static int decode_frame_byterun1(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt) { IffContext *s = avctx->priv_data; const uint8_t *buf = avpkt->size >= 2 ? avpkt->data + AV_RB16(avpkt->data) : NULL; const int buf_size = avpkt->size >= 2 ? avpkt->size - AV_RB16(avpkt->data) : 0; const uint8_t *buf_end = buf+buf_size; int y, plane, res; if ((res = extract_header(avctx, avpkt)) < 0) return res; if (s->init) { if ((res = avctx->reget_buffer(avctx, &s->frame)) < 0) { av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n"); return res; } } else if ((res = avctx->get_buffer(avctx, &s->frame)) < 0) { av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); return res; } else if (avctx->bits_per_coded_sample <= 8 && avctx->pix_fmt != PIX_FMT_GRAY8) { if ((res = ff_cmap_read_palette(avctx, (uint32_t*)s->frame.data[1])) < 0) return res; } s->init = 1; if (avctx->codec_tag == MKTAG('I','L','B','M')) { //interleaved if (avctx->pix_fmt == PIX_FMT_PAL8 || avctx->pix_fmt == PIX_FMT_GRAY8) { 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 < s->bpp; plane++) { buf += decode_byterun(s->planebuf, s->planesize, buf, buf_end); decodeplane8(row, s->planebuf, s->planesize, plane); } } } else if (s->ham) { // HAM to PIX_FMT_BGR32 for (y = 0; y < avctx->height ; y++) { uint8_t *row = &s->frame.data[0][y*s->frame.linesize[0]]; memset(s->ham_buf, 0, avctx->width); for (plane = 0; plane < s->bpp; plane++) { buf += decode_byterun(s->planebuf, s->planesize, buf, buf_end); decodeplane8(s->ham_buf, s->planebuf, s->planesize, plane); } decode_ham_plane32((uint32_t *) row, s->ham_buf, s->ham_palbuf, s->planesize); } } 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 < s->bpp; plane++) { buf += decode_byterun(s->planebuf, s->planesize, buf, buf_end); decodeplane32((uint32_t *) row, s->planebuf, s->planesize, plane); } } } } else if (avctx->pix_fmt == PIX_FMT_PAL8 || avctx->pix_fmt == PIX_FMT_GRAY8) { // IFF-PBM for(y = 0; y < avctx->height ; y++ ) { uint8_t *row = &s->frame.data[0][y*s->frame.linesize[0]]; buf += decode_byterun(row, avctx->width, buf, buf_end); } } else { // IFF-PBM: HAM to PIX_FMT_BGR32 for (y = 0; y < avctx->height ; y++) { uint8_t *row = &s->frame.data[0][y*s->frame.linesize[0]]; buf += decode_byterun(s->ham_buf, avctx->width, buf, buf_end); decode_ham_plane32((uint32_t *) row, s->ham_buf, s->ham_palbuf, avctx->width); } } *data_size = sizeof(AVFrame); *(AVFrame*)data = s->frame; return buf_size; }