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-rw-r--r--common/encode_lavc.c1115
1 files changed, 1115 insertions, 0 deletions
diff --git a/common/encode_lavc.c b/common/encode_lavc.c
new file mode 100644
index 0000000000..97a45ccbbe
--- /dev/null
+++ b/common/encode_lavc.c
@@ -0,0 +1,1115 @@
+/*
+ * muxing using libavformat
+ * Copyright (C) 2010 Nicolas George <george@nsup.org>
+ * Copyright (C) 2011-2012 Rudolf Polzer <divVerent@xonotic.org>
+ *
+ * This file is part of mpv.
+ *
+ * MPlayer is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * MPlayer 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with MPlayer; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <libavutil/avutil.h>
+
+#include "encode_lavc.h"
+#include "common/msg.h"
+#include "video/vfcap.h"
+#include "options/options.h"
+#include "osdep/timer.h"
+#include "video/out/vo.h"
+#include "talloc.h"
+#include "stream/stream.h"
+
+static int set_to_avdictionary(AVDictionary **dictp, const char *key,
+ const char *val)
+{
+ char keybuf[1024];
+ char valuebuf[1024];
+
+ if (key == NULL) {
+ // we need to split at equals sign
+ const char *equals = strchr(val, '=');
+ if (!equals || equals - val >= sizeof(keybuf)) {
+ mp_msg(MSGT_ENCODE, MSGL_WARN,
+ "encode-lavc: option '%s' does not contain an equals sign\n",
+ val);
+ return 0;
+ }
+ memcpy(keybuf, val, equals - val);
+ keybuf[equals - val] = 0;
+ key = keybuf;
+ val = equals + 1;
+ }
+
+ // hack: support "qscale" key as virtual "global_quality" key that multiplies by QP2LAMBDA
+ if (!strcmp(key, "qscale")) {
+ key = "global_quality";
+ snprintf(valuebuf, sizeof(valuebuf),
+ "%.1s(%s)*QP2LAMBDA",
+ (val[0] == '+' || val[0] == '-') ? val : "",
+ (val[0] == '+' || val[0] == '-') ? val + 1 : val);
+ valuebuf[sizeof(valuebuf) - 1] = 0;
+ val = valuebuf;
+ }
+
+ mp_msg(MSGT_ENCODE, MSGL_V,
+ "encode-lavc: setting value '%s' for key '%s'\n",
+ val,
+ key);
+
+ if (av_dict_set(dictp, key, *val ? val : NULL,
+ (val[0] == '+' || val[0] == '-') ? AV_DICT_APPEND : 0) >= 0)
+ return 1;
+
+ return 0;
+}
+
+static bool value_has_flag(const char *value, const char *flag)
+{
+ bool state = true;
+ bool ret = false;
+ while (*value) {
+ size_t l = strcspn(value, "+-");
+ if (l == 0) {
+ state = (*value == '+');
+ ++value;
+ } else {
+ if (l == strlen(flag))
+ if (!memcmp(value, flag, l))
+ ret = state;
+ value += l;
+ }
+ }
+ return ret;
+}
+
+#define CHECK_FAIL(ctx, val) \
+ if (ctx && (ctx->failed || ctx->finished)) { \
+ mp_msg(MSGT_ENCODE, MSGL_ERR, \
+ "Called a function on a %s encoding context. Bailing out.\n", \
+ ctx->failed ? "failed" : "finished"); \
+ return val; \
+ }
+
+int encode_lavc_available(struct encode_lavc_context *ctx)
+{
+ CHECK_FAIL(ctx, 0);
+ return ctx && ctx->avc;
+}
+
+int encode_lavc_oformat_flags(struct encode_lavc_context *ctx)
+{
+ CHECK_FAIL(ctx, 0);
+ return ctx->avc ? ctx->avc->oformat->flags : 0;
+}
+
+struct encode_lavc_context *encode_lavc_init(struct encode_output_conf *options)
+{
+ struct encode_lavc_context *ctx;
+ const char *filename = options->file;
+
+ // STUPID STUPID STUPID STUPID avio
+ // does not support "-" as file name to mean stdin/stdout
+ // ffmpeg.c works around this too, the same way
+ if (!strcmp(filename, "-"))
+ filename = "pipe:1";
+
+ if (filename && (
+ !strcmp(filename, "/dev/stdout") ||
+ !strcmp(filename, "pipe:") ||
+ !strcmp(filename, "pipe:1")))
+ mp_msg_stdout_in_use = 1;
+
+ ctx = talloc_zero(NULL, struct encode_lavc_context);
+ encode_lavc_discontinuity(ctx);
+ ctx->options = options;
+
+ ctx->avc = avformat_alloc_context();
+
+ if (ctx->options->format) {
+ char *tok;
+ const char *in = ctx->options->format;
+ while (*in) {
+ tok = av_get_token(&in, ",");
+ ctx->avc->oformat = av_guess_format(tok, filename, NULL);
+ av_free(tok);
+ if (ctx->avc->oformat)
+ break;
+ if (*in)
+ ++in;
+ }
+ } else
+ ctx->avc->oformat = av_guess_format(NULL, filename, NULL);
+
+ if (!ctx->avc->oformat) {
+ encode_lavc_fail(ctx, "encode-lavc: format not found\n");
+ return NULL;
+ }
+
+ av_strlcpy(ctx->avc->filename, filename,
+ sizeof(ctx->avc->filename));
+
+ ctx->foptions = NULL;
+ if (ctx->options->fopts) {
+ char **p;
+ for (p = ctx->options->fopts; *p; ++p) {
+ if (!set_to_avdictionary(&ctx->foptions, NULL, *p))
+ mp_msg(MSGT_ENCODE, MSGL_WARN,
+ "encode-lavc: could not set option %s\n", *p);
+ }
+ }
+
+ if (ctx->options->vcodec) {
+ char *tok;
+ const char *in = ctx->options->vcodec;
+ while (*in) {
+ tok = av_get_token(&in, ",");
+ ctx->vc = avcodec_find_encoder_by_name(tok);
+ av_free(tok);
+ if (ctx->vc && ctx->vc->type != AVMEDIA_TYPE_VIDEO)
+ ctx->vc = NULL;
+ if (ctx->vc)
+ break;
+ if (*in)
+ ++in;
+ }
+ } else
+ ctx->vc = avcodec_find_encoder(av_guess_codec(ctx->avc->oformat, NULL,
+ ctx->avc->filename, NULL,
+ AVMEDIA_TYPE_VIDEO));
+
+ if (ctx->options->acodec) {
+ char *tok;
+ const char *in = ctx->options->acodec;
+ while (*in) {
+ tok = av_get_token(&in, ",");
+ ctx->ac = avcodec_find_encoder_by_name(tok);
+ av_free(tok);
+ if (ctx->ac && ctx->ac->type != AVMEDIA_TYPE_AUDIO)
+ ctx->ac = NULL;
+ if (ctx->ac)
+ break;
+ if (*in)
+ ++in;
+ }
+ } else
+ ctx->ac = avcodec_find_encoder(av_guess_codec(ctx->avc->oformat, NULL,
+ ctx->avc->filename, NULL,
+ AVMEDIA_TYPE_AUDIO));
+
+ if (!ctx->vc && !ctx->ac) {
+ encode_lavc_fail(
+ ctx, "encode-lavc: neither audio nor video codec was found\n");
+ return NULL;
+ }
+
+ /* taken from ffmpeg unchanged
+ * TODO turn this into an option if anyone needs this */
+
+ ctx->avc->max_delay = 0.7 * AV_TIME_BASE;
+
+ ctx->abytes = 0;
+ ctx->vbytes = 0;
+ ctx->frames = 0;
+
+ if (options->video_first)
+ ctx->video_first = true;
+ if (options->audio_first)
+ ctx->audio_first = true;
+
+ return ctx;
+}
+
+int encode_lavc_start(struct encode_lavc_context *ctx)
+{
+ AVDictionaryEntry *de;
+ unsigned i;
+
+ if (ctx->header_written < 0)
+ return 0;
+ if (ctx->header_written > 0)
+ return 1;
+
+ CHECK_FAIL(ctx, 0);
+
+ if (ctx->expect_video) {
+ for (i = 0; i < ctx->avc->nb_streams; ++i)
+ if (ctx->avc->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO)
+ break;
+ if (i >= ctx->avc->nb_streams) {
+ encode_lavc_fail(ctx,
+ "encode-lavc: video stream missing, invalid codec?\n");
+ return 0;
+ }
+ }
+ if (ctx->expect_audio) {
+ for (i = 0; i < ctx->avc->nb_streams; ++i)
+ if (ctx->avc->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO)
+ break;
+ if (i >= ctx->avc->nb_streams) {
+ encode_lavc_fail(ctx,
+ "encode-lavc: audio stream missing, invalid codec?\n");
+ return 0;
+ }
+ }
+
+ ctx->header_written = -1;
+
+ if (!(ctx->avc->oformat->flags & AVFMT_NOFILE)) {
+ mp_msg(MSGT_ENCODE, MSGL_INFO, "Opening output file: %s\n",
+ ctx->avc->filename);
+
+ if (avio_open(&ctx->avc->pb, ctx->avc->filename,
+ AVIO_FLAG_WRITE) < 0) {
+ encode_lavc_fail(ctx, "encode-lavc: could not open '%s'\n",
+ ctx->avc->filename);
+ return 0;
+ }
+ }
+
+ ctx->t0 = mp_time_sec();
+
+ mp_msg(MSGT_ENCODE, MSGL_INFO, "Opening muxer: %s [%s]\n",
+ ctx->avc->oformat->long_name, ctx->avc->oformat->name);
+
+ if (avformat_write_header(ctx->avc, &ctx->foptions) < 0) {
+ encode_lavc_fail(ctx, "encode-lavc: could not write header\n");
+ return 0;
+ }
+
+ for (de = NULL; (de = av_dict_get(ctx->foptions, "", de,
+ AV_DICT_IGNORE_SUFFIX));)
+ mp_msg(MSGT_ENCODE, MSGL_WARN, "ofopts: key '%s' not found.\n", de->key);
+ av_dict_free(&ctx->foptions);
+
+ ctx->header_written = 1;
+ return 1;
+}
+
+void encode_lavc_free(struct encode_lavc_context *ctx)
+{
+ if (!ctx)
+ return;
+
+ if (!ctx->finished)
+ encode_lavc_fail(ctx,
+ "called encode_lavc_free without encode_lavc_finish\n");
+
+ talloc_free(ctx);
+}
+
+void encode_lavc_finish(struct encode_lavc_context *ctx)
+{
+ unsigned i;
+
+ if (!ctx)
+ return;
+
+ if (ctx->finished)
+ return;
+
+ if (ctx->avc) {
+ if (ctx->header_written > 0)
+ av_write_trailer(ctx->avc); // this is allowed to fail
+
+ for (i = 0; i < ctx->avc->nb_streams; i++) {
+ switch (ctx->avc->streams[i]->codec->codec_type) {
+ case AVMEDIA_TYPE_VIDEO:
+ if (ctx->twopass_bytebuffer_v) {
+ char *stats = ctx->avc->streams[i]->codec->stats_out;
+ if (stats)
+ stream_write_buffer(ctx->twopass_bytebuffer_v,
+ stats, strlen(stats));
+ }
+ break;
+ case AVMEDIA_TYPE_AUDIO:
+ if (ctx->twopass_bytebuffer_a) {
+ char *stats = ctx->avc->streams[i]->codec->stats_out;
+ if (stats)
+ stream_write_buffer(ctx->twopass_bytebuffer_a,
+ stats, strlen(stats));
+ }
+ break;
+ default:
+ break;
+ }
+ avcodec_close(ctx->avc->streams[i]->codec);
+ talloc_free(ctx->avc->streams[i]->codec->stats_in);
+ av_free(ctx->avc->streams[i]->codec);
+ av_free(ctx->avc->streams[i]->info);
+ av_free(ctx->avc->streams[i]);
+ }
+
+ if (ctx->twopass_bytebuffer_v) {
+ free_stream(ctx->twopass_bytebuffer_v);
+ ctx->twopass_bytebuffer_v = NULL;
+ }
+
+ if (ctx->twopass_bytebuffer_a) {
+ free_stream(ctx->twopass_bytebuffer_a);
+ ctx->twopass_bytebuffer_a = NULL;
+ }
+
+ mp_msg(MSGT_ENCODE, MSGL_INFO, "vo-lavc: encoded %lld bytes\n",
+ ctx->vbytes);
+ mp_msg(MSGT_ENCODE, MSGL_INFO, "ao-lavc: encoded %lld bytes\n",
+ ctx->abytes);
+ if (ctx->avc->pb) {
+ mp_msg(MSGT_ENCODE, MSGL_INFO,
+ "encode-lavc: muxing overhead %lld bytes\n",
+ (long long) (avio_size(ctx->avc->pb) - ctx->vbytes
+ - ctx->abytes));
+ avio_close(ctx->avc->pb);
+ }
+
+ av_free(ctx->avc);
+ }
+
+ ctx->finished = true;
+}
+
+void encode_lavc_set_video_fps(struct encode_lavc_context *ctx, float fps)
+{
+ ctx->vo_fps = fps;
+}
+
+static void encode_2pass_prepare(struct encode_lavc_context *ctx,
+ AVDictionary **dictp,
+ AVStream *stream, struct stream **bytebuf,
+ const char *prefix)
+{
+ if (!*bytebuf) {
+ char buf[sizeof(ctx->avc->filename) + 12];
+ AVDictionaryEntry *de = av_dict_get(ctx->voptions, "flags", NULL, 0);
+
+ snprintf(buf, sizeof(buf), "%s-%s-pass1.log", ctx->avc->filename,
+ prefix);
+ buf[sizeof(buf) - 1] = 0;
+
+ if (value_has_flag(de ? de->value : "", "pass2")) {
+ if (!(*bytebuf = stream_open(buf, NULL))) {
+ mp_msg(MSGT_ENCODE, MSGL_WARN, "%s: could not open '%s', "
+ "disabling 2-pass encoding at pass 2\n", prefix, buf);
+ stream->codec->flags &= ~CODEC_FLAG_PASS2;
+ set_to_avdictionary(dictp, "flags", "-pass2");
+ } else {
+ struct bstr content = stream_read_complete(*bytebuf, NULL,
+ 1000000000);
+ if (content.start == NULL) {
+ mp_msg(MSGT_ENCODE, MSGL_WARN, "%s: could not read '%s', "
+ "disabling 2-pass encoding at pass 1\n",
+ prefix, ctx->avc->filename);
+ } else {
+ content.start[content.len] = 0;
+ stream->codec->stats_in = content.start;
+ }
+ free_stream(*bytebuf);
+ *bytebuf = NULL;
+ }
+ }
+
+ if (value_has_flag(de ? de->value : "", "pass1")) {
+ if (!(*bytebuf = open_output_stream(buf, NULL))) {
+ mp_msg(
+ MSGT_ENCODE, MSGL_WARN,
+ "%s: could not open '%s', disabling "
+ "2-pass encoding at pass 1\n",
+ prefix, ctx->avc->filename);
+ set_to_avdictionary(dictp, "flags", "-pass1");
+ }
+ }
+ }
+}
+
+AVStream *encode_lavc_alloc_stream(struct encode_lavc_context *ctx,
+ enum AVMediaType mt)
+{
+ AVDictionaryEntry *de;
+ AVStream *stream = NULL;
+ char **p;
+ int i;
+
+ CHECK_FAIL(ctx, NULL);
+
+ if (ctx->header_written)
+ return NULL;
+
+ for (i = 0; i < ctx->avc->nb_streams; ++i)
+ if (ctx->avc->streams[i]->codec->codec_type == mt)
+ // already have a stream of that type, this cannot really happen
+ return NULL;
+
+ if (ctx->avc->nb_streams == 0) {
+ // if this stream isn't stream #0, allocate a dummy stream first for
+ // the next loop to use
+ if (mt == AVMEDIA_TYPE_VIDEO && ctx->audio_first) {
+ mp_msg(MSGT_ENCODE, MSGL_INFO,
+ "vo-lavc: preallocated audio stream for later use\n");
+ avformat_new_stream(ctx->avc, NULL); // this one is AVMEDIA_TYPE_UNKNOWN for now
+ }
+ if (mt == AVMEDIA_TYPE_AUDIO && ctx->video_first) {
+ mp_msg(MSGT_ENCODE, MSGL_INFO,
+ "ao-lavc: preallocated video stream for later use\n");
+ avformat_new_stream(ctx->avc, NULL); // this one is AVMEDIA_TYPE_UNKNOWN for now
+ }
+ } else {
+ // find possibly preallocated stream
+ for (i = 0; i < ctx->avc->nb_streams; ++i)
+ if (ctx->avc->streams[i]->codec->codec_type == AVMEDIA_TYPE_UNKNOWN) // preallocated stream
+ stream = ctx->avc->streams[i];
+ }
+ if (!stream)
+ stream = avformat_new_stream(ctx->avc, NULL);
+
+ if (ctx->timebase.den == 0) {
+ AVRational r;
+
+ if (ctx->options->fps > 0)
+ r = av_d2q(ctx->options->fps, ctx->options->fps * 1001 + 2);
+ else if (ctx->options->autofps && ctx->vo_fps > 0) {
+ r = av_d2q(ctx->vo_fps, ctx->vo_fps * 1001 + 2);
+ mp_msg(
+ MSGT_ENCODE, MSGL_INFO, "vo-lavc: option --ofps not specified "
+ "but --oautofps is active, using guess of %u/%u\n",
+ (unsigned)r.num, (unsigned)r.den);
+ } else {
+ // we want to handle:
+ // 1/25
+ // 1001/24000
+ // 1001/30000
+ // for this we would need 120000fps...
+ // however, mpeg-4 only allows 16bit values
+ // so let's take 1001/30000 out
+ r.num = 24000;
+ r.den = 1;
+ mp_msg(
+ MSGT_ENCODE, MSGL_INFO, "vo-lavc: option --ofps not specified "
+ "and fps could not be inferred, using guess of %u/%u\n",
+ (unsigned)r.num, (unsigned)r.den);
+ }
+
+ if (ctx->vc && ctx->vc->supported_framerates)
+ r = ctx->vc->supported_framerates[av_find_nearest_q_idx(r,
+ ctx->vc->supported_framerates)];
+
+ ctx->timebase.num = r.den;
+ ctx->timebase.den = r.num;
+ }
+
+ switch (mt) {
+ case AVMEDIA_TYPE_VIDEO:
+ if (!ctx->vc) {
+ encode_lavc_fail(ctx, "vo-lavc: encoder not found\n");
+ return NULL;
+ }
+ avcodec_get_context_defaults3(stream->codec, ctx->vc);
+
+ // stream->time_base = ctx->timebase;
+ // doing this breaks mpeg2ts in ffmpeg
+ // which doesn't properly force the time base to be 90000
+ // furthermore, ffmpeg.c doesn't do this either and works
+
+ stream->codec->time_base = ctx->timebase;
+
+ ctx->voptions = NULL;
+
+ if (ctx->options->vopts)
+ for (p = ctx->options->vopts; *p; ++p)
+ if (!set_to_avdictionary(&ctx->voptions, NULL, *p))
+ mp_msg(MSGT_ENCODE, MSGL_WARN,
+ "vo-lavc: could not set option %s\n", *p);
+
+ de = av_dict_get(ctx->voptions, "global_quality", NULL, 0);
+ if (de)
+ set_to_avdictionary(&ctx->voptions, "flags", "+qscale");
+
+ if (ctx->avc->oformat->flags & AVFMT_GLOBALHEADER)
+ set_to_avdictionary(&ctx->voptions, "flags", "+global_header");
+
+ encode_2pass_prepare(ctx, &ctx->voptions, stream,
+ &ctx->twopass_bytebuffer_v,
+ "vo-lavc");
+ break;
+
+ case AVMEDIA_TYPE_AUDIO:
+ if (!ctx->ac) {
+ encode_lavc_fail(ctx, "ao-lavc: encoder not found\n");
+ return NULL;
+ }
+ avcodec_get_context_defaults3(stream->codec, ctx->ac);
+
+ stream->codec->time_base = ctx->timebase;
+
+ ctx->aoptions = NULL;
+
+ if (ctx->options->aopts)
+ for (p = ctx->options->aopts; *p; ++p)
+ if (!set_to_avdictionary(&ctx->aoptions, NULL, *p))
+ mp_msg(MSGT_ENCODE, MSGL_WARN,
+ "ao-lavc: could not set option %s\n", *p);
+
+ de = av_dict_get(ctx->aoptions, "global_quality", NULL, 0);
+ if (de)
+ set_to_avdictionary(&ctx->aoptions, "flags", "+qscale");
+
+ if (ctx->avc->oformat->flags & AVFMT_GLOBALHEADER)
+ set_to_avdictionary(&ctx->aoptions, "flags", "+global_header");
+
+ encode_2pass_prepare(ctx, &ctx->aoptions, stream,
+ &ctx->twopass_bytebuffer_a,
+ "ao-lavc");
+ break;
+
+ default:
+ encode_lavc_fail(ctx, "encode-lavc: requested invalid stream type\n");
+ return NULL;
+ }
+
+ return stream;
+}
+
+AVCodec *encode_lavc_get_codec(struct encode_lavc_context *ctx,
+ AVStream *stream)
+{
+ CHECK_FAIL(ctx, NULL);
+
+ switch (stream->codec->codec_type) {
+ case AVMEDIA_TYPE_VIDEO:
+ return ctx->vc;
+ case AVMEDIA_TYPE_AUDIO:
+ return ctx->ac;
+ default:
+ break;
+ }
+ return NULL;
+}
+
+int encode_lavc_open_codec(struct encode_lavc_context *ctx, AVStream *stream)
+{
+ AVDictionaryEntry *de;
+ int ret;
+
+ CHECK_FAIL(ctx, -1);
+
+ switch (stream->codec->codec_type) {
+ case AVMEDIA_TYPE_VIDEO:
+ mp_msg(MSGT_ENCODE, MSGL_INFO, "Opening video encoder: %s [%s]\n",
+ ctx->vc->long_name, ctx->vc->name);
+
+ if (ctx->vc->capabilities & CODEC_CAP_EXPERIMENTAL) {
+ stream->codec->strict_std_compliance = FF_COMPLIANCE_EXPERIMENTAL;
+ mp_msg(MSGT_ENCODE, MSGL_WARN, _(
+ "\n\n"
+ " ********************************************\n"
+ " **** Experimental VIDEO codec selected! ****\n"
+ " ********************************************\n\n"
+ "This means the output file may be broken or bad.\n"
+ "Possible reasons, problems, workarounds:\n"
+ "- Codec implementation in ffmpeg/libav is not finished yet.\n"
+ " Try updating ffmpeg or libav.\n"
+ "- Bad picture quality, blocks, blurriness.\n"
+ " Experiment with codec settings (--ovcopts) to maybe still get the\n"
+ " desired quality output at the expense of bitrate.\n"
+ "- Slow compression.\n"
+ " Bear with it.\n"
+ "- Crashes.\n"
+ " Happens. Try varying options to work around.\n"
+ "If none of this helps you, try another codec in place of %s.\n\n"),
+ ctx->vc->name);
+ }
+
+ ret = avcodec_open2(stream->codec, ctx->vc, &ctx->voptions);
+
+ // complain about all remaining options, then free the dict
+ for (de = NULL; (de = av_dict_get(ctx->voptions, "", de,
+ AV_DICT_IGNORE_SUFFIX));)
+ mp_msg(MSGT_ENCODE, MSGL_WARN, "ovcopts: key '%s' not found.\n",
+ de->key);
+ av_dict_free(&ctx->voptions);
+
+ break;
+ case AVMEDIA_TYPE_AUDIO:
+ mp_msg(MSGT_ENCODE, MSGL_INFO, "Opening audio encoder: %s [%s]\n",
+ ctx->ac->long_name, ctx->ac->name);
+
+ if (ctx->ac->capabilities & CODEC_CAP_EXPERIMENTAL) {
+ stream->codec->strict_std_compliance = FF_COMPLIANCE_EXPERIMENTAL;
+ mp_msg(MSGT_ENCODE, MSGL_WARN, _(
+ "\n\n"
+ " ********************************************\n"
+ " **** Experimental AUDIO codec selected! ****\n"
+ " ********************************************\n\n"
+ "This means the output file may be broken or bad.\n"
+ "Possible reasons, problems, workarounds:\n"
+ "- Codec implementation in ffmpeg/libav is not finished yet.\n"
+ " Try updating ffmpeg or libav.\n"
+ "- Bad sound quality, noise, clicking, whistles, choppiness.\n"
+ " Experiment with codec settings (--oacopts) to maybe still get the\n"
+ " desired quality output at the expense of bitrate.\n"
+ "- Slow compression.\n"
+ " Bear with it.\n"
+ "- Crashes.\n"
+ " Happens. Try varying options to work around.\n"
+ "If none of this helps you, try another codec in place of %s.\n\n"),
+ ctx->ac->name);
+ }
+ ret = avcodec_open2(stream->codec, ctx->ac, &ctx->aoptions);
+
+ // complain about all remaining options, then free the dict
+ for (de = NULL; (de = av_dict_get(ctx->aoptions, "", de,
+ AV_DICT_IGNORE_SUFFIX));)
+ mp_msg(MSGT_ENCODE, MSGL_WARN, "oacopts: key '%s' not found.\n",
+ de->key);
+ av_dict_free(&ctx->aoptions);
+
+ break;
+ default:
+ ret = -1;
+ break;
+ }
+
+ if (ret < 0)
+ encode_lavc_fail(ctx,
+ "unable to open encoder (see above for the cause)\n");
+
+ return ret;
+}
+
+void encode_lavc_write_stats(struct encode_lavc_context *ctx, AVStream *stream)
+{
+ CHECK_FAIL(ctx, );
+
+ switch (stream->codec->codec_type) {
+ case AVMEDIA_TYPE_VIDEO:
+ if (ctx->twopass_bytebuffer_v)
+ if (stream->codec->stats_out)
+ stream_write_buffer(ctx->twopass_bytebuffer_v,
+ stream->codec->stats_out,
+ strlen(stream->codec->stats_out));
+ break;
+ case AVMEDIA_TYPE_AUDIO:
+ if (ctx->twopass_bytebuffer_a)
+ if (stream->codec->stats_out)
+ stream_write_buffer(ctx->twopass_bytebuffer_a,
+ stream->codec->stats_out,
+ strlen(stream->codec->stats_out));
+ break;
+ default:
+ break;
+ }
+}
+
+int encode_lavc_write_frame(struct encode_lavc_context *ctx, AVPacket *packet)
+{
+ int r;
+
+ CHECK_FAIL(ctx, -1);
+
+ if (ctx->header_written <= 0)
+ return -1;
+
+ mp_msg(
+ MSGT_ENCODE, MSGL_DBG2,
+ "encode-lavc: write frame: stream %d ptsi %d (%f) dtsi %d (%f) size %d\n",
+ (int)packet->stream_index,
+ (int)packet->pts,
+ packet->pts
+ * (double)ctx->avc->streams[packet->stream_index]->time_base.num
+ / (double)ctx->avc->streams[packet->stream_index]->time_base.den,
+ (int)packet->dts,
+ packet->dts
+ * (double)ctx->avc->streams[packet->stream_index]->time_base.num
+ / (double)ctx->avc->streams[packet->stream_index]->time_base.den,
+ (int)packet->size);
+
+ switch (ctx->avc->streams[packet->stream_index]->codec->codec_type) {
+ case AVMEDIA_TYPE_VIDEO:
+ ctx->vbytes += packet->size;
+ ++ctx->frames;
+ break;
+ case AVMEDIA_TYPE_AUDIO:
+ ctx->abytes += packet->size;
+ ctx->audioseconds += packet->duration
+ * (double)ctx->avc->streams[packet->stream_index]->time_base.num
+ / (double)ctx->avc->streams[packet->stream_index]->time_base.den;
+ break;
+ default:
+ break;
+ }
+
+ r = av_interleaved_write_frame(ctx->avc, packet);
+
+ return r;
+}
+
+int encode_lavc_supports_pixfmt(struct encode_lavc_context *ctx,
+ enum AVPixelFormat pix_fmt)
+{
+ CHECK_FAIL(ctx, 0);
+
+ if (!ctx->vc)
+ return 0;
+ if (pix_fmt == AV_PIX_FMT_NONE)
+ return 0;
+
+ if (!ctx->vc->pix_fmts)
+ return VFCAP_CSP_SUPPORTED;
+ else {
+ const enum AVPixelFormat *p;
+ for (p = ctx->vc->pix_fmts; *p >= 0; ++p) {
+ if (pix_fmt == *p)
+ return VFCAP_CSP_SUPPORTED;
+ }
+ }
+ return 0;
+}
+
+void encode_lavc_discontinuity(struct encode_lavc_context *ctx)
+{
+ if (!ctx)
+ return;
+
+ CHECK_FAIL(ctx, );
+
+ ctx->audio_pts_offset = MP_NOPTS_VALUE;
+ ctx->last_video_in_pts = MP_NOPTS_VALUE;
+ ctx->discontinuity_pts_offset = MP_NOPTS_VALUE;
+}
+
+static void encode_lavc_printoptions(void *obj, const char *indent,
+ const char *subindent, const char *unit,
+ int filter_and, int filter_eq)
+{
+ const AVOption *opt = NULL;
+ char optbuf[32];
+ while ((opt = av_opt_next(obj, opt))) {
+ // if flags are 0, it simply hasn't been filled in yet and may be
+ // potentially useful
+ if (opt->flags)
+ if ((opt->flags & filter_and) != filter_eq)
+ continue;
+ /* Don't print CONST's on level one.
+ * Don't print anything but CONST's on level two.
+ * Only print items from the requested unit.
+ */
+ if (!unit && opt->type == AV_OPT_TYPE_CONST)
+ continue;
+ else if (unit && opt->type != AV_OPT_TYPE_CONST)
+ continue;
+ else if (unit && opt->type == AV_OPT_TYPE_CONST
+ && strcmp(unit, opt->unit))
+ continue;
+ else if (unit && opt->type == AV_OPT_TYPE_CONST)
+ mp_msg(MSGT_ENCODE, MSGL_INFO, "%s", subindent);
+ else
+ mp_msg(MSGT_ENCODE, MSGL_INFO, "%s", indent);
+
+ switch (opt->type) {
+ case AV_OPT_TYPE_FLAGS:
+ snprintf(optbuf, sizeof(optbuf), "%s=<flags>", opt->name);
+ break;
+ case AV_OPT_TYPE_INT:
+ snprintf(optbuf, sizeof(optbuf), "%s=<int>", opt->name);
+ break;
+ case AV_OPT_TYPE_INT64:
+ snprintf(optbuf, sizeof(optbuf), "%s=<int64>", opt->name);
+ break;
+ case AV_OPT_TYPE_DOUBLE:
+ snprintf(optbuf, sizeof(optbuf), "%s=<double>", opt->name);
+ break;
+ case AV_OPT_TYPE_FLOAT:
+ snprintf(optbuf, sizeof(optbuf), "%s=<float>", opt->name);
+ break;
+ case AV_OPT_TYPE_STRING:
+ snprintf(optbuf, sizeof(optbuf), "%s=<string>", opt->name);
+ break;
+ case AV_OPT_TYPE_RATIONAL:
+ snprintf(optbuf, sizeof(optbuf), "%s=<rational>", opt->name);
+ break;
+ case AV_OPT_TYPE_BINARY:
+ snprintf(optbuf, sizeof(optbuf), "%s=<binary>", opt->name);
+ break;
+ case AV_OPT_TYPE_CONST:
+ snprintf(optbuf, sizeof(optbuf), " [+-]%s", opt->name);
+ break;
+ default:
+ snprintf(optbuf, sizeof(optbuf), "%s", opt->name);
+ break;
+ }
+ optbuf[sizeof(optbuf) - 1] = 0;
+ mp_msg(MSGT_ENCODE, MSGL_INFO, "%-32s ", optbuf);
+ if (opt->help)
+ mp_msg(MSGT_ENCODE, MSGL_INFO, " %s", opt->help);
+ mp_msg(MSGT_ENCODE, MSGL_INFO, "\n");
+ if (opt->unit && opt->type != AV_OPT_TYPE_CONST)
+ encode_lavc_printoptions(obj, indent, subindent, opt->unit,
+ filter_and, filter_eq);
+ }
+}
+
+bool encode_lavc_showhelp(struct MPOpts *opts)
+{
+ bool help_output = false;
+ if (av_codec_next(NULL) == NULL)
+ mp_msg(MSGT_ENCODE, MSGL_ERR, "NO CODECS\n");
+#define CHECKS(str) ((str) && \
+ strcmp((str), "help") == 0 ? (help_output |= 1) : 0)
+#define CHECKV(strv) ((strv) && (strv)[0] && \
+ strcmp((strv)[0], "help") == 0 ? (help_output |= 1) : 0)
+ if (CHECKS(opts->encode_output.format)) {
+ AVOutputFormat *c = NULL;
+ mp_msg(MSGT_ENCODE, MSGL_INFO, "Available output formats:\n");
+ while ((c = av_oformat_next(c)))
+ mp_msg(MSGT_ENCODE, MSGL_INFO, " --of=%-13s %s\n", c->name,
+ c->long_name ? c->long_name : "");
+ av_free(c);
+ }
+ if (CHECKV(opts->encode_output.fopts)) {
+ AVFormatContext *c = avformat_alloc_context();
+ AVOutputFormat *format = NULL;
+ mp_msg(MSGT_ENCODE, MSGL_INFO,
+ "Available output format ctx->options:\n");
+ encode_lavc_printoptions(c, " --ofopts=", " ", NULL,
+ AV_OPT_FLAG_ENCODING_PARAM,
+ AV_OPT_FLAG_ENCODING_PARAM);
+ av_free(c);
+ while ((format = av_oformat_next(format))) {
+ if (format->priv_class) {
+ mp_msg(MSGT_ENCODE, MSGL_INFO, "Additionally, for --of=%s:\n",
+ format->name);
+ encode_lavc_printoptions(&format->priv_class, " --ofopts=",
+ " ", NULL,
+ AV_OPT_FLAG_ENCODING_PARAM,
+ AV_OPT_FLAG_ENCODING_PARAM);
+ }
+ }
+ }
+ if (CHECKV(opts->encode_output.vopts)) {
+ AVCodecContext *c = avcodec_alloc_context3(NULL);
+ AVCodec *codec = NULL;
+ mp_msg(MSGT_ENCODE, MSGL_INFO,
+ "Available output video codec ctx->options:\n");
+ encode_lavc_printoptions(
+ c, " --ovcopts=", " ", NULL,
+ AV_OPT_FLAG_ENCODING_PARAM |
+ AV_OPT_FLAG_VIDEO_PARAM,
+ AV_OPT_FLAG_ENCODING_PARAM |
+ AV_OPT_FLAG_VIDEO_PARAM);
+ av_free(c);
+ while ((codec = av_codec_next(codec))) {
+ if (!av_codec_is_encoder(codec))
+ continue;
+ if (codec->type != AVMEDIA_TYPE_VIDEO)
+ continue;
+ if (opts->encode_output.vcodec && opts->encode_output.vcodec[0] &&
+ strcmp(opts->encode_output.vcodec, codec->name) != 0)
+ continue;
+ if (codec->priv_class) {
+ mp_msg(MSGT_ENCODE, MSGL_INFO, "Additionally, for --ovc=%s:\n",
+ codec->name);
+ encode_lavc_printoptions(
+ &codec->priv_class, " --ovcopts=",
+ " ", NULL,
+ AV_OPT_FLAG_ENCODING_PARAM |
+ AV_OPT_FLAG_VIDEO_PARAM,
+ AV_OPT_FLAG_ENCODING_PARAM |
+ AV_OPT_FLAG_VIDEO_PARAM);
+ }
+ }
+ }
+ if (CHECKV(opts->encode_output.aopts)) {
+ AVCodecContext *c = avcodec_alloc_context3(NULL);
+ AVCodec *codec = NULL;
+ mp_msg(MSGT_ENCODE, MSGL_INFO,
+ "Available output audio codec ctx->options:\n");
+ encode_lavc_printoptions(
+ c, " --oacopts=", " ", NULL,
+ AV_OPT_FLAG_ENCODING_PARAM |
+ AV_OPT_FLAG_AUDIO_PARAM,
+ AV_OPT_FLAG_ENCODING_PARAM |
+ AV_OPT_FLAG_AUDIO_PARAM);
+ av_free(c);
+ while ((codec = av_codec_next(codec))) {
+ if (!av_codec_is_encoder(codec))
+ continue;
+ if (codec->type != AVMEDIA_TYPE_AUDIO)
+ continue;
+ if (opts->encode_output.acodec && opts->encode_output.acodec[0] &&
+ strcmp(opts->encode_output.acodec, codec->name) != 0)
+ continue;
+ if (codec->priv_class) {
+ mp_msg(MSGT_ENCODE, MSGL_INFO, "Additionally, for --oac=%s:\n",
+ codec->name);
+ encode_lavc_printoptions(
+ &codec->priv_class, " --oacopts=",
+ " ", NULL,
+ AV_OPT_FLAG_ENCODING_PARAM |
+ AV_OPT_FLAG_AUDIO_PARAM,
+ AV_OPT_FLAG_ENCODING_PARAM |
+