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FFmpeg/ffmpeg.c
Philip Gladstone cb09b2ed92 * Go faster stripes: don't check to see if the user presses 'q' if stdin 
returns EOF -- e.g. it is connected to /dev/null
* Make the 1MB video buffer only allocated once rather than on each frame.
  The allocation and deallocation causes significant performance loss as the
  kernel remaps the address space each time.

Originally committed as revision 629 to svn://svn.ffmpeg.org/ffmpeg/trunk
2002-05-30 02:38:57 +00:00

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/*
* FFmpeg main
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define HAVE_AV_CONFIG_H
#include "avformat.h"
#include "tick.h"
#ifndef CONFIG_WIN32
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <termios.h>
#include <sys/resource.h>
#endif
#include <time.h>
#include <ctype.h>
#define MAXINT64 INT64_C(0x7fffffffffffffff)
typedef struct {
const char *name;
int flags;
#define HAS_ARG 0x0001
#define OPT_BOOL 0x0002
#define OPT_EXPERT 0x0004
#define OPT_STRING 0x0008
union {
void (*func_arg)();
int *int_arg;
char **str_arg;
} u;
const char *help;
const char *argname;
} OptionDef;
/* select an input stream for an output stream */
typedef struct AVStreamMap {
int file_index;
int stream_index;
} AVStreamMap;
extern const OptionDef options[];
void show_help(void);
#define MAX_FILES 20
static AVFormatContext *input_files[MAX_FILES];
static int nb_input_files = 0;
static AVFormatContext *output_files[MAX_FILES];
static int nb_output_files = 0;
static AVStreamMap stream_maps[MAX_FILES];
static int nb_stream_maps;
static AVInputFormat *file_iformat;
static AVOutputFormat *file_oformat;
static int frame_width = 160;
static int frame_height = 128;
static int frame_rate = 25 * FRAME_RATE_BASE;
static int video_bit_rate = 200000;
static int video_bit_rate_tolerance = 200000;
static int video_qscale = 0;
static int video_qmin = 3;
static int video_qmax = 15;
static int video_qdiff = 3;
static float video_qblur = 0.5;
static float video_qcomp = 0.5;
static int me_method = 0;
static int video_disable = 0;
static int video_codec_id = CODEC_ID_NONE;
static int same_quality = 0;
static int b_frames = 0;
static int use_hq = 0;
static int use_4mv = 0;
static int do_deinterlace = 0;
static int gop_size = 12;
static int intra_only = 0;
static int audio_sample_rate = 44100;
static int audio_bit_rate = 64000;
static int audio_disable = 0;
static int audio_channels = 1;
static int audio_codec_id = CODEC_ID_NONE;
static INT64 recording_time = 0;
static int file_overwrite = 0;
static char *str_title = NULL;
static char *str_author = NULL;
static char *str_copyright = NULL;
static char *str_comment = NULL;
static int do_benchmark = 0;
static int do_hex_dump = 0;
static int do_play = 0;
static int do_psnr = 0;
static int do_vstats = 0;
static int mpeg_vcd = 0;
#ifndef CONFIG_AUDIO_OSS
const char *audio_device = "none";
#endif
#ifndef CONFIG_VIDEO4LINUX
const char *v4l_device = "none";
#endif
typedef struct AVOutputStream {
int file_index; /* file index */
int index; /* stream index in the output file */
int source_index; /* AVInputStream index */
AVStream *st; /* stream in the output file */
int encoding_needed; /* true if encoding needed for this stream */
/* video only */
AVPicture pict_tmp; /* temporary image for resizing */
int video_resample;
ImgReSampleContext *img_resample_ctx; /* for image resampling */
/* audio only */
int audio_resample;
ReSampleContext *resample; /* for audio resampling */
FifoBuffer fifo; /* for compression: one audio fifo per codec */
} AVOutputStream;
typedef struct AVInputStream {
int file_index;
int index;
AVStream *st;
int discard; /* true if stream data should be discarded */
int decoding_needed; /* true if the packets must be decoded in 'raw_fifo' */
Ticker pts_ticker; /* Ticker for PTS calculation */
int ticker_inited; /* to signal if the ticker was initialized */
INT64 pts; /* current pts */
int pts_increment; /* expected pts increment for next packet */
int frame_number; /* current frame */
INT64 sample_index; /* current sample */
} AVInputStream;
typedef struct AVInputFile {
int eof_reached; /* true if eof reached */
int ist_index; /* index of first stream in ist_table */
int buffer_size; /* current total buffer size */
int buffer_size_max; /* buffer size at which we consider we can stop
buffering */
int nb_streams; /* nb streams we are aware of */
} AVInputFile;
#ifndef CONFIG_WIN32
/* init terminal so that we can grab keys */
static struct termios oldtty;
static void term_exit(void)
{
tcsetattr (0, TCSANOW, &oldtty);
}
static void term_init(void)
{
struct termios tty;
tcgetattr (0, &tty);
oldtty = tty;
tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
|INLCR|IGNCR|ICRNL|IXON);
tty.c_oflag |= OPOST;
tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
tty.c_cflag &= ~(CSIZE|PARENB);
tty.c_cflag |= CS8;
tty.c_cc[VMIN] = 1;
tty.c_cc[VTIME] = 0;
tcsetattr (0, TCSANOW, &tty);
atexit(term_exit);
}
/* read a key without blocking */
static int read_key(void)
{
struct timeval tv;
int n;
unsigned char ch;
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(0, &rfds);
tv.tv_sec = 0;
tv.tv_usec = 0;
n = select(1, &rfds, NULL, NULL, &tv);
if (n > 0) {
n = read(0, &ch, 1);
if (n == 1)
return ch;
return n;
}
return -1;
}
#else
/* no interactive support */
static void term_exit(void)
{
}
static void term_init(void)
{
}
static int read_key(void)
{
return 0;
}
#endif
int read_ffserver_streams(AVFormatContext *s, const char *filename)
{
int i, err;
AVFormatContext *ic;
err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
if (err < 0)
return err;
/* copy stream format */
s->nb_streams = ic->nb_streams;
for(i=0;i<ic->nb_streams;i++) {
AVStream *st;
st = av_mallocz(sizeof(AVFormatContext));
memcpy(st, ic->streams[i], sizeof(AVStream));
s->streams[i] = st;
}
av_close_input_file(ic);
return 0;
}
#define MAX_AUDIO_PACKET_SIZE 16384
static void do_audio_out(AVFormatContext *s,
AVOutputStream *ost,
AVInputStream *ist,
unsigned char *buf, int size)
{
UINT8 *buftmp;
UINT8 audio_buf[2*MAX_AUDIO_PACKET_SIZE]; /* XXX: allocate it */
UINT8 audio_out[MAX_AUDIO_PACKET_SIZE]; /* XXX: allocate it */
int size_out, frame_bytes, ret;
AVCodecContext *enc;
enc = &ost->st->codec;
if (ost->audio_resample) {
buftmp = audio_buf;
size_out = audio_resample(ost->resample,
(short *)buftmp, (short *)buf,
size / (ist->st->codec.channels * 2));
size_out = size_out * enc->channels * 2;
} else {
buftmp = buf;
size_out = size;
}
/* now encode as many frames as possible */
if (enc->frame_size > 1) {
/* output resampled raw samples */
fifo_write(&ost->fifo, buftmp, size_out,
&ost->fifo.wptr);
frame_bytes = enc->frame_size * 2 * enc->channels;
while (fifo_read(&ost->fifo, audio_buf, frame_bytes,
&ost->fifo.rptr) == 0) {
ret = avcodec_encode_audio(enc, audio_out, sizeof(audio_out),
(short *)audio_buf);
s->oformat->write_packet(s, ost->index, audio_out, ret, 0);
}
} else {
/* output a pcm frame */
/* XXX: change encoding codec API to avoid this ? */
switch(enc->codec->id) {
case CODEC_ID_PCM_S16LE:
case CODEC_ID_PCM_S16BE:
case CODEC_ID_PCM_U16LE:
case CODEC_ID_PCM_U16BE:
break;
default:
size_out = size_out >> 1;
break;
}
ret = avcodec_encode_audio(enc, audio_out, size_out,
(short *)buftmp);
s->oformat->write_packet(s, ost->index, audio_out, ret, 0);
}
}
/* write a picture to a raw mux */
static void write_picture(AVFormatContext *s, int index, AVPicture *picture,
int pix_fmt, int w, int h)
{
UINT8 *buf, *src, *dest;
int size, j, i;
/* XXX: not efficient, should add test if we can take
directly the AVPicture */
switch(pix_fmt) {
case PIX_FMT_YUV420P:
size = avpicture_get_size(pix_fmt, w, h);
buf = av_malloc(size);
if (!buf)
return;
dest = buf;
for(i=0;i<3;i++) {
if (i == 1) {
w >>= 1;
h >>= 1;
}
src = picture->data[i];
for(j=0;j<h;j++) {
memcpy(dest, src, w);
dest += w;
src += picture->linesize[i];
}
}
break;
case PIX_FMT_YUV422P:
size = (w * h) * 2;
buf = av_malloc(size);
if (!buf)
return;
dest = buf;
for(i=0;i<3;i++) {
if (i == 1) {
w >>= 1;
}
src = picture->data[i];
for(j=0;j<h;j++) {
memcpy(dest, src, w);
dest += w;
src += picture->linesize[i];
}
}
break;
case PIX_FMT_YUV444P:
size = (w * h) * 3;
buf = av_malloc(size);
if (!buf)
return;
dest = buf;
for(i=0;i<3;i++) {
src = picture->data[i];
for(j=0;j<h;j++) {
memcpy(dest, src, w);
dest += w;
src += picture->linesize[i];
}
}
break;
case PIX_FMT_YUV422:
size = (w * h) * 2;
buf = av_malloc(size);
if (!buf)
return;
dest = buf;
src = picture->data[0];
for(j=0;j<h;j++) {
memcpy(dest, src, w * 2);
dest += w * 2;
src += picture->linesize[0];
}
break;
case PIX_FMT_RGB24:
case PIX_FMT_BGR24:
size = (w * h) * 3;
buf = av_malloc(size);
if (!buf)
return;
dest = buf;
src = picture->data[0];
for(j=0;j<h;j++) {
memcpy(dest, src, w * 3);
dest += w * 3;
src += picture->linesize[0];
}
break;
default:
return;
}
s->oformat->write_packet(s, index, buf, size, 0);
av_free(buf);
}
static void do_video_out(AVFormatContext *s,
AVOutputStream *ost,
AVInputStream *ist,
AVPicture *picture1,
int *frame_size)
{
int n1, n2, nb, i, ret, frame_number, dec_frame_rate;
AVPicture *picture, *picture2, *pict;
AVPicture picture_tmp1, picture_tmp2;
static UINT8 *video_buffer;
UINT8 *buf = NULL, *buf1 = NULL;
AVCodecContext *enc, *dec;
#define VIDEO_BUFFER_SIZE (1024*1024)
enc = &ost->st->codec;
dec = &ist->st->codec;
frame_number = ist->frame_number;
dec_frame_rate = ist->st->r_frame_rate;
// fprintf(stderr, "\n%d", dec_frame_rate);
/* first drop frame if needed */
n1 = ((INT64)frame_number * enc->frame_rate) / dec_frame_rate;
n2 = (((INT64)frame_number + 1) * enc->frame_rate) / dec_frame_rate;
nb = n2 - n1;
if (nb <= 0)
return;
if (!video_buffer)
video_buffer= av_malloc(VIDEO_BUFFER_SIZE);
if(!video_buffer) return;
/* deinterlace : must be done before any resize */
if (do_deinterlace) {
int size;
/* create temporary picture */
size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
buf1 = av_malloc(size);
if (!buf1)
return;
picture2 = &picture_tmp2;
avpicture_fill(picture2, buf1, dec->pix_fmt, dec->width, dec->height);
if (avpicture_deinterlace(picture2, picture1,
dec->pix_fmt, dec->width, dec->height) < 0) {
/* if error, do not deinterlace */
av_free(buf1);
buf1 = NULL;
picture2 = picture1;
}
} else {
picture2 = picture1;
}
/* convert pixel format if needed */
if (enc->pix_fmt != dec->pix_fmt) {
int size;
/* create temporary picture */
size = avpicture_get_size(enc->pix_fmt, dec->width, dec->height);
buf = av_malloc(size);
if (!buf)
return;
pict = &picture_tmp1;
avpicture_fill(pict, buf, enc->pix_fmt, dec->width, dec->height);
if (img_convert(pict, enc->pix_fmt,
picture2, dec->pix_fmt,
dec->width, dec->height) < 0) {
fprintf(stderr, "pixel format conversion not handled\n");
goto the_end;
}
} else {
pict = picture2;
}
/* XXX: resampling could be done before raw format convertion in
some cases to go faster */
/* XXX: only works for YUV420P */
if (ost->video_resample) {
picture = &ost->pict_tmp;
img_resample(ost->img_resample_ctx, picture, pict);
} else {
picture = pict;
}
nb=1;
/* duplicates frame if needed */
/* XXX: pb because no interleaving */
for(i=0;i<nb;i++) {
if (enc->codec_id != CODEC_ID_RAWVIDEO) {
/* handles sameq here. This is not correct because it may
not be a global option */
if (same_quality) {
enc->quality = dec->quality;
}
ret = avcodec_encode_video(enc,
video_buffer, VIDEO_BUFFER_SIZE,
picture);
//enc->frame_number = enc->real_pict_num;
s->oformat->write_packet(s, ost->index, video_buffer, ret, 0);
*frame_size = ret;
//fprintf(stderr,"\nFrame: %3d %3d size: %5d type: %d",
// enc->frame_number-1, enc->real_pict_num, ret,
// enc->pict_type);
} else {
write_picture(s, ost->index, picture, enc->pix_fmt, enc->width, enc->height);
}
}
the_end:
av_free(buf);
av_free(buf1);
}
static void do_video_stats(AVOutputStream *ost,
AVInputStream *ist,
int frame_size)
{
static FILE *fvstats=NULL;
static INT64 total_size = 0;
char filename[40];
time_t today2;
struct tm *today;
AVCodecContext *enc;
int frame_number;
INT64 ti;
double ti1, bitrate, avg_bitrate;
if (!fvstats) {
today2 = time(NULL);
today = localtime(&today2);
sprintf(filename, "vstats_%02d%02d%02d.log", today->tm_hour,
today->tm_min,
today->tm_sec);
fvstats = fopen(filename,"w");
if (!fvstats) {
perror("fopen");
exit(1);
}
}
ti = MAXINT64;
enc = &ost->st->codec;
total_size += frame_size;
if (enc->codec_type == CODEC_TYPE_VIDEO) {
frame_number = ist->frame_number;
fprintf(fvstats, "frame= %5d q= %2d ", frame_number, enc->quality);
if (do_psnr)
fprintf(fvstats, "PSNR= %6.2f ", enc->psnr_y);
fprintf(fvstats,"f_size= %6d ", frame_size);
/* compute min pts value */
if (!ist->discard && ist->pts < ti) {
ti = ist->pts;
}
ti1 = (double)ti / 1000000.0;
if (ti1 < 0.01)
ti1 = 0.01;
bitrate = (double)(frame_size * 8) * enc->frame_rate / FRAME_RATE_BASE / 1000.0;
avg_bitrate = (double)(total_size * 8) / ti1 / 1000.0;
fprintf(fvstats, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
(double)total_size / 1024, ti1, bitrate, avg_bitrate);
fprintf(fvstats,"type= %s\n", enc->key_frame == 1 ? "I" : "P");
}
}
/*
* The following code is the main loop of the file converter
*/
static int av_encode(AVFormatContext **output_files,
int nb_output_files,
AVFormatContext **input_files,
int nb_input_files,
AVStreamMap *stream_maps, int nb_stream_maps)
{
int ret, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
AVFormatContext *is, *os;
AVCodecContext *codec, *icodec;
AVOutputStream *ost, **ost_table = NULL;
AVInputStream *ist, **ist_table = NULL;
INT64 min_pts, start_time;
AVInputFile *file_table;
AVFormatContext *stream_no_data;
int key;
file_table= (AVInputFile*) av_mallocz(nb_input_files * sizeof(AVInputFile));
if (!file_table)
goto fail;
/* input stream init */
j = 0;
for(i=0;i<nb_input_files;i++) {
is = input_files[i];
file_table[i].ist_index = j;
file_table[i].nb_streams = is->nb_streams;
j += is->nb_streams;
}
nb_istreams = j;
ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
if (!ist_table)
goto fail;
for(i=0;i<nb_istreams;i++) {
ist = av_mallocz(sizeof(AVInputStream));
if (!ist)
goto fail;
ist_table[i] = ist;
}
j = 0;
for(i=0;i<nb_input_files;i++) {
is = input_files[i];
for(k=0;k<is->nb_streams;k++) {
ist = ist_table[j++];
ist->st = is->streams[k];
ist->file_index = i;
ist->index = k;
ist->discard = 1; /* the stream is discarded by default
(changed later) */
}
}
/* output stream init */
nb_ostreams = 0;
for(i=0;i<nb_output_files;i++) {
os = output_files[i];
nb_ostreams += os->nb_streams;
if (mpeg_vcd)
os->flags |= AVF_FLAG_VCD;
}
if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
fprintf(stderr, "Number of stream maps must match number of output streams\n");
exit(1);
}
ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
if (!ost_table)
goto fail;
for(i=0;i<nb_ostreams;i++) {
ost = av_mallocz(sizeof(AVOutputStream));
if (!ost)
goto fail;
ost_table[i] = ost;
}
n = 0;
for(k=0;k<nb_output_files;k++) {
os = output_files[k];
for(i=0;i<os->nb_streams;i++) {
int found;
ost = ost_table[n++];
ost->file_index = k;
ost->index = i;
ost->st = os->streams[i];
if (nb_stream_maps > 0) {
ost->source_index = file_table[stream_maps[n-1].file_index].ist_index +
stream_maps[n-1].stream_index;
} else {
/* get corresponding input stream index : we select the first one with the right type */
found = 0;
for(j=0;j<nb_istreams;j++) {
ist = ist_table[j];
if (ist->discard &&
ist->st->codec.codec_type == ost->st->codec.codec_type) {
ost->source_index = j;
found = 1;
}
}
if (!found) {
/* try again and reuse existing stream */
for(j=0;j<nb_istreams;j++) {
ist = ist_table[j];
if (ist->st->codec.codec_type == ost->st->codec.codec_type) {
ost->source_index = j;
found = 1;
}
}
if (!found) {
fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
ost->file_index, ost->index);
exit(1);
}
}
}
ist = ist_table[ost->source_index];
ist->discard = 0;
}
}
/* dump the stream mapping */
fprintf(stderr, "Stream mapping:\n");
for(i=0;i<nb_ostreams;i++) {
ost = ost_table[i];
fprintf(stderr, " Stream #%d.%d -> #%d.%d\n",
ist_table[ost->source_index]->file_index,
ist_table[ost->source_index]->index,
ost->file_index,
ost->index);
}
/* for each output stream, we compute the right encoding parameters */
for(i=0;i<nb_ostreams;i++) {
ost = ost_table[i];
ist = ist_table[ost->source_index];
codec = &ost->st->codec;
icodec = &ist->st->codec;
switch(codec->codec_type) {
case CODEC_TYPE_AUDIO:
/* check if same codec with same parameters. If so, no
reencoding is needed */
if (codec->codec_id == icodec->codec_id &&
codec->bit_rate == icodec->bit_rate &&
codec->sample_rate == icodec->sample_rate &&
codec->channels == icodec->channels) {
/* no reencoding */
/* use the same frame size */
codec->frame_size = icodec->frame_size;
//codec->frame_size = 8*icodec->sample_rate*icodec->frame_size/
// icodec->bit_rate;
//fprintf(stderr,"\nFrame size: %d", codec->frame_size);
} else {
if (fifo_init(&ost->fifo, 2 * MAX_AUDIO_PACKET_SIZE))
goto fail;
if (codec->channels == icodec->channels &&
codec->sample_rate == icodec->sample_rate) {
ost->audio_resample = 0;
} else {
if (codec->channels != icodec->channels &&
icodec->codec_id == CODEC_ID_AC3) {
/* Special case for 5:1 AC3 input */
/* and mono or stereo output */
/* Request specific number of channels */
icodec->channels = codec->channels;
if (codec->sample_rate == icodec->sample_rate)
ost->audio_resample = 0;
else {
ost->audio_resample = 1;
ost->resample = audio_resample_init(codec->channels, icodec->channels,
codec->sample_rate,
icodec->sample_rate);
}
/* Request specific number of channels */
icodec->channels = codec->channels;
} else {
ost->audio_resample = 1;
ost->resample = audio_resample_init(codec->channels, icodec->channels,
codec->sample_rate,
icodec->sample_rate);
}
}
ist->decoding_needed = 1;
ost->encoding_needed = 1;
}
break;
case CODEC_TYPE_VIDEO:
/* check if same codec with same parameters. If so, no
reencoding is needed */
if (codec->codec_id == icodec->codec_id &&
codec->bit_rate == icodec->bit_rate &&
codec->frame_rate == icodec->frame_rate &&
codec->width == icodec->width &&
codec->height == icodec->height) {
/* no reencoding */
} else {
if (codec->width == icodec->width &&
codec->height == icodec->height) {
ost->video_resample = 0;
} else {
UINT8 *buf;
ost->video_resample = 1;
buf = av_malloc((codec->width * codec->height * 3) / 2);
if (!buf)
goto fail;
ost->pict_tmp.data[0] = buf;
ost->pict_tmp.data[1] = ost->pict_tmp.data[0] + (codec->width * codec->height);
ost->pict_tmp.data[2] = ost->pict_tmp.data[1] + (codec->width * codec->height) / 4;
ost->pict_tmp.linesize[0] = codec->width;
ost->pict_tmp.linesize[1] = codec->width / 2;
ost->pict_tmp.linesize[2] = codec->width / 2;
ost->img_resample_ctx = img_resample_init(
ost->st->codec.width, ost->st->codec.height,
ist->st->codec.width, ist->st->codec.height);
}
ost->encoding_needed = 1;
ist->decoding_needed = 1;
}
break;
default:
av_abort();
}
}
/* open each encoder */
for(i=0;i<nb_ostreams;i++) {
ost = ost_table[i];
if (ost->encoding_needed) {
AVCodec *codec;
codec = avcodec_find_encoder(ost->st->codec.codec_id);
if (!codec) {
fprintf(stderr, "Unsupported codec for output stream #%d.%d\n",
ost->file_index, ost->index);
exit(1);
}
if (avcodec_open(&ost->st->codec, codec) < 0) {
fprintf(stderr, "Error while opening codec for stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height\n",
ost->file_index, ost->index);
exit(1);
}
}
}
/* open each decoder */
for(i=0;i<nb_istreams;i++) {
ist = ist_table[i];
if (ist->decoding_needed) {
AVCodec *codec;
codec = avcodec_find_decoder(ist->st->codec.codec_id);
if (!codec) {
fprintf(stderr, "Unsupported codec for input stream #%d.%d\n",
ist->file_index, ist->index);
exit(1);
}
if (avcodec_open(&ist->st->codec, codec) < 0) {
fprintf(stderr, "Error while opening codec for input stream #%d.%d\n",
ist->file_index, ist->index);
exit(1);
}
//if (ist->st->codec.codec_type == CODEC_TYPE_VIDEO)
// ist->st->codec.flags |= CODEC_FLAG_REPEAT_FIELD;
}
}
/* init pts */
for(i=0;i<nb_istreams;i++) {
ist = ist_table[i];
ist->pts = 0;
ist->frame_number = 0;
}
/* compute buffer size max (should use a complete heuristic) */
for(i=0;i<nb_input_files;i++) {
file_table[i].buffer_size_max = 2048;
}
/* open files and write file headers */
for(i=0;i<nb_output_files;i++) {
os = output_files[i];
if (av_write_header(os) < 0) {
fprintf(stderr, "Could not write header for output file #%d (incorrect codec paramters ?)\n", i);
ret = -EINVAL;
goto fail;
}
}
#ifndef CONFIG_WIN32
if (!do_play) {
fprintf(stderr, "Press [q] to stop encoding\n");
} else {
fprintf(stderr, "Press [q] to stop playing\n");
}
#endif
term_init();
start_time = gettime();
min_pts = 0;
stream_no_data = 0;
key = -1;
for(;;) {
int file_index, ist_index;
AVPacket pkt;
UINT8 *ptr;
int len;
UINT8 *data_buf;
int data_size, got_picture;
AVPicture picture;
short samples[AVCODEC_MAX_AUDIO_FRAME_SIZE / 2];
redo:
/* if 'q' pressed, exits */
if (key) {
/* read_key() returns 0 on EOF */
key = read_key();
if (key == 'q')
break;
}
/* select the input file with the smallest pts */
file_index = -1;
min_pts = MAXINT64;
for(i=0;i<nb_istreams;i++) {
ist = ist_table[i];
/* For some reason, the pts_increment code breaks q estimation?!? */
if (!ist->discard && !file_table[ist->file_index].eof_reached &&
ist->pts /* + ist->pts_increment */ < min_pts && input_files[ist->file_index] != stream_no_data) {
min_pts = ist->pts /* + ist->pts_increment */;
file_index = ist->file_index;
}
}
/* if none, if is finished */
if (file_index < 0) {
if (stream_no_data) {
#ifndef CONFIG_WIN32
struct timespec ts;
ts.tv_sec = 0;
ts.tv_nsec = 1000 * 1000 * 10;
nanosleep(&ts, 0);
#endif
stream_no_data = 0;
continue;
}
break;
}
/* finish if recording time exhausted */
if (recording_time > 0 && min_pts >= recording_time)
break;
/* read a packet from it and output it in the fifo */
is = input_files[file_index];
if (av_read_packet(is, &pkt) < 0) {
file_table[file_index].eof_reached = 1;
continue;
}
if (!pkt.size) {
stream_no_data = is;
} else {
stream_no_data = 0;
}
/* the following test is needed in case new streams appear
dynamically in stream : we ignore them */
if (pkt.stream_index >= file_table[file_index].nb_streams)
goto discard_packet;
ist_index = file_table[file_index].ist_index + pkt.stream_index;
ist = ist_table[ist_index];
if (ist->discard)
goto discard_packet;
if (pkt.flags & PKT_FLAG_DROPPED_FRAME)
ist->frame_number++;
if (do_hex_dump) {
printf("stream #%d, size=%d:\n", pkt.stream_index, pkt.size);
av_hex_dump(pkt.data, pkt.size);
}
// printf("read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
len = pkt.size;
ptr = pkt.data;
while (len > 0) {
/* decode the packet if needed */
data_buf = NULL; /* fail safe */
data_size = 0;
if (ist->decoding_needed) {
switch(ist->st->codec.codec_type) {
case CODEC_TYPE_AUDIO:
/* XXX: could avoid copy if PCM 16 bits with same
endianness as CPU */
ret = avcodec_decode_audio(&ist->st->codec, samples, &data_size,
ptr, len);
if (ret < 0)
goto fail_decode;
/* Some bug in mpeg audio decoder gives */
/* data_size < 0, it seems they are overflows */
if (data_size <= 0) {
/* no audio frame */
ptr += ret;
len -= ret;
continue;
}
data_buf = (UINT8 *)samples;
break;
case CODEC_TYPE_VIDEO:
if (ist->st->codec.codec_id == CODEC_ID_RAWVIDEO) {
int size;
size = (ist->st->codec.width * ist->st->codec.height);
avpicture_fill(&picture, ptr,
ist->st->codec.pix_fmt,
ist->st->codec.width,
ist->st->codec.height);
ret = len;
} else {
data_size = (ist->st->codec.width * ist->st->codec.height * 3) / 2;
ret = avcodec_decode_video(&ist->st->codec,
&picture, &got_picture, ptr, len);
if (ret < 0) {
fail_decode:
fprintf(stderr, "Error while decoding stream #%d.%d\n",
ist->file_index, ist->index);
av_free_packet(&pkt);
goto redo;
}
if (!got_picture) {
/* no picture yet */
ptr += ret;
len -= ret;
continue;
}
}
break;
default:
goto fail_decode;
}
} else {
data_buf = ptr;
data_size = len;
ret = len;
}
/* init tickers */
if (!ist->ticker_inited) {
switch (ist->st->codec.codec_type) {
case CODEC_TYPE_AUDIO:
ticker_init(&ist->pts_ticker,
(INT64)ist->st->codec.sample_rate,
(INT64)(1000000));
ist->ticker_inited = 1;
break;
case CODEC_TYPE_VIDEO:
ticker_init(&ist->pts_ticker,
(INT64)ist->st->r_frame_rate,
((INT64)1000000 * FRAME_RATE_BASE));
ist->ticker_inited = 1;
break;
default:
av_abort();
}
}
/* update pts */
switch(ist->st->codec.codec_type) {
case CODEC_TYPE_AUDIO:
//ist->pts = (INT64)1000000 * ist->sample_index / ist->st->codec.sample_rate;
ist->pts = ticker_tick(&ist->pts_ticker, ist->sample_index);
ist->sample_index += data_size / (2 * ist->st->codec.channels);
ist->pts_increment = (INT64) (data_size / (2 * ist->st->codec.channels)) * 1000000 / ist->st->codec.sample_rate;
break;
case CODEC_TYPE_VIDEO:
ist->frame_number++;
//ist->pts = ((INT64)ist->frame_number * 1000000 * FRAME_RATE_BASE) /
// ist->st->codec.frame_rate;
ist->pts = ticker_tick(&ist->pts_ticker, ist->frame_number);
ist->pts_increment = ((INT64) 1000000 * FRAME_RATE_BASE) /
ist->st->codec.frame_rate;
break;
default:
av_abort();
}
ptr += ret;
len -= ret;
/* transcode raw format, encode packets and output them */
for(i=0;i<nb_ostreams;i++) {
int frame_size;
ost = ost_table[i];
if (ost->source_index == ist_index) {
os = output_files[ost->file_index];
if (ost->encoding_needed) {
switch(ost->st->codec.codec_type) {
case CODEC_TYPE_AUDIO:
do_audio_out(os, ost, ist, data_buf, data_size);
break;
case CODEC_TYPE_VIDEO:
do_video_out(os, ost, ist, &picture, &frame_size);
if (do_vstats)
do_video_stats(ost, ist, frame_size);
break;
default:
av_abort();
}
} else {
/* no reencoding needed : output the packet directly */
/* force the input stream PTS */
os->oformat->write_packet(os, ost->index, data_buf, data_size, pkt.pts);
}
}
}
}
discard_packet:
av_free_packet(&pkt);
/* dump report by using the first video and audio streams */
{
char buf[1024];
AVFormatContext *oc;
INT64 total_size, ti;
AVCodecContext *enc;
int frame_number, vid;
double bitrate, ti1;
static INT64 last_time;
if ((min_pts - last_time) >= 500000) {
last_time = min_pts;
oc = output_files[0];
total_size = url_ftell(&oc->pb);
buf[0] = '\0';
ti = MAXINT64;
vid = 0;
for(i=0;i<nb_ostreams;i++) {
ost = ost_table[i];
enc = &ost->st->codec;
ist = ist_table[ost->source_index];
if (!vid && enc->codec_type == CODEC_TYPE_VIDEO) {
frame_number = ist->frame_number;
sprintf(buf + strlen(buf), "frame=%5d q=%2d ",
frame_number, enc->quality);
if (do_psnr)
sprintf(buf + strlen(buf), "PSNR=%6.2f ", enc->psnr_y);
vid = 1;
}
/* compute min pts value */
if (!ist->discard && ist->pts < ti) {
ti = ist->pts;
}
}
ti1 = (double)ti / 1000000.0;
if (ti1 < 0.01)
ti1 = 0.01;
bitrate = (double)(total_size * 8) / ti1 / 1000.0;
sprintf(buf + strlen(buf),
"size=%8.0fkB time=%0.1f bitrate=%6.1fkbits/s",
(double)total_size / 1024, ti1, bitrate);
fprintf(stderr, "%s \r", buf);
fflush(stderr);
}
}
}
term_exit();
/* dump report by using the first video and audio streams */
{
char buf[1024];
AVFormatContext *oc;
INT64 total_size, ti;
AVCodecContext *enc;
int frame_number, vid;
double bitrate, ti1;
oc = output_files[0];
total_size = url_ftell(&oc->pb);
buf[0] = '\0';
ti = MAXINT64;
vid = 0;
for(i=0;i<nb_ostreams;i++) {
ost = ost_table[i];
enc = &ost->st->codec;
ist = ist_table[ost->source_index];
if (!vid && enc->codec_type == CODEC_TYPE_VIDEO) {
frame_number = ist->frame_number;
sprintf(buf + strlen(buf), "frame=%5d q=%2d ",
frame_number, enc->quality);
if (do_psnr)
sprintf(buf + strlen(buf), "PSNR=%6.2f ", enc->psnr_y);
vid = 1;
}
/* compute min pts value */
if (!ist->discard && ist->pts < ti) {
ti = ist->pts;
}
}
ti1 = ti / 1000000.0;
if (ti1 < 0.01)
ti1 = 0.01;
bitrate = (double)(total_size * 8) / ti1 / 1000.0;
sprintf(buf + strlen(buf),
"size=%8.0fkB time=%0.1f bitrate=%6.1fkbits/s",
(double)total_size / 1024, ti1, bitrate);
fprintf(stderr, "%s \n", buf);
}
/* close each encoder */
for(i=0;i<nb_ostreams;i++) {
ost = ost_table[i];
if (ost->encoding_needed) {
avcodec_close(&ost->st->codec);
}
}
/* close each decoder */
for(i=0;i<nb_istreams;i++) {
ist = ist_table[i];
if (ist->decoding_needed) {
avcodec_close(&ist->st->codec);
}
}
/* write the trailer if needed and close file */
for(i=0;i<nb_output_files;i++) {
os = output_files[i];
av_write_trailer(os);
}
/* finished ! */
ret = 0;
fail1:
av_free(file_table);
if (ist_table) {
for(i=0;i<nb_istreams;i++) {
ist = ist_table[i];
av_free(ist);
}
av_free(ist_table);
}
if (ost_table) {
for(i=0;i<nb_ostreams;i++) {
ost = ost_table[i];
if (ost) {
fifo_free(&ost->fifo); /* works even if fifo is not
initialized but set to zero */
av_free(ost->pict_tmp.data[0]);
if (ost->video_resample)
img_resample_close(ost->img_resample_ctx);
if (ost->audio_resample)
audio_resample_close(ost->resample);
av_free(ost);
}
}
av_free(ost_table);
}
return ret;
fail:
ret = -ENOMEM;
goto fail1;
}
#if 0
int file_read(const char *filename)
{
URLContext *h;
unsigned char buffer[1024];
int len, i;
if (url_open(&h, filename, O_RDONLY) < 0) {
printf("could not open '%s'\n", filename);
return -1;
}
for(;;) {
len = url_read(h, buffer, sizeof(buffer));
if (len <= 0)
break;
for(i=0;i<len;i++) putchar(buffer[i]);
}
url_close(h);
return 0;
}
#endif
void show_licence(void)
{
printf(
"ffmpeg version " FFMPEG_VERSION "\n"
"Copyright (c) 2000, 2001, 2002 Fabrice Bellard\n"
"This library is free software; you can redistribute it and/or\n"
"modify it under the terms of the GNU Lesser General Public\n"
"License as published by the Free Software Foundation; either\n"
"version 2 of the License, or (at your option) any later version.\n"
"\n"
"This library is distributed in the hope that it will be useful,\n"
"but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
"Lesser General Public License for more details.\n"
"\n"
"You should have received a copy of the GNU Lesser General Public\n"
"License along with this library; if not, write to the Free Software\n"
"Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\n"
);
exit(1);
}
void opt_format(const char *arg)
{
file_iformat = av_find_input_format(arg);
file_oformat = guess_format(arg, NULL, NULL);
if (!file_iformat && !file_oformat) {
fprintf(stderr, "Unknown input or output format: %s\n", arg);
exit(1);
}
}
void opt_video_bitrate(const char *arg)
{
video_bit_rate = atoi(arg) * 1000;
}
void opt_video_bitrate_tolerance(const char *arg)
{
video_bit_rate_tolerance = atoi(arg) * 1000;
}
void opt_frame_rate(const char *arg)
{
frame_rate = (int)(strtod(arg, 0) * FRAME_RATE_BASE);
}
void opt_frame_size(const char *arg)
{
parse_image_size(&frame_width, &frame_height, arg);
if (frame_width <= 0 || frame_height <= 0) {
fprintf(stderr, "Incorrect frame size\n");
exit(1);
}
if ((frame_width % 2) != 0 || (frame_height % 2) != 0) {
fprintf(stderr, "Frame size must be a multiple of 2\n");
exit(1);
}
}
void opt_gop_size(const char *arg)
{
gop_size = atoi(arg);
}
void opt_b_frames(const char *arg)
{
b_frames = atoi(arg);
if (b_frames > FF_MAX_B_FRAMES) {
fprintf(stderr, "\nCannot have more than %d B frames, increase FF_MAX_B_FRAMES.\n", FF_MAX_B_FRAMES);
exit(1);
} else if (b_frames < 1) {
fprintf(stderr, "\nNumber of B frames must be higher than 0\n");
exit(1);
}
}
void opt_qscale(const char *arg)
{
video_qscale = atoi(arg);
if (video_qscale < 0 ||
video_qscale > 31) {
fprintf(stderr, "qscale must be >= 1 and <= 31\n");
exit(1);
}
}
void opt_qmin(const char *arg)
{
video_qmin = atoi(arg);
if (video_qmin < 0 ||
video_qmin > 31) {
fprintf(stderr, "qmin must be >= 1 and <= 31\n");
exit(1);
}
}
void opt_qmax(const char *arg)
{
video_qmax = atoi(arg);
if (video_qmax < 0 ||
video_qmax > 31) {
fprintf(stderr, "qmax must be >= 1 and <= 31\n");
exit(1);
}
}
void opt_qdiff(const char *arg)
{
video_qdiff = atoi(arg);
if (video_qdiff < 0 ||
video_qdiff > 31) {
fprintf(stderr, "qdiff must be >= 1 and <= 31\n");
exit(1);
}
}
void opt_qblur(const char *arg)
{
video_qblur = atof(arg);
}
void opt_qcomp(const char *arg)
{
video_qcomp = atof(arg);
}
void opt_audio_bitrate(const char *arg)
{
audio_bit_rate = atoi(arg) * 1000;
}
void opt_audio_rate(const char *arg)
{
audio_sample_rate = atoi(arg);
}
void opt_audio_channels(const char *arg)
{
audio_channels = atoi(arg);
}
void opt_video_device(const char *arg)
{
v4l_device = strdup(arg);
}
void opt_audio_device(const char *arg)
{
audio_device = strdup(arg);
}
void opt_audio_codec(const char *arg)
{
AVCodec *p;
p = first_avcodec;
while (p) {
if (!strcmp(p->name, arg) && p->type == CODEC_TYPE_AUDIO)
break;
p = p->next;
}
if (p == NULL) {
fprintf(stderr, "Unknown audio codec '%s'\n", arg);
exit(1);
} else {
audio_codec_id = p->id;
}
}
const char *motion_str[] = {
"zero",
"full",
"log",
"phods",
"epzs",
"x1",
NULL,
};
void opt_motion_estimation(const char *arg)
{
const char **p;
p = motion_str;
for(;;) {
if (!*p) {
fprintf(stderr, "Unknown motion estimation method '%s'\n", arg);
exit(1);
}
if (!strcmp(*p, arg))
break;
p++;
}
me_method = (p - motion_str) + 1;
}
void opt_video_codec(const char *arg)
{
AVCodec *p;
p = first_avcodec;
while (p) {
if (!strcmp(p->name, arg) && p->type == CODEC_TYPE_VIDEO)
break;
p = p->next;
}
if (p == NULL) {
fprintf(stderr, "Unknown video codec '%s'\n", arg);
exit(1);
} else {
video_codec_id = p->id;
}
}
void opt_map(const char *arg)
{
AVStreamMap *m;
const char *p;
p = arg;
m = &stream_maps[nb_stream_maps++];
m->file_index = strtol(arg, (char **)&p, 0);
if (*p)
p++;
m->stream_index = strtol(p, (char **)&p, 0);
}
void opt_recording_time(const char *arg)
{
recording_time = parse_date(arg, 1);
}
void print_error(const char *filename, int err)
{
switch(err) {
case AVERROR_NUMEXPECTED:
fprintf(stderr, "%s: Incorrect image filename syntax.\n"
"Use '%%d' to specify the image number:\n"
" for img1.jpg, img2.jpg, ..., use 'img%%d.jpg';\n"
" for img001.jpg, img002.jpg, ..., use 'img%%03d.jpg'.\n",
filename);
break;
case AVERROR_INVALIDDATA:
fprintf(stderr, "%s: Error while parsing header\n", filename);
break;
case AVERROR_NOFMT:
fprintf(stderr, "%s: Unknown format\n", filename);
break;
default:
fprintf(stderr, "%s: Error while opening file\n", filename);
break;
}
}
void opt_input_file(const char *filename)
{
AVFormatContext *ic;
AVFormatParameters params, *ap = &params;
int err, i, ret, rfps;
/* get default parameters from command line */
memset(ap, 0, sizeof(*ap));
ap->sample_rate = audio_sample_rate;
ap->channels = audio_channels;
ap->frame_rate = frame_rate;
ap->width = frame_width;
ap->height = frame_height;
/* open the input file with generic libav function */
err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
if (err < 0) {
print_error(filename, err);
exit(1);
}
/* If not enough info to get the stream parameters, we decode the
first frames to get it. (used in mpeg case for example) */
ret = av_find_stream_info(ic);
if (ret < 0) {
fprintf(stderr, "%s: could not find codec parameters\n", filename);
exit(1);
}
/* update the current parameters so that they match the one of the input stream */
for(i=0;i<ic->nb_streams;i++) {
AVCodecContext *enc = &ic->streams[i]->codec;
switch(enc->codec_type) {
case CODEC_TYPE_AUDIO:
//fprintf(stderr, "\nInput Audio channels: %d", enc->channels);
audio_channels = enc->channels;
audio_sample_rate = enc->sample_rate;
break;
case CODEC_TYPE_VIDEO:
frame_height = enc->height;
frame_width = enc->width;
rfps = ic->streams[i]->r_frame_rate;
if (enc->frame_rate != rfps) {
fprintf(stderr,"\nSeems that stream %d comes from film source: %2.2f->%2.2f\n",
i, (float)enc->frame_rate / FRAME_RATE_BASE,
(float)rfps / FRAME_RATE_BASE);
}
/* update the current frame rate to match the stream frame rate */
frame_rate = rfps;
break;
default:
av_abort();
}
}
input_files[nb_input_files] = ic;
/* dump the file content */
dump_format(ic, nb_input_files, filename, 0);
nb_input_files++;
file_iformat = NULL;
file_oformat = NULL;
}
void check_audio_video_inputs(int *has_video_ptr, int *has_audio_ptr)
{
int has_video, has_audio, i, j;
AVFormatContext *ic;
has_video = 0;
has_audio = 0;
for(j=0;j<nb_input_files;j++) {
ic = input_files[j];
for(i=0;i<ic->nb_streams;i++) {
AVCodecContext *enc = &ic->streams[i]->codec;
switch(enc->codec_type) {
case CODEC_TYPE_AUDIO:
has_audio = 1;
break;
case CODEC_TYPE_VIDEO:
has_video = 1;
break;
default:
av_abort();
}
}
}
*has_video_ptr = has_video;
*has_audio_ptr = has_audio;
}
void opt_output_file(const char *filename)
{
AVStream *st;
AVFormatContext *oc;
int use_video, use_audio, nb_streams, input_has_video, input_has_audio;
int codec_id;
if (!strcmp(filename, "-"))
filename = "pipe:";
oc = av_mallocz(sizeof(AVFormatContext));
if (!file_oformat) {
file_oformat = guess_format(NULL, filename, NULL);
if (!file_oformat) {
fprintf(stderr, "Unable for find a suitable output format for '%s'\n",
filename);
exit(1);
}
}
oc->oformat = file_oformat;
if (!strcmp(file_oformat->name, "ffm") &&
strstart(filename, "http:", NULL)) {
/* special case for files sent to ffserver: we get the stream
parameters from ffserver */
if (read_ffserver_streams(oc, filename) < 0) {
fprintf(stderr, "Could not read stream parameters from '%s'\n", filename);
exit(1);
}
} else {
use_video = file_oformat->video_codec != CODEC_ID_NONE;
use_audio = file_oformat->audio_codec != CODEC_ID_NONE;
/* disable if no corresponding type found and at least one
input file */
if (nb_input_files > 0) {
check_audio_video_inputs(&input_has_video, &input_has_audio);
if (!input_has_video)
use_video = 0;
if (!input_has_audio)
use_audio = 0;
}
/* manual disable */
if (audio_disable) {
use_audio = 0;
}
if (video_disable) {
use_video = 0;
}
nb_streams = 0;
if (use_video) {
AVCodecContext *video_enc;
st = av_mallocz(sizeof(AVStream));
if (!st) {
fprintf(stderr, "Could not alloc stream\n");
exit(1);
}
video_enc = &st->codec;
codec_id = file_oformat->video_codec;
if (video_codec_id != CODEC_ID_NONE)
codec_id = video_codec_id;
video_enc->codec_id = codec_id;
video_enc->codec_type = CODEC_TYPE_VIDEO;
video_enc->bit_rate = video_bit_rate;
video_enc->bit_rate_tolerance = video_bit_rate_tolerance;
video_enc->frame_rate = frame_rate;
video_enc->width = frame_width;
video_enc->height = frame_height;
if (!intra_only)
video_enc->gop_size = gop_size;
else
video_enc->gop_size = 0;
if (video_qscale || same_quality) {
video_enc->flags |= CODEC_FLAG_QSCALE;
video_enc->quality = video_qscale;
}
if (use_hq) {
video_enc->flags |= CODEC_FLAG_HQ;
}
if (use_4mv) {
video_enc->flags |= CODEC_FLAG_HQ;
video_enc->flags |= CODEC_FLAG_4MV;
}
if (b_frames) {
if (codec_id != CODEC_ID_MPEG4) {
fprintf(stderr, "\nB frames encoding only supported by MPEG-4.\n");
exit(1);
}
video_enc->max_b_frames = b_frames;
video_enc->b_frame_strategy = 0;
video_enc->b_quant_factor = 2.0;
}
video_enc->qmin = video_qmin;
video_enc->qmax = video_qmax;
video_enc->max_qdiff = video_qdiff;
video_enc->qblur = video_qblur;
video_enc->qcompress = video_qcomp;
if (do_psnr)
video_enc->get_psnr = 1;
else
video_enc->get_psnr = 0;
video_enc->me_method = me_method;
/* XXX: need to find a way to set codec parameters */
if (oc->oformat->flags & AVFMT_RGB24) {
video_enc->pix_fmt = PIX_FMT_RGB24;
}
oc->streams[nb_streams] = st;
nb_streams++;
}
if (use_audio) {
AVCodecContext *audio_enc;
st = av_mallocz(sizeof(AVStream));
if (!st) {
fprintf(stderr, "Could not alloc stream\n");
exit(1);
}
audio_enc = &st->codec;
codec_id = file_oformat->audio_codec;
if (audio_codec_id != CODEC_ID_NONE)
codec_id = audio_codec_id;
audio_enc->codec_id = codec_id;
audio_enc->codec_type = CODEC_TYPE_AUDIO;
audio_enc->bit_rate = audio_bit_rate;
audio_enc->sample_rate = audio_sample_rate;
/* For audio codecs other than AC3 we limit */
/* the number of coded channels to stereo */
if (audio_channels > 2 && codec_id != CODEC_ID_AC3) {
audio_enc->channels = 2;
} else
audio_enc->channels = audio_channels;
oc->streams[nb_streams] = st;
nb_streams++;
}
oc->nb_streams = nb_streams;
if (!nb_streams) {
fprintf(stderr, "No audio or video streams available\n");
exit(1);
}
if (str_title)
pstrcpy(oc->title, sizeof(oc->title), str_title);
if (str_author)
pstrcpy(oc->author, sizeof(oc->author), str_author);
if (str_copyright)
pstrcpy(oc->copyright, sizeof(oc->copyright), str_copyright);
if (str_comment)
pstrcpy(oc->comment, sizeof(oc->comment), str_comment);
}
output_files[nb_output_files] = oc;
/* dump the file content */
dump_format(oc, nb_output_files, filename, 1);
nb_output_files++;
strcpy(oc->filename, filename);
/* check filename in case of an image number is expected */
if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
if (filename_number_test(oc->filename) < 0) {
print_error(oc->filename, AVERROR_NUMEXPECTED);
exit(1);
}
}
if (!(oc->oformat->flags & AVFMT_NOFILE)) {
/* test if it already exists to avoid loosing precious files */
if (!file_overwrite &&
(strchr(filename, ':') == NULL ||
strstart(filename, "file:", NULL))) {
if (url_exist(filename)) {
int c;
printf("File '%s' already exists. Overwrite ? [y/N] ", filename);
fflush(stdout);
c = getchar();
if (toupper(c) != 'Y') {
fprintf(stderr, "Not overwriting - exiting\n");
exit(1);
}
}
}
/* open the file */
if (url_fopen(&oc->pb, filename, URL_WRONLY) < 0) {
fprintf(stderr, "Could not open '%s'\n", filename);
exit(1);
}
}
/* reset some options */
file_oformat = NULL;
file_iformat = NULL;
audio_disable = 0;
video_disable = 0;
audio_codec_id = CODEC_ID_NONE;
video_codec_id = CODEC_ID_NONE;
}
/* prepare dummy protocols for grab */
void prepare_grab(void)
{
int has_video, has_audio, i, j;
AVFormatContext *oc;
AVFormatContext *ic;
AVFormatParameters ap1, *ap = &ap1;
/* see if audio/video inputs are needed */
has_video = 0;
has_audio = 0;
memset(ap, 0, sizeof(*ap));
for(j=0;j<nb_output_files;j++) {
oc = output_files[j];
for(i=0;i<oc->nb_streams;i++) {
AVCodecContext *enc = &oc->streams[i]->codec;
switch(enc->codec_type) {
case CODEC_TYPE_AUDIO:
if (enc->sample_rate > ap->sample_rate)
ap->sample_rate = enc->sample_rate;
if (enc->channels > ap->channels)
ap->channels = enc->channels;
has_audio = 1;
break;
case CODEC_TYPE_VIDEO:
if (enc->width > ap->width)
ap->width = enc->width;
if (enc->height > ap->height)
ap->height = enc->height;
if (enc->frame_rate > ap->frame_rate)
ap->frame_rate = enc->frame_rate;
has_video = 1;
break;
default:
av_abort();
}
}
}
if (has_video == 0 && has_audio == 0) {
fprintf(stderr, "Output file must have at least one audio or video stream\n");
exit(1);
}
if (has_video) {
AVInputFormat *fmt1;
fmt1 = av_find_input_format("video_grab_device");
if (av_open_input_file(&ic, "", fmt1, 0, ap) < 0) {
fprintf(stderr, "Could not find video grab device\n");
exit(1);
}
/* by now video grab has one stream */
ic->streams[0]->r_frame_rate = ap->frame_rate;
input_files[nb_input_files] = ic;
dump_format(ic, nb_input_files, v4l_device, 0);
nb_input_files++;
}
if (has_audio) {
AVInputFormat *fmt1;
fmt1 = av_find_input_format("audio_device");
if (av_open_input_file(&ic, "", fmt1, 0, ap) < 0) {
fprintf(stderr, "Could not find audio grab device\n");
exit(1);
}
input_files[nb_input_files] = ic;
dump_format(ic, nb_input_files, audio_device, 0);
nb_input_files++;
}
}
/* open the necessary output devices for playing */
void prepare_play(void)
{
file_iformat = NULL;
file_oformat = guess_format("audio_device", NULL, NULL);
if (!file_oformat) {
fprintf(stderr, "Could not find audio device\n");
exit(1);
}
opt_output_file(audio_device);
}
#ifndef CONFIG_WIN32
INT64 getutime(void)
{
struct rusage rusage;
getrusage(RUSAGE_SELF, &rusage);
return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
}
#else
INT64 getutime(void)
{
return gettime();
}
#endif
extern int ffm_nopts;
void opt_bitexact(void)
{
avcodec_set_bit_exact();
/* disable generate of real time pts in ffm (need to be supressed anyway) */
ffm_nopts = 1;
}
void show_formats(void)
{
AVInputFormat *ifmt;
AVOutputFormat *ofmt;
URLProtocol *up;
AVCodec *p;
const char **pp;
printf("File formats:\n");
printf(" Encoding:");
for(ofmt = first_oformat; ofmt != NULL; ofmt = ofmt->next) {
printf(" %s", ofmt->name);
}
printf("\n");
printf(" Decoding:");
for(ifmt = first_iformat; ifmt != NULL; ifmt = ifmt->next) {
printf(" %s", ifmt->name);
}
printf("\n");
printf("Codecs:\n");
printf(" Encoders:");
for(p = first_avcodec; p != NULL; p = p->next) {
if (p->encode)
printf(" %s", p->name);
}
printf("\n");
printf(" Decoders:");
for(p = first_avcodec; p != NULL; p = p->next) {
if (p->decode)
printf(" %s", p->name);
}
printf("\n");
printf("Supported file protocols:");
for(up = first_protocol; up != NULL; up = up->next)
printf(" %s:", up->name);
printf("\n");
printf("Frame size abbreviations: sqcif qcif cif 4cif\n");
printf("Motion estimation methods:");
pp = motion_str;
while (*pp) {
printf(" %s", *pp);
if ((pp - motion_str + 1) == ME_ZERO)
printf("(fastest)");
else if ((pp - motion_str + 1) == ME_FULL)
printf("(slowest)");
else if ((pp - motion_str + 1) == ME_EPZS)
printf("(default)");
pp++;
}
printf("\n");
exit(1);
}
void show_help(void)
{
const char *prog;
const OptionDef *po;
int i, expert;
prog = do_play ? "ffplay" : "ffmpeg";
printf("%s version " FFMPEG_VERSION ", Copyright (c) 2000, 2001, 2002 Fabrice Bellard\n",
prog);
if (!do_play) {
printf("usage: ffmpeg [[options] -i input_file]... {[options] outfile}...\n"
"Hyper fast MPEG1/MPEG4/H263/RV and AC3/MPEG audio encoder\n");
} else {
printf("usage: ffplay [options] input_file...\n"
"Simple audio player\n");
}
printf("\n"
"Main options are:\n");
for(i=0;i<2;i++) {
if (i == 1)
printf("\nAdvanced options are:\n");
for(po = options; po->name != NULL; po++) {
char buf[64];
expert = (po->flags & OPT_EXPERT) != 0;
if (expert == i) {
strcpy(buf, po->name);
if (po->flags & HAS_ARG) {
strcat(buf, " ");
strcat(buf, po->argname);
}
printf("-%-17s %s\n", buf, po->help);
}
}
}
exit(1);
}
const OptionDef options[] = {
{ "L", 0, {(void*)show_licence}, "show license" },
{ "h", 0, {(void*)show_help}, "show help" },
{ "formats", 0, {(void*)show_formats}, "show available formats, codecs, protocols, ..." },
{ "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
{ "vcd", OPT_BOOL, {(void*)&mpeg_vcd}, "output Video CD MPEG-PS compliant file" },
{ "i", HAS_ARG, {(void*)opt_input_file}, "input file name", "filename" },
{ "y", OPT_BOOL, {(void*)&file_overwrite}, "overwrite output files" },
{ "map", HAS_ARG | OPT_EXPERT, {(void*)opt_map}, "set input stream mapping", "file:stream" },
{ "t", HAS_ARG, {(void*)opt_recording_time}, "set the recording time", "duration" },
{ "title", HAS_ARG | OPT_STRING, {(void*)&str_title}, "set the title", "string" },
{ "author", HAS_ARG | OPT_STRING, {(void*)&str_author}, "set the author", "string" },
{ "copyright", HAS_ARG | OPT_STRING, {(void*)&str_copyright}, "set the copyright", "string" },
{ "comment", HAS_ARG | OPT_STRING, {(void*)&str_comment}, "set the comment", "string" },
/* video options */
{ "b", HAS_ARG, {(void*)opt_video_bitrate}, "set video bitrate (in kbit/s)", "bitrate" },
{ "r", HAS_ARG, {(void*)opt_frame_rate}, "set frame rate (in Hz)", "rate" },
{ "s", HAS_ARG, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
{ "g", HAS_ARG | OPT_EXPERT, {(void*)opt_gop_size}, "set the group of picture size", "gop_size" },
{ "intra", OPT_BOOL | OPT_EXPERT, {(void*)&intra_only}, "use only intra frames"},
{ "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
{ "qscale", HAS_ARG | OPT_EXPERT, {(void*)opt_qscale}, "use fixed video quantiser scale (VBR)", "q" },
{ "qmin", HAS_ARG | OPT_EXPERT, {(void*)opt_qmin}, "min video quantiser scale (VBR)", "q" },
{ "qmax", HAS_ARG | OPT_EXPERT, {(void*)opt_qmax}, "max video quantiser scale (VBR)", "q" },
{ "qdiff", HAS_ARG | OPT_EXPERT, {(void*)opt_qdiff}, "max difference between the quantiser scale (VBR)", "q" },
{ "qblur", HAS_ARG | OPT_EXPERT, {(void*)opt_qblur}, "video quantiser scale blur (VBR)", "blur" },
{ "qcomp", HAS_ARG | OPT_EXPERT, {(void*)opt_qcomp}, "video quantiser scale compression (VBR)", "compression" },
{ "bt", HAS_ARG, {(void*)opt_video_bitrate_tolerance}, "set video bitrate tolerance (in kbit/s)", "tolerance" },
{ "vd", HAS_ARG | OPT_EXPERT, {(void*)opt_video_device}, "set video grab device", "device" },
{ "vcodec", HAS_ARG | OPT_EXPERT, {(void*)opt_video_codec}, "force video codec", "codec" },
{ "me", HAS_ARG | OPT_EXPERT, {(void*)opt_motion_estimation}, "set motion estimation method",
"method" },
{ "bf", HAS_ARG | OPT_EXPERT, {(void*)opt_b_frames}, "use 'frames' B frames (only MPEG-4)", "frames" },
{ "hq", OPT_BOOL | OPT_EXPERT, {(void*)&use_hq}, "activate high quality settings" },
{ "4mv", OPT_BOOL | OPT_EXPERT, {(void*)&use_4mv}, "use four motion vector by macroblock (only MPEG-4)" },
{ "sameq", OPT_BOOL, {(void*)&same_quality},
"use same video quality as source (implies VBR)" },
/* audio options */
{ "ab", HAS_ARG, {(void*)opt_audio_bitrate}, "set audio bitrate (in kbit/s)", "bitrate", },
{ "ar", HAS_ARG, {(void*)opt_audio_rate}, "set audio sampling rate (in Hz)", "rate" },
{ "ac", HAS_ARG, {(void*)opt_audio_channels}, "set number of audio channels", "channels" },
{ "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
{ "ad", HAS_ARG | OPT_EXPERT, {(void*)opt_audio_device}, "set audio device", "device" },
{ "acodec", HAS_ARG | OPT_EXPERT, {(void*)opt_audio_codec}, "force audio codec", "codec" },
{ "deinterlace", OPT_BOOL | OPT_EXPERT, {(void*)&do_deinterlace},
"deinterlace pictures" },
{ "benchmark", OPT_BOOL | OPT_EXPERT, {(void*)&do_benchmark},
"add timings for benchmarking" },
{ "hex", OPT_BOOL | OPT_EXPERT, {(void*)&do_hex_dump},
"dump each input packet" },
{ "psnr", OPT_BOOL | OPT_EXPERT, {(void*)&do_psnr}, "calculate PSNR of compressed frames" },
{ "vstats", OPT_BOOL | OPT_EXPERT, {(void*)&do_vstats}, "dump video coding statistics to file" },
{ "bitexact", OPT_EXPERT, {(void*)opt_bitexact}, "only use bit exact algorithms (for codec testing)" },
{ NULL, },
};
int main(int argc, char **argv)
{
int optindex, i;
const char *opt, *arg;
const OptionDef *po;
INT64 ti;
register_all();
/* detect if invoked as player */
i = strlen(argv[0]);
if (i >= 6 && !strcmp(argv[0] + i - 6, "ffplay"))
do_play = 1;
if (argc <= 1)
show_help();
/* parse options */
optindex = 1;
while (optindex < argc) {
opt = argv[optindex++];
if (opt[0] == '-' && opt[1] != '\0') {
po = options;
while (po->name != NULL) {
if (!strcmp(opt + 1, po->name))
break;
po++;
}
if (!po->name) {
fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);
exit(1);
}
arg = NULL;
if (po->flags & HAS_ARG)
arg = argv[optindex++];
if (po->flags & OPT_STRING) {
char *str;
str = strdup(arg);
*po->u.str_arg = str;
} else if (po->flags & OPT_BOOL) {
*po->u.int_arg = 1;
} else {
po->u.func_arg(arg);
}
} else {
if (!do_play) {
opt_output_file(opt);
} else {
opt_input_file(opt);
}
}
}
if (!do_play) {
/* file converter / grab */
if (nb_output_files <= 0) {
fprintf(stderr, "Must supply at least one output file\n");
exit(1);
}
if (nb_input_files == 0) {
prepare_grab();
}
} else {
/* player */
if (nb_input_files <= 0) {
fprintf(stderr, "Must supply at least one input file\n");
exit(1);
}
prepare_play();
}
ti = getutime();
av_encode(output_files, nb_output_files, input_files, nb_input_files,
stream_maps, nb_stream_maps);
ti = getutime() - ti;
if (do_benchmark) {
printf("bench: utime=%0.3fs\n", ti / 1000000.0);
}
/* close files */
for(i=0;i<nb_output_files;i++) {
if (!(output_files[i]->oformat->flags & AVFMT_NOFILE))
url_fclose(&output_files[i]->pb);
}
for(i=0;i<nb_input_files;i++)
av_close_input_file(input_files[i]);
return 0;
}
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