static int decode_frame_ilbm(AVCodecContext *avctx,
void *data, int *data_size,
AVPacket *avpkt)
{
IffContext *s = avctx->priv_data;
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
const uint8_t *buf_end = buf+buf_size;
int y, plane;
if (avctx->reget_buffer(avctx, &s->frame) < 0){
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return -1;
}
for(y = 0; y < avctx->height; y++ ) {
uint8_t *row = &s->frame.data[0][ y*s->frame.linesize[0] ];
memset(row, 0, avctx->pix_fmt == PIX_FMT_PAL8 ? avctx->width : (avctx->width * 4));
for (plane = 0; plane < avctx->bits_per_coded_sample && buf < buf_end; plane++) {
if (avctx->pix_fmt == PIX_FMT_PAL8) {
decodeplane8(row, buf, FFMIN(s->planesize, buf_end - buf), avctx->bits_per_coded_sample, plane);
} else { // PIX_FMT_BGR32
decodeplane32(row, buf, FFMIN(s->planesize, buf_end - buf), avctx->bits_per_coded_sample, plane);
}
buf += s->planesize;
}
}
*data_size = sizeof(AVFrame);
*(AVFrame*)data = s->frame;
return buf_size;
}
static int decode_frame_byterun1(AVCodecContext *avctx,
void *data, int *data_size,
AVPacket *avpkt)
{
IffContext *s = avctx->priv_data;
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
const uint8_t *buf_end = buf+buf_size;
int y, plane, x;
if (avctx->reget_buffer(avctx, &s->frame) < 0){
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return -1;
}
if (avctx->codec_tag == MKTAG('I','L','B','M')) { //interleaved
if (avctx->pix_fmt == PIX_FMT_PAL8) {
for(y = 0; y < avctx->height ; y++ ) {
uint8_t *row = &s->frame.data[0][ y*s->frame.linesize[0] ];
memset(row, 0, avctx->width);
for (plane = 0; plane < avctx->bits_per_coded_sample; plane++) {
for(x = 0; x < s->planesize && buf < buf_end; ) {
int8_t value = *buf++;
unsigned length;
if (value >= 0) {
length = value + 1;
memcpy(s->planebuf + x, buf, FFMIN3(length, s->planesize - x, buf_end - buf));
buf += length;
} else if (value > -128) {
length = -value + 1;
memset(s->planebuf + x, *buf++, FFMIN(length, s->planesize - x));
} else { //noop
continue;
}
x += length;
}
decodeplane8(row, s->planebuf, s->planesize, avctx->bits_per_coded_sample, plane);
}
}
} else { //PIX_FMT_BGR32
for(y = 0; y < avctx->height ; y++ ) {
uint8_t *row = &s->frame.data[0][y*s->frame.linesize[0]];
memset(row, 0, avctx->width << 2);
for (plane = 0; plane < avctx->bits_per_coded_sample; plane++) {
for(x = 0; x < s->planesize && buf < buf_end; ) {
int8_t value = *buf++;
unsigned length;
if (value >= 0) {
length = value + 1;
memcpy(s->planebuf + x, buf, FFMIN3(length, s->planesize - x, buf_end - buf));
buf += length;
} else if (value > -128) {
length = -value + 1;
memset(s->planebuf + x, *buf++, FFMIN(length, s->planesize - x));
} else { // noop
continue;
}
x += length;
}
decodeplane32((uint32_t *) row, s->planebuf, s->planesize, avctx->bits_per_coded_sample, plane);
}
}
}
} else {
for(y = 0; y < avctx->height ; y++ ) {
uint8_t *row = &s->frame.data[0][y*s->frame.linesize[0]];
for(x = 0; x < avctx->width && buf < buf_end; ) {
int8_t value = *buf++;
unsigned length;
if (value >= 0) {
length = value + 1;
memcpy(row + x, buf, FFMIN3(length, buf_end - buf, avctx->width - x));
buf += length;
} else if (value > -128) {
length = -value + 1;
memset(row + x, *buf++, FFMIN(length, avctx->width - x));
} else { //noop
continue;
}
x += length;
}
}
}
*data_size = sizeof(AVFrame);
*(AVFrame*)data = s->frame;
return buf_size;
}