|
+ ret = avfilter_link(last_filter, pad_idx, filt_ctx, 0); \
|
|
|
+ if (ret < 0) \
|
|
|
+ return ret; \
|
|
|
+ \
|
|
|
+ last_filter = filt_ctx; \
|
|
|
+ pad_idx = 0; \
|
|
|
+} while (0)
|
|
|
+ if (ost->audio_channels_mapped) {
|
|
|
+ int i;
|
|
|
+ AVBPrint pan_buf;
|
|
|
+ av_bprint_init(&pan_buf, 256, 8192);
|
|
|
+ av_bprintf(&pan_buf, "0x%"PRIx64,
|
|
|
+ av_get_default_channel_layout(ost->audio_channels_mapped));
|
|
|
+ for (i = 0; i < ost->audio_channels_mapped; i++)
|
|
|
+ if (ost->audio_channels_map[i] != -1)
|
|
|
+ av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
|
|
|
+
|
|
|
+ AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
|
|
|
+ av_bprint_finalize(&pan_buf, NULL);
|
|
|
+ }
|
|
|
+
|
|
|
+ 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;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (audio_volume != 256 && 0) {
|
|
|
+ char args[256];
|
|
|
+
|
|
|
+ snprintf(args, sizeof(args), "%f", audio_volume / 256.);
|
|
|
+ AUTO_INSERT_FILTER("-vol", "volume", args);
|
|
|
+ }
|
|
|
+
|
|
|
+ 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->input_count : ctx->output_count; \
|
|
|
+ AVIOContext *pb; \
|
|
|
+ \
|
|
|
+ if (avio_open_dyn_buf(&pb) < 0) \
|
|
|
+ exit_program(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 sub2video_prepare(InputStream *ist)
|
|
|
+{
|
|
|
+ AVFormatContext *avf = input_files[ist->file_index]->ctx;
|
|
|
+ int i, ret, w, h;
|
|
|
+ uint8_t *image[4];
|
|
|
+ int linesize[4];
|
|
|
+
|
|
|
+ /* Compute the size of the canvas for the subtitles stream.
|
|
|
+ If the subtitles codec has set a size, use it. Otherwise use the
|
|
|
+ maximum dimensions of the video streams in the same file. */
|
|
|
+ w = ist->st->codec->width;
|
|
|
+ h = ist->st->codec->height;
|
|
|
+ if (!(w && h)) {
|
|
|
+ for (i = 0; i < avf->nb_streams; i++) {
|
|
|
+ if (avf->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
|
|
|
+ w = FFMAX(w, avf->streams[i]->codec->width);
|
|
|
+ h = FFMAX(h, avf->streams[i]->codec->height);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (!(w && h)) {
|
|
|
+ w = FFMAX(w, 720);
|
|
|
+ h = FFMAX(h, 576);
|
|
|
+ }
|
|
|
+ av_log(avf, AV_LOG_INFO, "sub2video: using %dx%d canvas\n", w, h);
|
|
|
+ }
|
|
|
+ ist->sub2video.w = ist->st->codec->width = w;
|
|
|
+ ist->sub2video.h = ist->st->codec->height = h;
|
|
|
+
|
|
|
+ /* rectangles are PIX_FMT_PAL8, but we have no guarantee that the
|
|
|
+ palettes for all rectangles are identical or compatible */
|
|
|
+ ist->st->codec->pix_fmt = PIX_FMT_RGB32;
|
|
|
+
|
|
|
+ ret = av_image_alloc(image, linesize, w, h, PIX_FMT_RGB32, 32);
|
|
|
+ if (ret < 0)
|
|
|
+ return ret;
|
|
|
+ memset(image[0], 0, h * linesize[0]);
|
|
|
+ ist->sub2video.ref = avfilter_get_video_buffer_ref_from_arrays(
|
|
|
+ image, linesize, AV_PERM_READ | AV_PERM_PRESERVE,
|
|
|
+ w, h, PIX_FMT_RGB32);
|
|
|
+ if (!ist->sub2video.ref) {
|
|
|
+ av_free(image[0]);
|
|
|
+ return AVERROR(ENOMEM);
|
|
|
+ }
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
|
|
|
+ AVFilterInOut *in)
|
|
|
+{
|
|
|
+ AVFilterContext *first_filter = in->filter_ctx;
|
|
|
+ AVFilter *filter = avfilter_get_by_name("buffer");
|
|
|
+ InputStream *ist = ifilter->ist;
|
|
|
+ AVRational tb = ist->framerate.num ? av_inv_q(ist->framerate) :
|
|
|
+ ist->st->time_base;
|
|
|
+ AVRational fr = ist->framerate.num ? ist->framerate :
|
|
|
+ ist->st->r_frame_rate;
|
|
|
+ AVRational sar;
|
|
|
+ AVBPrint args;
|
|
|
+ char name[255];
|
|
|
+ int pad_idx = in->pad_idx;
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ if (ist->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
|
|
|
+ ret = sub2video_prepare(ist);
|
|
|
+ if (ret < 0)
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+
|
|
|
+ sar = ist->st->sample_aspect_ratio.num ?
|
|
|
+ ist->st->sample_aspect_ratio :
|
|
|
+ ist->st->codec->sample_aspect_ratio;
|
|
|
+ if(!sar.den)
|
|
|
+ sar = (AVRational){0,1};
|
|
|
+ av_bprint_init(&args, 0, 1);
|
|
|
+ av_bprintf(&args,
|
|
|
+ "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:"
|
|
|
+ "pixel_aspect=%d/%d:sws_param=flags=%d", ist->st->codec->width,
|
|
|
+ ist->st->codec->height, ist->st->codec->pix_fmt,
|
|
|
+ tb.num, tb.den, sar.num, sar.den,
|
|
|
+ SWS_BILINEAR + ((ist->st->codec->flags&CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
|
|
|
+ if (fr.num && fr.den)
|
|
|
+ av_bprintf(&args, ":frame_rate=%d/%d", fr.num, fr.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, filter, name,
|
|
|
+ args.str, NULL, fg->graph)) < 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(setpts, 0, first_filter, pad_idx)) < 0)
|
|
|
+ return ret;
|
|
|
+
|
|
|
+ first_filter = setpts;
|
|
|
+ pad_idx = 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
|
|
|
+ return ret;
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter,
|
|
|
+ AVFilterInOut *in)
|
|
|
+{
|
|
|
+ AVFilterContext *first_filter = in->filter_ctx;
|
|
|
+ AVFilter *filter = avfilter_get_by_name("abuffer");
|
|
|
+ InputStream *ist = ifilter->ist;
|
|
|
+ int pad_idx = in->pad_idx;
|
|
|
+ char args[255], name[255];
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:sample_fmt=%s"
|
|
|
+ ":channel_layout=0x%"PRIx64,
|
|
|
+ 1, ist->st->codec->sample_rate,
|
|
|
+ ist->st->codec->sample_rate,
|
|
|
+ av_get_sample_fmt_name(ist->st->codec->sample_fmt),
|
|
|
+ ist->st->codec->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, filter,
|
|
|
+ name, args, NULL,
|
|
|
+ fg->graph)) < 0)
|
|
|
+ return ret;
|
|
|
+
|
|
|
+#define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg) do { \
|
|
|
+ AVFilterContext *filt_ctx; \
|
|
|
+ \
|
|
|
+ av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi " \
|
|
|
+ "similarly to -af " filter_name "=%s.\n", arg); \
|
|
|
+ \
|
|
|
+ snprintf(name, sizeof(name), "graph %d %s for input stream %d:%d", \
|
|
|
+ fg->index, filter_name, ist->file_index, ist->st->index); \
|
|
|
+ ret = avfilter_graph_create_filter(&filt_ctx, \
|
|
|
+ avfilter_get_by_name(filter_name), \
|
|
|
+ name, arg, NULL, fg->graph); \
|
|
|
+ if (ret < 0) \
|
|
|
+ return ret; \
|
|
|
+ \
|
|
|
+ ret = avfilter_link(filt_ctx, 0, first_filter, pad_idx); \
|
|
|
+ if (ret < 0) \
|
|
|
+ return ret; \
|
|
|
+ \
|
|
|
+ first_filter = filt_ctx; \
|
|
|
+} while (0)
|
|
|
+
|
|
|
+ if (audio_sync_method > 0) {
|
|
|
+ char args[256] = {0};
|
|
|
+
|
|
|
+ av_strlcatf(args, sizeof(args), "min_comp=0.001:min_hard_comp=%f", audio_drift_threshold);
|
|
|
+ if (audio_sync_method > 1)
|
|
|
+ av_strlcatf(args, sizeof(args), ":max_soft_comp=%f", audio_sync_method/(double)ist->st->codec->sample_rate);
|
|
|
+ AUTO_INSERT_FILTER_INPUT("-async", "aresample", args);
|
|
|
+ }
|
|
|
+
|
|
|
+// if (ost->audio_channels_mapped) {
|
|
|
+// int i;
|
|
|
+// AVBPrint pan_buf;
|
|
|
+// av_bprint_init(&pan_buf, 256, 8192);
|
|
|
+// av_bprintf(&pan_buf, "0x%"PRIx64,
|
|
|
+// av_get_default_channel_layout(ost->audio_channels_mapped));
|
|
|
+// for (i = 0; i < ost->audio_channels_mapped; i++)
|
|
|
+// if (ost->audio_channels_map[i] != -1)
|
|
|
+// av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
|
|
|
+// AUTO_INSERT_FILTER_INPUT("-map_channel", "pan", pan_buf.str);
|
|
|
+// av_bprint_finalize(&pan_buf, NULL);
|
|
|
+// }
|
|
|
+
|
|
|
+ if (audio_volume != 256) {
|
|
|
+ char args[256];
|
|
|
+
|
|
|
+ snprintf(args, sizeof(args), "%f", audio_volume / 256.);
|
|
|
+ AUTO_INSERT_FILTER_INPUT("-vol", "volume", args);
|
|
|
+ }
|
|
|
+ if ((ret = avfilter_link(ifilter->filter, 0, first_filter, 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, init = !fg->graph, 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[255];
|
|
|
+ snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
|
|
|
+ fg->graph->scale_sws_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; !simple && init && cur; cur = cur->next)
|
|
|
+ init_input_filter(fg, cur);
|
|
|
+
|
|
|
+ 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);
|
|
|
+
|
|
|
+ if (!init || simple) {
|
|
|
+ /* we already know the mappings between lavfi outputs and output streams,
|
|
|
+ * so we can finish the setup */
|
|
|
+ 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;
|
|
|
+ } else {
|
|
|
+ /* wait until output mappings are processed */
|
|
|
+ for (cur = outputs; cur;) {
|
|
|
+ fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs),
|
|
|
+ &fg->nb_outputs, fg->nb_outputs + 1);
|
|
|
+ if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
|
|
|
+ exit_program(1);
|
|
|
+ fg->outputs[fg->nb_outputs - 1]->graph = fg;
|
|
|
+ fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
|
|
|
+ cur = cur->next;
|
|
|
+ fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ 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;
|
|
|
+}
|
|
|
+
|
Michael Niedermayer