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added jpeg image encoder and decoder (new YUV handling routines and mjpeg codec fixes are necessary to go further)

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Originally committed as revision 1534 to svn://svn.ffmpeg.org/ffmpeg/trunk
pull/126/head
Fabrice Bellard 22 years ago
parent 12b64a2252
commit 0250738f13
5 changed files with 270 additions and 221 deletions
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  1. 4
      libavformat/Makefile
  2. 1
      libavformat/allformats.c
  3. 1
      libavformat/avformat.h
  4. 377
      libavformat/jpeg.c
  5. 108
      libavformat/mpjpeg.c

4
libavformat/Makefile
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@ -12,7 +12,7 @@ OBJS= utils.o cutils.o allformats.o
# mux and demuxes
OBJS+=mpeg.o mpegts.o ffm.o crc.o img.o raw.o rm.o \
avienc.o avidec.o wav.o swf.o au.o gif.o mov.o jpeg.o dv.o \
avienc.o avidec.o wav.o swf.o au.o gif.o mov.o mpjpeg.o dv.o \
yuv4mpeg.o
ifeq ($(CONFIG_RISKY),yes)
@ -20,7 +20,7 @@ OBJS+= asf.o
endif
# image formats
OBJS+= pnm.o yuv.o png.o libpng/png.o libpng/pngread.o libpng/pngrutil.o libpng/pngwrite.o libpng/pngwutil.o
OBJS+= pnm.o yuv.o png.o libpng/png.o libpng/pngread.o libpng/pngrutil.o libpng/pngwrite.o libpng/pngwutil.o jpeg.o gifdec.o
# file I/O
OBJS+= avio.o aviobuf.o file.o
OBJS+= framehook.o

1
libavformat/allformats.c
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@ -76,6 +76,7 @@ void av_register_all(void)
av_register_image_format(&pgmyuv_image_format);
av_register_image_format(&yuv_image_format);
av_register_image_format(&png_image_format);
av_register_image_format(&jpeg_image_format);
/* file protocols */
register_protocol(&file_protocol);

1
libavformat/avformat.h
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@ -236,6 +236,7 @@ extern AVImageFormat ppm_image_format;
extern AVImageFormat pgmyuv_image_format;
extern AVImageFormat yuv_image_format;
extern AVImageFormat png_image_format;
extern AVImageFormat jpeg_image_format;
/* XXX: use automatic init with either ELF sections or C file parser */
/* modules */

377
libavformat/jpeg.c
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@ -1,6 +1,6 @@
/*
* JPEG based formats
* Copyright (c) 2000, 2001 Fabrice Bellard.
* JPEG image format
* Copyright (c) 2003 Fabrice Bellard.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -18,251 +18,190 @@
*/
#include "avformat.h"
/* Multipart JPEG */
#define BOUNDARY_TAG "ffserver"
static int mpjpeg_write_header(AVFormatContext *s)
{
UINT8 buf1[256];
snprintf(buf1, sizeof(buf1), "--%s\n", BOUNDARY_TAG);
put_buffer(&s->pb, buf1, strlen(buf1));
put_flush_packet(&s->pb);
return 0;
}
static int mpjpeg_write_packet(AVFormatContext *s, int stream_index,
UINT8 *buf, int size, int force_pts)
{
UINT8 buf1[256];
snprintf(buf1, sizeof(buf1), "Content-type: image/jpeg\n\n");
put_buffer(&s->pb, buf1, strlen(buf1));
put_buffer(&s->pb, buf, size);
snprintf(buf1, sizeof(buf1), "\n--%s\n", BOUNDARY_TAG);
put_buffer(&s->pb, buf1, strlen(buf1));
put_flush_packet(&s->pb);
return 0;
}
static int mpjpeg_write_trailer(AVFormatContext *s)
{
return 0;
}
static AVOutputFormat mpjpeg_format = {
"mpjpeg",
"Mime multipart JPEG format",
"multipart/x-mixed-replace;boundary=" BOUNDARY_TAG,
"mjpg",
0,
CODEC_ID_NONE,
CODEC_ID_MJPEG,
mpjpeg_write_header,
mpjpeg_write_packet,
mpjpeg_write_trailer,
};
/*************************************/
/* single frame JPEG */
static int single_jpeg_write_header(AVFormatContext *s)
{
return 0;
}
static int single_jpeg_write_packet(AVFormatContext *s, int stream_index,
UINT8 *buf, int size, int force_pts)
{
put_buffer(&s->pb, buf, size);
put_flush_packet(&s->pb);
return 1; /* no more data can be sent */
}
static int single_jpeg_write_trailer(AVFormatContext *s)
static int jpeg_probe(AVProbeData *pd)
{
return 0;
if (pd->buf_size >= 64 &&
pd->buf[0] == 0xff && pd->buf[1] == 0xd8 && pd->buf[2] == 0xff)
return AVPROBE_SCORE_MAX;
else
return 0;
}
static AVOutputFormat single_jpeg_format = {
"singlejpeg",
"single JPEG image",
"image/jpeg",
NULL, /* note: no extension to favorize jpeg multiple images match */
0,
CODEC_ID_NONE,
CODEC_ID_MJPEG,
single_jpeg_write_header,
single_jpeg_write_packet,
single_jpeg_write_trailer,
};
/*************************************/
/* multiple jpeg images */
typedef struct JpegContext {
char path[1024];
int img_number;
} JpegContext;
typedef struct JpegOpaque {
int (*alloc_cb)(void *opaque, AVImageInfo *info);
void *opaque;
int ret_code;
} JpegOpaque;
static int jpeg_write_header(AVFormatContext *s1)
/* called by the codec to allocate the image */
static int jpeg_get_buffer(AVCodecContext *c, AVFrame *picture)
{
JpegContext *s;
s = av_mallocz(sizeof(JpegContext));
if (!s)
JpegOpaque *jctx = c->opaque;
AVImageInfo info1, *info = &info1;
int ret, i;
info->width = c->width;
info->height = c->height;
info->pix_fmt = c->pix_fmt;
ret = jctx->alloc_cb(jctx->opaque, info);
if (ret) {
jctx->ret_code = ret;
return -1;
s1->priv_data = s;
pstrcpy(s->path, sizeof(s->path), s1->filename);
s->img_number = 1;
return 0;
}
static int jpeg_write_packet(AVFormatContext *s1, int stream_index,
UINT8 *buf, int size, int force_pts)
{
JpegContext *s = s1->priv_data;
char filename[1024];
ByteIOContext f1, *pb = &f1;
if (get_frame_filename(filename, sizeof(filename),
s->path, s->img_number) < 0)
return -EIO;
if (url_fopen(pb, filename, URL_WRONLY) < 0)
return -EIO;
put_buffer(pb, buf, size);
put_flush_packet(pb);
url_fclose(pb);
s->img_number++;
return 0;
} else {
for(i=0;i<3;i++) {
picture->data[i] = info->pict.data[i];
picture->linesize[i] = info->pict.linesize[i];
}
return 0;
}
}
static int jpeg_write_trailer(AVFormatContext *s1)
static void img_copy(UINT8 *dst, int dst_wrap,
UINT8 *src, int src_wrap,
int width, int height)
{
return 0;
for(;height > 0; height--) {
memcpy(dst, src, width);
dst += dst_wrap;
src += src_wrap;
}
}
/***/
/* XXX: libavcodec is broken for truncated jpegs! */
#define IO_BUF_SIZE (1024*1024)
static int jpeg_read_header(AVFormatContext *s1, AVFormatParameters *ap)
static int jpeg_read(ByteIOContext *f,
int (*alloc_cb)(void *opaque, AVImageInfo *info), void *opaque)
{
JpegContext *s;
int i;
char buf[1024];
ByteIOContext pb1, *f = &pb1;
AVStream *st;
s = av_mallocz(sizeof(JpegContext));
if (!s)
AVCodecContext *c;
AVFrame *picture, picture1;
int len, size, got_picture, i;
uint8_t *inbuf_ptr, inbuf[IO_BUF_SIZE];
JpegOpaque jctx;
jctx.alloc_cb = alloc_cb;
jctx.opaque = opaque;
jctx.ret_code = -1; /* default return code is error */
c = avcodec_alloc_context();
if (!c)
return -1;
picture= avcodec_alloc_frame();
if (!picture) {
av_free(c);
return -1;
s1->priv_data = s;
pstrcpy(s->path, sizeof(s->path), s1->filename);
s1->nb_streams = 1;
st = av_mallocz(sizeof(AVStream));
if (!st) {
av_free(s);
return -ENOMEM;
}
avcodec_get_context_defaults(&st->codec);
s1->streams[0] = st;
s->img_number = 0;
/* try to find the first image */
for(i=0;i<5;i++) {
if (get_frame_filename(buf, sizeof(buf), s->path, s->img_number) < 0)
goto fail;
if (url_fopen(f, buf, URL_RDONLY) >= 0)
c->opaque = &jctx;
c->get_buffer = jpeg_get_buffer;
c->flags |= CODEC_FLAG_TRUNCATED; /* we dont send complete frames */
if (avcodec_open(c, &mjpeg_decoder) < 0)
goto fail1;
for(;;) {
size = get_buffer(f, inbuf, sizeof(inbuf));
if (size == 0)
break;
s->img_number++;
inbuf_ptr = inbuf;
while (size > 0) {
len = avcodec_decode_video(c, &picture1, &got_picture,
inbuf_ptr, size);
if (len < 0)
goto fail;
if (got_picture)
goto the_end;
size -= len;
inbuf_ptr += len;
}
}
if (i == 5)
the_end:
/* XXX: currently, the mjpeg decoder does not use AVFrame, so we
must do it by hand */
if (jpeg_get_buffer(c, picture) < 0)
goto fail;
url_fclose(f);
st->codec.codec_type = CODEC_TYPE_VIDEO;
st->codec.codec_id = CODEC_ID_MJPEG;
if (!ap || !ap->frame_rate)
st->codec.frame_rate = 25 * FRAME_RATE_BASE;
else
st->codec.frame_rate = ap->frame_rate;
return 0;
for(i=0;i<3;i++) {
int w, h;
w = c->width;
h = c->height;
if (i >= 1) {
switch(c->pix_fmt) {
default:
case PIX_FMT_YUV420P:
w >>= 1;
h >>= 1;
break;
case PIX_FMT_YUV422P:
w >>= 1;
break;
case PIX_FMT_YUV444P:
break;
}
}
img_copy(picture->data[i], picture->linesize[i],
picture1.data[i], picture1.linesize[i],
w, h);
}
jctx.ret_code = 0;
fail:
av_free(s);
return -EIO;
avcodec_close(c);
fail1:
av_free(picture);
av_free(c);
return jctx.ret_code;
}
static int jpeg_read_packet(AVFormatContext *s1, AVPacket *pkt)
static int jpeg_write(ByteIOContext *pb, AVImageInfo *info)
{
JpegContext *s = s1->priv_data;
char filename[1024];
int size;
ByteIOContext f1, *f = &f1;
if (get_frame_filename(filename, sizeof(filename),
s->path, s->img_number) < 0)
return -EIO;
AVCodecContext *c;
uint8_t *outbuf = NULL;
int outbuf_size, ret, size, i;
AVFrame *picture;
ret = -1;
c = avcodec_alloc_context();
if (!c)
return -1;
picture = avcodec_alloc_frame();
if (!picture)
goto fail2;
c->width = info->width;
c->height = info->height;
c->pix_fmt = info->pix_fmt;
for(i=0;i<3;i++) {
picture->data[i] = info->pict.data[i];
picture->linesize[i] = info->pict.linesize[i];
}
/* set the quality */
picture->quality = 3; /* XXX: a parameter should be used */
c->flags |= CODEC_FLAG_QSCALE;
f = &f1;
if (url_fopen(f, filename, URL_RDONLY) < 0)
return -EIO;
if (avcodec_open(c, &mjpeg_encoder) < 0)
goto fail1;
size = url_seek(url_fileno(f), 0, SEEK_END);
url_seek(url_fileno(f), 0, SEEK_SET);
av_new_packet(pkt, size);
pkt->stream_index = 0;
get_buffer(f, pkt->data, size);
/* XXX: needs to sort out that size problem */
outbuf_size = 1000000;
outbuf = av_malloc(outbuf_size);
url_fclose(f);
s->img_number++;
return 0;
}
size = avcodec_encode_video(c, outbuf, outbuf_size, picture);
if (size < 0)
goto fail;
put_buffer(pb, outbuf, size);
put_flush_packet(pb);
ret = 0;
static int jpeg_read_close(AVFormatContext *s1)
{
return 0;
fail:
avcodec_close(c);
av_free(outbuf);
fail1:
av_free(picture);
fail2:
av_free(c);
return ret;
}
static AVInputFormat jpeg_iformat = {
"jpeg",
"JPEG image",
sizeof(JpegContext),
NULL,
jpeg_read_header,
jpeg_read_packet,
jpeg_read_close,
NULL,
.flags = AVFMT_NOFILE | AVFMT_NEEDNUMBER,
.extensions = "jpg,jpeg",
};
static AVOutputFormat jpeg_oformat = {
AVImageFormat jpeg_image_format = {
"jpeg",
"JPEG image",
"image/jpeg",
"jpg,jpeg",
sizeof(JpegContext),
CODEC_ID_NONE,
CODEC_ID_MJPEG,
jpeg_write_header,
jpeg_write_packet,
jpeg_write_trailer,
.flags = AVFMT_NOFILE | AVFMT_NEEDNUMBER,
jpeg_probe,
jpeg_read,
(1 << PIX_FMT_YUV420P) | (1 << PIX_FMT_YUV422P) | (1 << PIX_FMT_YUV444P),
jpeg_write,
};
int jpeg_init(void)
{
av_register_output_format(&mpjpeg_format);
av_register_output_format(&single_jpeg_format);
av_register_input_format(&jpeg_iformat);
av_register_output_format(&jpeg_oformat);
return 0;
}

108
libavformat/mpjpeg.c
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@ -0,0 +1,108 @@
/*
* Multipart JPEG format
* Copyright (c) 2000, 2001, 2002, 2003 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
*/
#include "avformat.h"
/* Multipart JPEG */
#define BOUNDARY_TAG "ffserver"
static int mpjpeg_write_header(AVFormatContext *s)
{
UINT8 buf1[256];
snprintf(buf1, sizeof(buf1), "--%s\n", BOUNDARY_TAG);
put_buffer(&s->pb, buf1, strlen(buf1));
put_flush_packet(&s->pb);
return 0;
}
static int mpjpeg_write_packet(AVFormatContext *s, int stream_index,
UINT8 *buf, int size, int force_pts)
{
UINT8 buf1[256];
snprintf(buf1, sizeof(buf1), "Content-type: image/jpeg\n\n");
put_buffer(&s->pb, buf1, strlen(buf1));
put_buffer(&s->pb, buf, size);
snprintf(buf1, sizeof(buf1), "\n--%s\n", BOUNDARY_TAG);
put_buffer(&s->pb, buf1, strlen(buf1));
put_flush_packet(&s->pb);
return 0;
}
static int mpjpeg_write_trailer(AVFormatContext *s)
{
return 0;
}
static AVOutputFormat mpjpeg_format = {
"mpjpeg",
"Mime multipart JPEG format",
"multipart/x-mixed-replace;boundary=" BOUNDARY_TAG,
"mjpg",
0,
CODEC_ID_NONE,
CODEC_ID_MJPEG,
mpjpeg_write_header,
mpjpeg_write_packet,
mpjpeg_write_trailer,
};
/*************************************/
/* single frame JPEG */
static int single_jpeg_write_header(AVFormatContext *s)
{
return 0;
}
static int single_jpeg_write_packet(AVFormatContext *s, int stream_index,
UINT8 *buf, int size, int force_pts)
{
put_buffer(&s->pb, buf, size);
put_flush_packet(&s->pb);
return 1; /* no more data can be sent */
}
static int single_jpeg_write_trailer(AVFormatContext *s)
{
return 0;
}
static AVOutputFormat single_jpeg_format = {
"singlejpeg",
"single JPEG image",
"image/jpeg",
NULL, /* note: no extension to favorize jpeg multiple images match */
0,
CODEC_ID_NONE,
CODEC_ID_MJPEG,
single_jpeg_write_header,
single_jpeg_write_packet,
single_jpeg_write_trailer,
};
int jpeg_init(void)
{
av_register_output_format(&mpjpeg_format);
av_register_output_format(&single_jpeg_format);
return 0;
}
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