mirror of https://github.com/FFmpeg/FFmpeg.git
Originally committed as revision 8996 to svn://svn.ffmpeg.org/ffmpeg/trunkpull/126/head
parent
a2e4c0ddae
commit
9ac2e7971b
4 changed files with 536 additions and 536 deletions
@ -1,147 +0,0 @@ |
||||
/*
|
||||
* PNM image format |
||||
* Copyright (c) 2002, 2003 Fabrice Bellard. |
||||
* |
||||
* This file is part of FFmpeg. |
||||
* |
||||
* FFmpeg 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 2.1 of the License, or (at your option) any later version. |
||||
* |
||||
* FFmpeg 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 FFmpeg; if not, write to the Free Software |
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
||||
*/ |
||||
#include "avcodec.h" |
||||
#include "pnm.h" |
||||
|
||||
static inline int pnm_space(int c) |
||||
{ |
||||
return (c == ' ' || c == '\n' || c == '\r' || c == '\t'); |
||||
} |
||||
|
||||
static void pnm_get(PNMContext *sc, char *str, int buf_size) |
||||
{ |
||||
char *s; |
||||
int c; |
||||
|
||||
/* skip spaces and comments */ |
||||
for(;;) { |
||||
c = *sc->bytestream++; |
||||
if (c == '#') { |
||||
do { |
||||
c = *sc->bytestream++; |
||||
} while (c != '\n' && sc->bytestream < sc->bytestream_end); |
||||
} else if (!pnm_space(c)) { |
||||
break; |
||||
} |
||||
} |
||||
|
||||
s = str; |
||||
while (sc->bytestream < sc->bytestream_end && !pnm_space(c)) { |
||||
if ((s - str) < buf_size - 1) |
||||
*s++ = c; |
||||
c = *sc->bytestream++; |
||||
} |
||||
*s = '\0'; |
||||
} |
||||
|
||||
int ff_pnm_decode_header(AVCodecContext *avctx, PNMContext * const s){ |
||||
char buf1[32], tuple_type[32]; |
||||
int h, w, depth, maxval; |
||||
|
||||
pnm_get(s, buf1, sizeof(buf1)); |
||||
if (!strcmp(buf1, "P4")) { |
||||
avctx->pix_fmt = PIX_FMT_MONOWHITE; |
||||
} else if (!strcmp(buf1, "P5")) { |
||||
if (avctx->codec_id == CODEC_ID_PGMYUV) |
||||
avctx->pix_fmt = PIX_FMT_YUV420P; |
||||
else |
||||
avctx->pix_fmt = PIX_FMT_GRAY8; |
||||
} else if (!strcmp(buf1, "P6")) { |
||||
avctx->pix_fmt = PIX_FMT_RGB24; |
||||
} else if (!strcmp(buf1, "P7")) { |
||||
w = -1; |
||||
h = -1; |
||||
maxval = -1; |
||||
depth = -1; |
||||
tuple_type[0] = '\0'; |
||||
for(;;) { |
||||
pnm_get(s, buf1, sizeof(buf1)); |
||||
if (!strcmp(buf1, "WIDTH")) { |
||||
pnm_get(s, buf1, sizeof(buf1)); |
||||
w = strtol(buf1, NULL, 10); |
||||
} else if (!strcmp(buf1, "HEIGHT")) { |
||||
pnm_get(s, buf1, sizeof(buf1)); |
||||
h = strtol(buf1, NULL, 10); |
||||
} else if (!strcmp(buf1, "DEPTH")) { |
||||
pnm_get(s, buf1, sizeof(buf1)); |
||||
depth = strtol(buf1, NULL, 10); |
||||
} else if (!strcmp(buf1, "MAXVAL")) { |
||||
pnm_get(s, buf1, sizeof(buf1)); |
||||
maxval = strtol(buf1, NULL, 10); |
||||
} else if (!strcmp(buf1, "TUPLETYPE")) { |
||||
pnm_get(s, tuple_type, sizeof(tuple_type)); |
||||
} else if (!strcmp(buf1, "ENDHDR")) { |
||||
break; |
||||
} else { |
||||
return -1; |
||||
} |
||||
} |
||||
/* check that all tags are present */ |
||||
if (w <= 0 || h <= 0 || maxval <= 0 || depth <= 0 || tuple_type[0] == '\0' || avcodec_check_dimensions(avctx, w, h)) |
||||
return -1; |
||||
|
||||
avctx->width = w; |
||||
avctx->height = h; |
||||
if (depth == 1) { |
||||
if (maxval == 1) |
||||
avctx->pix_fmt = PIX_FMT_MONOWHITE; |
||||
else |
||||
avctx->pix_fmt = PIX_FMT_GRAY8; |
||||
} else if (depth == 3) { |
||||
avctx->pix_fmt = PIX_FMT_RGB24; |
||||
} else if (depth == 4) { |
||||
avctx->pix_fmt = PIX_FMT_RGB32; |
||||
} else { |
||||
return -1; |
||||
} |
||||
return 0; |
||||
} else { |
||||
return -1; |
||||
} |
||||
pnm_get(s, buf1, sizeof(buf1)); |
||||
avctx->width = atoi(buf1); |
||||
if (avctx->width <= 0) |
||||
return -1; |
||||
pnm_get(s, buf1, sizeof(buf1)); |
||||
avctx->height = atoi(buf1); |
||||
if(avcodec_check_dimensions(avctx, avctx->width, avctx->height)) |
||||
return -1; |
||||
if (avctx->pix_fmt != PIX_FMT_MONOWHITE) { |
||||
pnm_get(s, buf1, sizeof(buf1)); |
||||
s->maxval = atoi(buf1); |
||||
if(s->maxval >= 256 && avctx->pix_fmt == PIX_FMT_GRAY8) { |
||||
avctx->pix_fmt = PIX_FMT_GRAY16BE; |
||||
if (s->maxval != 65535) |
||||
avctx->pix_fmt = PIX_FMT_GRAY16; |
||||
} |
||||
} |
||||
/* more check if YUV420 */ |
||||
if (avctx->pix_fmt == PIX_FMT_YUV420P) { |
||||
if ((avctx->width & 1) != 0) |
||||
return -1; |
||||
h = (avctx->height * 2); |
||||
if ((h % 3) != 0) |
||||
return -1; |
||||
h /= 3; |
||||
avctx->height = h; |
||||
} |
||||
return 0; |
||||
} |
@ -0,0 +1,426 @@ |
||||
/*
|
||||
* PNM image format |
||||
* Copyright (c) 2002, 2003 Fabrice Bellard. |
||||
* |
||||
* This file is part of FFmpeg. |
||||
* |
||||
* FFmpeg 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 2.1 of the License, or (at your option) any later version. |
||||
* |
||||
* FFmpeg 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 FFmpeg; if not, write to the Free Software |
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
||||
*/ |
||||
#include "avcodec.h" |
||||
#include "pnm.h" |
||||
|
||||
|
||||
static int common_init(AVCodecContext *avctx){ |
||||
PNMContext *s = avctx->priv_data; |
||||
|
||||
avcodec_get_frame_defaults((AVFrame*)&s->picture); |
||||
avctx->coded_frame= (AVFrame*)&s->picture; |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
static int pnm_decode_frame(AVCodecContext *avctx, |
||||
void *data, int *data_size, |
||||
uint8_t *buf, int buf_size) |
||||
{ |
||||
PNMContext * const s = avctx->priv_data; |
||||
AVFrame *picture = data; |
||||
AVFrame * const p= (AVFrame*)&s->picture; |
||||
int i, n, linesize, h, upgrade = 0; |
||||
unsigned char *ptr; |
||||
|
||||
s->bytestream_start= |
||||
s->bytestream= buf; |
||||
s->bytestream_end= buf + buf_size; |
||||
|
||||
if(ff_pnm_decode_header(avctx, s) < 0) |
||||
return -1; |
||||
|
||||
if(p->data[0]) |
||||
avctx->release_buffer(avctx, p); |
||||
|
||||
p->reference= 0; |
||||
if(avctx->get_buffer(avctx, p) < 0){ |
||||
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); |
||||
return -1; |
||||
} |
||||
p->pict_type= FF_I_TYPE; |
||||
p->key_frame= 1; |
||||
|
||||
switch(avctx->pix_fmt) { |
||||
default: |
||||
return -1; |
||||
case PIX_FMT_RGB24: |
||||
n = avctx->width * 3; |
||||
goto do_read; |
||||
case PIX_FMT_GRAY8: |
||||
n = avctx->width; |
||||
if (s->maxval < 255) |
||||
upgrade = 1; |
||||
goto do_read; |
||||
case PIX_FMT_GRAY16BE: |
||||
case PIX_FMT_GRAY16LE: |
||||
n = avctx->width * 2; |
||||
if (s->maxval < 65535) |
||||
upgrade = 2; |
||||
goto do_read; |
||||
case PIX_FMT_MONOWHITE: |
||||
case PIX_FMT_MONOBLACK: |
||||
n = (avctx->width + 7) >> 3; |
||||
do_read: |
||||
ptr = p->data[0]; |
||||
linesize = p->linesize[0]; |
||||
if(s->bytestream + n*avctx->height > s->bytestream_end) |
||||
return -1; |
||||
for(i = 0; i < avctx->height; i++) { |
||||
if (!upgrade) |
||||
memcpy(ptr, s->bytestream, n); |
||||
else if (upgrade == 1) { |
||||
unsigned int j, f = (255*128 + s->maxval/2) / s->maxval; |
||||
for (j=0; j<n; j++) |
||||
ptr[j] = (s->bytestream[j] * f + 64) >> 7; |
||||
} else if (upgrade == 2) { |
||||
unsigned int j, v, f = (65535*32768 + s->maxval/2) / s->maxval; |
||||
for (j=0; j<n/2; j++) { |
||||
v = be2me_16(((uint16_t *)s->bytestream)[j]); |
||||
((uint16_t *)ptr)[j] = (v * f + 16384) >> 15; |
||||
} |
||||
} |
||||
s->bytestream += n; |
||||
ptr += linesize; |
||||
} |
||||
break; |
||||
case PIX_FMT_YUV420P: |
||||
{ |
||||
unsigned char *ptr1, *ptr2; |
||||
|
||||
n = avctx->width; |
||||
ptr = p->data[0]; |
||||
linesize = p->linesize[0]; |
||||
if(s->bytestream + n*avctx->height*3/2 > s->bytestream_end) |
||||
return -1; |
||||
for(i = 0; i < avctx->height; i++) { |
||||
memcpy(ptr, s->bytestream, n); |
||||
s->bytestream += n; |
||||
ptr += linesize; |
||||
} |
||||
ptr1 = p->data[1]; |
||||
ptr2 = p->data[2]; |
||||
n >>= 1; |
||||
h = avctx->height >> 1; |
||||
for(i = 0; i < h; i++) { |
||||
memcpy(ptr1, s->bytestream, n); |
||||
s->bytestream += n; |
||||
memcpy(ptr2, s->bytestream, n); |
||||
s->bytestream += n; |
||||
ptr1 += p->linesize[1]; |
||||
ptr2 += p->linesize[2]; |
||||
} |
||||
} |
||||
break; |
||||
case PIX_FMT_RGB32: |
||||
ptr = p->data[0]; |
||||
linesize = p->linesize[0]; |
||||
if(s->bytestream + avctx->width*avctx->height*4 > s->bytestream_end) |
||||
return -1; |
||||
for(i = 0; i < avctx->height; i++) { |
||||
int j, r, g, b, a; |
||||
|
||||
for(j = 0;j < avctx->width; j++) { |
||||
r = *s->bytestream++; |
||||
g = *s->bytestream++; |
||||
b = *s->bytestream++; |
||||
a = *s->bytestream++; |
||||
((uint32_t *)ptr)[j] = (a << 24) | (r << 16) | (g << 8) | b; |
||||
} |
||||
ptr += linesize; |
||||
} |
||||
break; |
||||
} |
||||
*picture= *(AVFrame*)&s->picture; |
||||
*data_size = sizeof(AVPicture); |
||||
|
||||
return s->bytestream - s->bytestream_start; |
||||
} |
||||
|
||||
static int pnm_encode_frame(AVCodecContext *avctx, unsigned char *outbuf, int buf_size, void *data){ |
||||
PNMContext *s = avctx->priv_data; |
||||
AVFrame *pict = data; |
||||
AVFrame * const p= (AVFrame*)&s->picture; |
||||
int i, h, h1, c, n, linesize; |
||||
uint8_t *ptr, *ptr1, *ptr2; |
||||
|
||||
if(buf_size < avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height) + 200){ |
||||
av_log(avctx, AV_LOG_ERROR, "encoded frame too large\n"); |
||||
return -1; |
||||
} |
||||
|
||||
*p = *pict; |
||||
p->pict_type= FF_I_TYPE; |
||||
p->key_frame= 1; |
||||
|
||||
s->bytestream_start= |
||||
s->bytestream= outbuf; |
||||
s->bytestream_end= outbuf+buf_size; |
||||
|
||||
h = avctx->height; |
||||
h1 = h; |
||||
switch(avctx->pix_fmt) { |
||||
case PIX_FMT_MONOWHITE: |
||||
c = '4'; |
||||
n = (avctx->width + 7) >> 3; |
||||
break; |
||||
case PIX_FMT_GRAY8: |
||||
c = '5'; |
||||
n = avctx->width; |
||||
break; |
||||
case PIX_FMT_GRAY16BE: |
||||
c = '5'; |
||||
n = avctx->width * 2; |
||||
break; |
||||
case PIX_FMT_RGB24: |
||||
c = '6'; |
||||
n = avctx->width * 3; |
||||
break; |
||||
case PIX_FMT_YUV420P: |
||||
c = '5'; |
||||
n = avctx->width; |
||||
h1 = (h * 3) / 2; |
||||
break; |
||||
default: |
||||
return -1; |
||||
} |
||||
snprintf(s->bytestream, s->bytestream_end - s->bytestream, |
||||
"P%c\n%d %d\n", |
||||
c, avctx->width, h1); |
||||
s->bytestream += strlen(s->bytestream); |
||||
if (avctx->pix_fmt != PIX_FMT_MONOWHITE) { |
||||
snprintf(s->bytestream, s->bytestream_end - s->bytestream, |
||||
"%d\n", (avctx->pix_fmt != PIX_FMT_GRAY16BE) ? 255 : 65535); |
||||
s->bytestream += strlen(s->bytestream); |
||||
} |
||||
|
||||
ptr = p->data[0]; |
||||
linesize = p->linesize[0]; |
||||
for(i=0;i<h;i++) { |
||||
memcpy(s->bytestream, ptr, n); |
||||
s->bytestream += n; |
||||
ptr += linesize; |
||||
} |
||||
|
||||
if (avctx->pix_fmt == PIX_FMT_YUV420P) { |
||||
h >>= 1; |
||||
n >>= 1; |
||||
ptr1 = p->data[1]; |
||||
ptr2 = p->data[2]; |
||||
for(i=0;i<h;i++) { |
||||
memcpy(s->bytestream, ptr1, n); |
||||
s->bytestream += n; |
||||
memcpy(s->bytestream, ptr2, n); |
||||
s->bytestream += n; |
||||
ptr1 += p->linesize[1]; |
||||
ptr2 += p->linesize[2]; |
||||
} |
||||
} |
||||
return s->bytestream - s->bytestream_start; |
||||
} |
||||
|
||||
static int pam_encode_frame(AVCodecContext *avctx, unsigned char *outbuf, int buf_size, void *data){ |
||||
PNMContext *s = avctx->priv_data; |
||||
AVFrame *pict = data; |
||||
AVFrame * const p= (AVFrame*)&s->picture; |
||||
int i, h, w, n, linesize, depth, maxval; |
||||
const char *tuple_type; |
||||
uint8_t *ptr; |
||||
|
||||
if(buf_size < avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height) + 200){ |
||||
av_log(avctx, AV_LOG_ERROR, "encoded frame too large\n"); |
||||
return -1; |
||||
} |
||||
|
||||
*p = *pict; |
||||
p->pict_type= FF_I_TYPE; |
||||
p->key_frame= 1; |
||||
|
||||
s->bytestream_start= |
||||
s->bytestream= outbuf; |
||||
s->bytestream_end= outbuf+buf_size; |
||||
|
||||
h = avctx->height; |
||||
w = avctx->width; |
||||
switch(avctx->pix_fmt) { |
||||
case PIX_FMT_MONOWHITE: |
||||
n = (w + 7) >> 3; |
||||
depth = 1; |
||||
maxval = 1; |
||||
tuple_type = "BLACKANDWHITE"; |
||||
break; |
||||
case PIX_FMT_GRAY8: |
||||
n = w; |
||||
depth = 1; |
||||
maxval = 255; |
||||
tuple_type = "GRAYSCALE"; |
||||
break; |
||||
case PIX_FMT_RGB24: |
||||
n = w * 3; |
||||
depth = 3; |
||||
maxval = 255; |
||||
tuple_type = "RGB"; |
||||
break; |
||||
case PIX_FMT_RGB32: |
||||
n = w * 4; |
||||
depth = 4; |
||||
maxval = 255; |
||||
tuple_type = "RGB_ALPHA"; |
||||
break; |
||||
default: |
||||
return -1; |
||||
} |
||||
snprintf(s->bytestream, s->bytestream_end - s->bytestream, |
||||
"P7\nWIDTH %d\nHEIGHT %d\nDEPTH %d\nMAXVAL %d\nTUPLETYPE %s\nENDHDR\n", |
||||
w, h, depth, maxval, tuple_type); |
||||
s->bytestream += strlen(s->bytestream); |
||||
|
||||
ptr = p->data[0]; |
||||
linesize = p->linesize[0]; |
||||
|
||||
if (avctx->pix_fmt == PIX_FMT_RGB32) { |
||||
int j; |
||||
unsigned int v; |
||||
|
||||
for(i=0;i<h;i++) { |
||||
for(j=0;j<w;j++) { |
||||
v = ((uint32_t *)ptr)[j]; |
||||
*s->bytestream++ = v >> 16; |
||||
*s->bytestream++ = v >> 8; |
||||
*s->bytestream++ = v; |
||||
*s->bytestream++ = v >> 24; |
||||
} |
||||
ptr += linesize; |
||||
} |
||||
} else { |
||||
for(i=0;i<h;i++) { |
||||
memcpy(s->bytestream, ptr, n); |
||||
s->bytestream += n; |
||||
ptr += linesize; |
||||
} |
||||
} |
||||
return s->bytestream - s->bytestream_start; |
||||
} |
||||
|
||||
#if 0 |
||||
static int pnm_probe(AVProbeData *pd) |
||||
{ |
||||
const char *p = pd->buf; |
||||
if (pd->buf_size >= 8 && |
||||
p[0] == 'P' && |
||||
p[1] >= '4' && p[1] <= '6' && |
||||
pnm_space(p[2]) ) |
||||
return AVPROBE_SCORE_MAX - 1; /* to permit pgmyuv probe */ |
||||
else |
||||
return 0; |
||||
} |
||||
|
||||
static int pgmyuv_probe(AVProbeData *pd) |
||||
{ |
||||
if (match_ext(pd->filename, "pgmyuv")) |
||||
return AVPROBE_SCORE_MAX; |
||||
else |
||||
return 0; |
||||
} |
||||
|
||||
static int pam_probe(AVProbeData *pd) |
||||
{ |
||||
const char *p = pd->buf; |
||||
if (pd->buf_size >= 8 && |
||||
p[0] == 'P' && |
||||
p[1] == '7' && |
||||
p[2] == '\n') |
||||
return AVPROBE_SCORE_MAX; |
||||
else |
||||
return 0; |
||||
} |
||||
#endif |
||||
|
||||
|
||||
#ifdef CONFIG_PGM_ENCODER |
||||
AVCodec pgm_encoder = { |
||||
"pgm", |
||||
CODEC_TYPE_VIDEO, |
||||
CODEC_ID_PGM, |
||||
sizeof(PNMContext), |
||||
common_init, |
||||
pnm_encode_frame, |
||||
NULL, //encode_end,
|
||||
pnm_decode_frame, |
||||
.pix_fmts= (enum PixelFormat[]){PIX_FMT_GRAY8, PIX_FMT_GRAY16BE, -1}, |
||||
}; |
||||
#endif // CONFIG_PGM_ENCODER
|
||||
|
||||
#ifdef CONFIG_PGMYUV_ENCODER |
||||
AVCodec pgmyuv_encoder = { |
||||
"pgmyuv", |
||||
CODEC_TYPE_VIDEO, |
||||
CODEC_ID_PGMYUV, |
||||
sizeof(PNMContext), |
||||
common_init, |
||||
pnm_encode_frame, |
||||
NULL, //encode_end,
|
||||
pnm_decode_frame, |
||||
.pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1}, |
||||
}; |
||||
#endif // CONFIG_PGMYUV_ENCODER
|
||||
|
||||
#ifdef CONFIG_PPM_ENCODER |
||||
AVCodec ppm_encoder = { |
||||
"ppm", |
||||
CODEC_TYPE_VIDEO, |
||||
CODEC_ID_PPM, |
||||
sizeof(PNMContext), |
||||
common_init, |
||||
pnm_encode_frame, |
||||
NULL, //encode_end,
|
||||
pnm_decode_frame, |
||||
.pix_fmts= (enum PixelFormat[]){PIX_FMT_RGB24, -1}, |
||||
}; |
||||
#endif // CONFIG_PPM_ENCODER
|
||||
|
||||
#ifdef CONFIG_PBM_ENCODER |
||||
AVCodec pbm_encoder = { |
||||
"pbm", |
||||
CODEC_TYPE_VIDEO, |
||||
CODEC_ID_PBM, |
||||
sizeof(PNMContext), |
||||
common_init, |
||||
pnm_encode_frame, |
||||
NULL, //encode_end,
|
||||
pnm_decode_frame, |
||||
.pix_fmts= (enum PixelFormat[]){PIX_FMT_MONOWHITE, -1}, |
||||
}; |
||||
#endif // CONFIG_PBM_ENCODER
|
||||
|
||||
#ifdef CONFIG_PAM_ENCODER |
||||
AVCodec pam_encoder = { |
||||
"pam", |
||||
CODEC_TYPE_VIDEO, |
||||
CODEC_ID_PAM, |
||||
sizeof(PNMContext), |
||||
common_init, |
||||
pam_encode_frame, |
||||
NULL, //encode_end,
|
||||
pnm_decode_frame, |
||||
.pix_fmts= (enum PixelFormat[]){PIX_FMT_RGB24, PIX_FMT_RGB32, PIX_FMT_GRAY8, PIX_FMT_MONOWHITE, -1}, |
||||
}; |
||||
#endif // CONFIG_PAM_ENCODER
|
Loading…
Reference in new issue