static int gif_parse_next_image(GifState *s)
{
int ret, code;
for (;;) {
code = bytestream_get_byte(&s->bytestream);
#ifdef DEBUG
dprintf("gif: code=%02x '%c'\n", code, code);
#endif
switch (code) {
case ',':
if (gif_read_image(s) < 0)
return -1;
ret = 0;
goto the_end;
case ';':
/* end of image */
ret = -1;
goto the_end;
case '!':
if (gif_read_extension(s) < 0)
return -1;
break;
case EOF:
default:
/* error or errneous EOF */
ret = -1;
goto the_end;
}
}
the_end:
return ret;
}
static int gif_parse_next_image(GifState *s, int *got_picture)
{
int ret;
*got_picture = sizeof(AVPicture);
while (s->bytestream < s->bytestream_end) {
int code = bytestream_get_byte(&s->bytestream);
av_dlog(s->avctx, "code=%02x '%c'\n", code, code);
switch (code) {
case GIF_IMAGE_SEPARATOR:
return gif_read_image(s);
case GIF_EXTENSION_INTRODUCER:
if ((ret = gif_read_extension(s)) < 0)
return ret;
break;
case GIF_TRAILER:
/* end of image */
*got_picture = 0;
return 0;
default:
/* erroneous block label */
return AVERROR_INVALIDDATA;
}
}
return AVERROR_EOF;
}
static int gif_parse_next_image(GifState *s, AVFrame *frame)
{
while (bytestream2_get_bytes_left(&s->gb) > 0) {
int code = bytestream2_get_byte(&s->gb);
int ret;
av_log(s->avctx, AV_LOG_DEBUG, "code=%02x '%c'\n", code, code);
switch (code) {
case GIF_IMAGE_SEPARATOR:
return gif_read_image(s, frame);
case GIF_EXTENSION_INTRODUCER:
if ((ret = gif_read_extension(s)) < 0)
return ret;
break;
case GIF_TRAILER:
/* end of image */
return AVERROR_EOF;
default:
/* erroneous block label */
return AVERROR_INVALIDDATA;
}
}
return AVERROR_EOF;
}
static int gif_parse_next_image(GifState *s)
{
while (s->bytestream < s->bytestream_end) {
int code = bytestream_get_byte(&s->bytestream);
#ifdef DEBUG
dprintf(s->avctx, "gif: code=%02x '%c'\n", code, code);
#endif
switch (code) {
case ',':
return gif_read_image(s);
case '!':
if (gif_read_extension(s) < 0)
return -1;
break;
case ';':
/* end of image */
default:
/* error or erroneous EOF */
return -1;
}
}
return -1;
}
static int gif_parse_next_image(GifState *s, AVFrame *frame)
{
while (bytestream2_get_bytes_left(&s->gb) > 0) {
int code = bytestream2_get_byte(&s->gb);
int ret;
av_dlog(s->avctx, "gif: code=%02x '%c'\n", code, code);
switch (code) {
case ',':
return gif_read_image(s, frame);
case '!':
if ((ret = gif_read_extension(s)) < 0)
return ret;
break;
case ';':
/* end of image */
default:
/* error or erroneous EOF */
return AVERROR_INVALIDDATA;
}
}
return AVERROR_INVALIDDATA;
}
