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mpv/libmpdemux/muxer_lavf.c

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <inttypes.h>
#include "config.h"
#include "../version.h"
#include "../mp_msg.h"
#include "bswap.h"
#include "aviheader.h"
#include "ms_hdr.h"
#include "muxer.h"
#include "stream.h"
#include "demuxer.h"
#include "stheader.h"
#include "../m_option.h"
#include "avformat.h"
extern unsigned int codec_get_wav_tag(int id);
extern enum CodecID codec_get_bmp_id(unsigned int tag);
extern enum CodecID codec_get_wav_id(unsigned int tag);
typedef struct {
//AVInputFormat *avif;
AVFormatContext *oc;
ByteIOContext pb;
int audio_streams;
int video_streams;
int64_t last_pts;
} muxer_priv_t;
typedef struct {
int64_t last_pts;
AVStream *avstream;
} muxer_stream_priv_t;
static char *conf_format = NULL;
m_option_t lavfopts_conf[] = {
{"format", &(conf_format), CONF_TYPE_STRING, 0, 0, 0, NULL},
{NULL, NULL, 0, 0, 0, 0, NULL}
};
static int mp_open(URLContext *h, const char *filename, int flags)
{
return 0;
}
static int mp_close(URLContext *h)
{
return 0;
}
static int mp_read(URLContext *h, unsigned char *buf, int size)
{
fprintf(stderr, "READ %d\n", size);
return -1;
}
static int mp_write(URLContext *h, unsigned char *buf, int size)
{
muxer_t *muxer = (muxer_t*)h->priv_data;
return fwrite(buf, 1, size, muxer->file);
}
static offset_t mp_seek(URLContext *h, offset_t pos, int whence)
{
muxer_t *muxer = (muxer_t*)h->priv_data;
fprintf(stderr, "SEEK %llu\n", pos);
return fseeko(muxer->file, pos, whence);
}
static URLProtocol mp_protocol = {
"menc",
mp_open,
mp_read,
mp_write,
mp_seek,
mp_close,
NULL
};
static muxer_stream_t* lavf_new_stream(muxer_t *muxer, int type)
{
muxer_priv_t *priv = (muxer_priv_t*) muxer->priv;
muxer_stream_t *stream;
muxer_stream_priv_t *spriv;
AVCodecContext *ctx;
if(!muxer || (type != MUXER_TYPE_VIDEO && type != MUXER_TYPE_AUDIO))
{
mp_msg(MSGT_MUXER, MSGL_ERR, "UNKNOW TYPE %d\n", type);
return NULL;
}
stream = (muxer_stream_t*) calloc(1, sizeof(muxer_stream_t));
if(!stream)
{
mp_msg(MSGT_MUXER, MSGL_ERR, "Could not alloc muxer_stream, EXIT\n");
return NULL;
}
stream->b_buffer = (unsigned char *)malloc(2048);
if(!stream->b_buffer)
{
mp_msg(MSGT_MUXER, MSGL_ERR, "Could not alloc b_buffer, EXIT\n");
free(stream);
return NULL;
}
stream->b_buffer_size = 2048;
stream->b_buffer_ptr = 0;
stream->b_buffer_len = 0;
spriv = (muxer_stream_priv_t*) calloc(1, sizeof(muxer_stream_priv_t));
if(!spriv)
{
free(stream);
return NULL;
}
stream->priv = spriv;
spriv->avstream = av_new_stream(priv->oc, 1);
if(!spriv->avstream)
{
mp_msg(MSGT_MUXER, MSGL_ERR, "Could not alloc avstream, EXIT\n");
return NULL;
}
spriv->avstream->stream_copy = 1;
ctx = &(spriv->avstream->codec);
ctx->codec_id = muxer->avih.dwStreams;
switch(type)
{
case MUXER_TYPE_VIDEO:
ctx->codec_type = CODEC_TYPE_VIDEO;
break;
case MUXER_TYPE_AUDIO:
ctx->codec_type = CODEC_TYPE_AUDIO;
break;
}
muxer->avih.dwStreams++;
stream->muxer = muxer;
stream->type = type;
mp_msg(MSGT_MUXER, MSGL_V, "ALLOCATED STREAM N. %d, type=%d\n", muxer->avih.dwStreams, type);
return stream;
}
static void fix_parameters(muxer_stream_t *stream)
{
muxer_stream_priv_t *spriv = (muxer_stream_priv_t *) stream->priv;
AVCodecContext *ctx;
ctx = &(spriv->avstream->codec);
if(stream->type == MUXER_TYPE_AUDIO)
{
ctx->codec_id = codec_get_wav_id(stream->wf->wFormatTag);
ctx->codec_tag = codec_get_wav_tag(ctx->codec_id);
mp_msg(MSGT_MUXER, MSGL_INFO, "AUDIO CODEC ID: %x, TAG: %x\n", ctx->codec_id, (uint32_t) ctx->codec_tag);
ctx->bit_rate = stream->wf->nAvgBytesPerSec * 8;
ctx->sample_rate = stream->wf->nSamplesPerSec;
// mp_msg(MSGT_MUXER, MSGL_INFO, "stream->h.dwSampleSize: %d\n", stream->h.dwSampleSize);
ctx->channels = stream->wf->nChannels;
if(stream->h.dwRate && (stream->h.dwScale * (int64_t)ctx->sample_rate) % stream->h.dwRate == 0)
ctx->frame_size= (stream->h.dwScale * (int64_t)ctx->sample_rate) / stream->h.dwRate;
mp_msg(MSGT_MUXER, MSGL_V, "MUXER_LAVF(audio stream) frame_size: %d, scale: %u, sps: %u, rate: %u, ctx->block_align = stream->wf->nBlockAlign; %d=%d stream->wf->nAvgBytesPerSec:%d\n",
ctx->frame_size, stream->h.dwScale, ctx->sample_rate, stream->h.dwRate,
ctx->block_align, stream->wf->nBlockAlign, stream->wf->nAvgBytesPerSec);
ctx->block_align = stream->wf->nBlockAlign;
}
else if(stream->type == MUXER_TYPE_VIDEO)
{
ctx->codec_id = codec_get_bmp_id(stream->bih->biCompression);
mp_msg(MSGT_MUXER, MSGL_INFO, "VIDEO CODEC ID: %d\n", ctx->codec_id);
ctx->width = stream->bih->biWidth;
ctx->height = stream->bih->biHeight;
ctx->bit_rate = 800000;
#if (LIBAVFORMAT_BUILD >= 4624)
ctx->time_base.den = stream->h.dwRate;
ctx->time_base.num = stream->h.dwScale;
#else
ctx->frame_rate = stream->h.dwRate;
ctx->frame_rate_base = stream->h.dwScale;
#endif
}
}
static void write_chunk(muxer_stream_t *stream, size_t len, unsigned int flags)
{
muxer_t *muxer = (muxer_t*) stream->muxer;
muxer_priv_t *priv = (muxer_priv_t *) muxer->priv;
muxer_stream_priv_t *spriv = (muxer_stream_priv_t *) stream->priv;
AVPacket pkt;
stream->size += len;
if(len)
{
av_init_packet(&pkt);
pkt.size = len;
pkt.stream_index= spriv->avstream->index;
pkt.data = stream->buffer;
if(flags & AVIIF_KEYFRAME)
pkt.flags |= PKT_FLAG_KEY;
else
pkt.flags = 0;
//pkt.pts = AV_NOPTS_VALUE;
pkt.pts = AV_TIME_BASE * stream->timer;
if(av_interleaved_write_frame(priv->oc, &pkt) != 0) //av_write_frame(priv->oc, &pkt)
{
mp_msg(MSGT_MUXER, MSGL_ERR, "Error while writing frame\n");
}
}
if(stream->h.dwSampleSize) // CBR
stream->h.dwLength += len / stream->h.dwSampleSize;
else // VBR
stream->h.dwLength++;
stream->timer = (double) stream->h.dwLength * stream->h.dwScale / stream->h.dwRate;
return;
}
static void write_header(muxer_t *muxer)
{
muxer_priv_t *priv = (muxer_priv_t *) muxer->priv;
av_write_header(priv->oc);
muxer->cont_write_header = NULL;
mp_msg(MSGT_MUXER, MSGL_INFO, "WRITTEN HEADER\n");
}
static void write_trailer(muxer_t *muxer)
{
int i;
muxer_priv_t *priv = (muxer_priv_t *) muxer->priv;
av_write_trailer(priv->oc);
mp_msg(MSGT_MUXER, MSGL_INFO, "WRITTEN TRAILER\n");
for(i = 0; i < priv->oc->nb_streams; i++)
{
av_freep(&(priv->oc->streams[i]));
}
url_fclose(&(priv->oc->pb));
av_free(priv->oc);
}
extern char *out_filename;
int muxer_init_muxer_lavf(muxer_t *muxer)
{
muxer_priv_t *priv;
AVOutputFormat *fmt = NULL;
char mp_filename[256] = "menc://stream.dummy";
priv = (muxer_priv_t *) calloc(1, sizeof(muxer_priv_t));
if(priv == NULL)
return 0;
av_register_all();
priv->oc = av_alloc_format_context();
if(!priv->oc)
{
mp_msg(MSGT_MUXER, MSGL_FATAL, "Couldn't get format context\n");
goto fail;
}
if(conf_format)
fmt = guess_format(conf_format, NULL, NULL);
if(! fmt)
fmt = guess_format(NULL, out_filename, NULL);
if(! fmt)
{
mp_msg(MSGT_MUXER, MSGL_FATAL, "CAN'T GET SPECIFIED FORMAT\n");
goto fail;
}
priv->oc->oformat = fmt;
if(av_set_parameters(priv->oc, NULL) < 0)
{
mp_msg(MSGT_MUXER, MSGL_FATAL, "Invalid output format parameters\n");
goto fail;
}
register_protocol(&mp_protocol);
if(url_fopen(&priv->oc->pb, mp_filename, URL_WRONLY))
{
mp_msg(MSGT_MUXER, MSGL_FATAL, "Coulnd't open outfile\n");
goto fail;
}
((URLContext*)(priv->oc->pb.opaque))->priv_data= muxer;
muxer->priv = (void *) priv;
muxer->cont_new_stream = &lavf_new_stream;
muxer->cont_write_chunk = &write_chunk;
muxer->cont_write_header = &write_header;
muxer->cont_write_index = &write_trailer;
muxer->fix_stream_parameters = &fix_parameters;
mp_msg(MSGT_MUXER, MSGL_INFO, "OK, exit\n");
return 1;
fail:
free(priv);
return 0;
}