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rawvideo patch by (Fred Rothganger <rothgang at uiuc dot edu>)

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Originally committed as revision 1687 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Fred Rothganger 2003-03-16 21:03:20 +00:00 committed by Michael Niedermayer
parent b536d0aad2
commit e8750b0076
7 changed files with 224 additions and 152 deletions
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126
ffmpeg.c
View File

@ -386,102 +386,6 @@ static void do_audio_out(AVFormatContext *s,
}
}
/* 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_t *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;
}
av_write_frame(s, index, buf, size);
av_free(buf);
}
static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
{
AVCodecContext *dec;
@ -657,7 +561,13 @@ static void do_video_out(AVFormatContext *s,
/* duplicates frame if needed */
/* XXX: pb because no interleaving */
for(i=0;i<nb_frames;i++) {
if (enc->codec_id != CODEC_ID_RAWVIDEO) {
if (s->oformat->flags & AVFMT_RAWPICTURE) {
/* raw pictures are written as AVPicture structure to
avoid any copies. We support temorarily the older
method. */
av_write_frame(s, ost->index,
(uint8_t *)final_picture, sizeof(AVPicture));
} else {
AVFrame big_picture;
memset(&big_picture, 0, sizeof(AVFrame));
@ -683,17 +593,6 @@ static void do_video_out(AVFormatContext *s,
if (ost->logfile && enc->stats_out) {
fprintf(ost->logfile, "%s", enc->stats_out);
}
} else {
if (s->oformat->flags & AVFMT_RAWPICTURE) {
/* raw pictures are written as AVPicture structure to
avoid any copies. We support temorarily the older
method. */
av_write_frame(s, ost->index,
(uint8_t *)final_picture, sizeof(AVPicture));
} else {
write_picture(s, ost->index, final_picture, enc->pix_fmt,
enc->width, enc->height);
}
}
ost->frame_number++;
}
@ -1311,16 +1210,7 @@ static int av_encode(AVFormatContext **output_files,
data_buf = (uint8_t *)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 {
{
AVFrame big_picture;
data_size = (ist->st->codec.width * ist->st->codec.height * 3) / 2;

2
libavcodec/Makefile
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@ -16,7 +16,7 @@ OBJS= common.o utils.o mem.o allcodecs.o \
motion_est.o imgconvert.o imgresample.o \
mpeg12.o mpegaudiodec.o pcm.o simple_idct.o \
ratecontrol.o adpcm.o eval.o dv.o error_resilience.o \
fft.o mdct.o mace.o huffyuv.o cyuv.o opts.o
fft.o mdct.o mace.o huffyuv.o cyuv.o opts.o raw.o
ASM_OBJS=
# codecs which are patented in some non free countries like the us

4
libavcodec/common.h
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@ -907,6 +907,10 @@ static inline int ff_get_fourcc(const char *s){
return (s[0]) + (s[1]<<8) + (s[2]<<16) + (s[3]<<24);
}
#define MKTAG(a,b,c,d) (a | (b << 8) | (c << 16) | (d << 24))
#define MKBETAG(a,b,c,d) (d | (c << 8) | (b << 16) | (a << 24))
void ff_float2fraction(int *nom_arg, int *denom_arg, double f, int max);

204
libavcodec/raw.c Normal file
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@ -0,0 +1,204 @@
/*
* Raw Video Codec
* Copyright (c) 2001 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
*/
/**
* @file raw.c
* Raw Video Codec
*/
#include "avcodec.h"
typedef struct PixleFormatTag {
int pix_fmt;
unsigned int fourcc;
} PixelFormatTag;
const PixelFormatTag pixelFormatTags[] = {
{ PIX_FMT_YUV422, MKTAG('Y', '4', '2', '2') },
{ -1, 0 },
};
static int findPixelFormat(unsigned int fourcc)
{
const PixelFormatTag * tags = pixelFormatTags;
while (tags->pix_fmt >= 0) {
if (tags->fourcc == fourcc)
return tags->pix_fmt;
tags++;
}
return PIX_FMT_YUV420P;
}
typedef struct RawVideoContext {
unsigned char * buffer; /* block of memory for holding one frame */
unsigned char * p; /* current position in buffer */
int length; /* number of bytes in buffer */
} RawVideoContext;
static int raw_init(AVCodecContext *avctx)
{
RawVideoContext *context = avctx->priv_data;
if (avctx->codec_tag) {
avctx->pix_fmt = findPixelFormat(avctx->codec_tag);
}
context->length = avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height);
context->buffer = av_malloc(context->length);
context->p = context->buffer;
if (! context->buffer) {
return -1;
}
return 0;
}
static int raw_decode(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t *buf, int buf_size)
{
RawVideoContext *context = avctx->priv_data;
AVPicture * picture = (AVPicture *) data;
/* Early out without copy if packet size == frame size */
if (buf_size == context->length && context->p == context->buffer) {
avpicture_fill(picture, buf, avctx->pix_fmt, avctx->width, avctx->height);
*data_size = sizeof(AVPicture);
return buf_size;
}
int bytesNeeded = context->length - (context->p - context->buffer);
if (buf_size < bytesNeeded) {
memcpy(context->p, buf, buf_size);
context->p += buf_size;
*data_size = 0;
return buf_size;
}
memcpy(context->p, buf, bytesNeeded);
context->p = context->buffer;
avpicture_fill(picture, context->buffer, avctx->pix_fmt, avctx->width, avctx->height);
*data_size = sizeof(AVPicture);
return bytesNeeded;
}
static int raw_close(AVCodecContext *avctx)
{
RawVideoContext *context = avctx->priv_data;
av_freep(& context->buffer);
return 0;
}
static int raw_encode(AVCodecContext *avctx,
unsigned char *frame, int buf_size, void *data)
{
AVPicture * picture = data;
unsigned char *src;
unsigned char *dest = frame;
int i, j;
int w = avctx->width;
int h = avctx->height;
int size = avpicture_get_size(avctx->pix_fmt, w, h);
if (size > buf_size) {
return -1;
}
switch(avctx->pix_fmt) {
case PIX_FMT_YUV420P:
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:
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:
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:
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:
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 -1;
}
return size;
}
AVCodec rawvideo_codec = {
"rawvideo",
CODEC_TYPE_VIDEO,
CODEC_ID_RAWVIDEO,
sizeof(RawVideoContext),
raw_init,
raw_encode,
raw_close,
raw_decode,
};

29
libavcodec/utils.c
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@ -647,32 +647,3 @@ int64_t av_rescale(int64_t a, int b, int c){
return ((h/c)<<32) + l/c;
}
static int raw_encode_init(AVCodecContext *s)
{
return 0;
}
static int raw_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t *buf, int buf_size)
{
return -1;
}
static int raw_encode_frame(AVCodecContext *avctx,
unsigned char *frame, int buf_size, void *data)
{
return -1;
}
AVCodec rawvideo_codec = {
"rawvideo",
CODEC_TYPE_VIDEO,
CODEC_ID_RAWVIDEO,
0,
raw_encode_init,
raw_encode_frame,
NULL,
raw_decode_frame,
};

3
libavformat/avformat.h
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@ -331,9 +331,6 @@ int redir_open(AVFormatContext **ic_ptr, ByteIOContext *f);
extern AVOutputFormat yuv4mpegpipe_oformat;
/* utils.c */
#define MKTAG(a,b,c,d) (a | (b << 8) | (c << 16) | (d << 24))
#define MKBETAG(a,b,c,d) (d | (c << 8) | (b << 16) | (a << 24))
void av_register_input_format(AVInputFormat *format);
void av_register_output_format(AVOutputFormat *format);
AVOutputFormat *guess_stream_format(const char *short_name,

8
libavformat/avienc.c
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@ -89,6 +89,7 @@ const CodecTag codec_bmp_tags[] = {
{ CODEC_ID_HUFFYUV, MKTAG('h', 'f', 'y', 'u') },
{ CODEC_ID_CYUV, MKTAG('C', 'Y', 'U', 'V') },
{ CODEC_ID_CYUV, MKTAG('c', 'y', 'u', 'v') },
{ CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', '2') },
{ 0, 0 },
};
@ -249,12 +250,17 @@ static int avi_write_header(AVFormatContext *s)
stream = &s->streams[i]->codec;
/* FourCC should really be set by the codec itself */
if (! stream->codec_tag) {
stream->codec_tag = codec_get_bmp_tag(stream->codec_id);
}
/* stream generic header */
strh = start_tag(pb, "strh");
switch(stream->codec_type) {
case CODEC_TYPE_VIDEO:
put_tag(pb, "vids");
put_le32(pb, codec_get_bmp_tag(stream->codec_id));
put_le32(pb, stream->codec_tag);
put_le32(pb, 0); /* flags */
put_le16(pb, 0); /* priority */
put_le16(pb, 0); /* language */