MKSCALE16(scale16be, AV_RB16, AV_WB16) MKSCALE16(scale16le, AV_RL16, AV_WL16) static int raw_decode(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt) { const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt); RawVideoContext *context = avctx->priv_data; const uint8_t *buf = avpkt->data; int buf_size = avpkt->size; int avpkt_stride = avpkt->size / avctx->height; int linesize_align = 4; int res, len; int need_copy; AVFrame *frame = data; if ((avctx->bits_per_coded_sample == 8 || avctx->bits_per_coded_sample == 4 || avctx->bits_per_coded_sample == 2 || avctx->bits_per_coded_sample == 1) && avctx->pix_fmt == AV_PIX_FMT_PAL8 && (!avctx->codec_tag || avctx->codec_tag == MKTAG('r','a','w',' '))) { context->is_1_2_4_8_bpp = 1; context->frame_size = av_image_get_buffer_size(avctx->pix_fmt, FFALIGN(avctx->width, 16), avctx->height, 1); } else { context->is_lt_16bpp = av_get_bits_per_pixel(desc) == 16 && avctx->bits_per_coded_sample && avctx->bits_per_coded_sample < 16; context->frame_size = av_image_get_buffer_size(avctx->pix_fmt, avctx->width, avctx->height, 1); } if (context->frame_size < 0) return context->frame_size; need_copy = !avpkt->buf || context->is_1_2_4_8_bpp || context->is_yuv2 || context->is_lt_16bpp; frame->pict_type = AV_PICTURE_TYPE_I; frame->key_frame = 1; res = ff_decode_frame_props(avctx, frame); if (res < 0) return res; av_frame_set_pkt_pos (frame, avctx->internal->pkt->pos); av_frame_set_pkt_duration(frame, avctx->internal->pkt->duration); if (context->tff >= 0) { frame->interlaced_frame = 1; frame->top_field_first = context->tff; } if ((res = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0) return res; if (need_copy) frame->buf[0] = av_buffer_alloc(FFMAX(context->frame_size, buf_size)); else frame->buf[0] = av_buffer_ref(avpkt->buf); if (!frame->buf[0]) return AVERROR(ENOMEM); // 1 bpp in mov, and 2, 4 and 8 bpp in avi/mov if (context->is_1_2_4_8_bpp) { int i, j, row_pix = 0; uint8_t *dst = frame->buf[0]->data; buf_size = context->frame_size - AVPALETTE_SIZE; if (avctx->bits_per_coded_sample == 8) { for (i = 0, j = 0; j < buf_size && i<avpkt->size; i++, j++) { dst[j] = buf[i]; row_pix++; if (row_pix == avctx->width) { i += avpkt_stride - (i % avpkt_stride) - 1; j += 16 - (j % 16) - 1; row_pix = 0; } } } else if (avctx->bits_per_coded_sample == 4) { for (i = 0, j = 0; 2 * j + 1 < buf_size && i<avpkt->size; i++, j++) { dst[2 * j + 0] = buf[i] >> 4; dst[2 * j + 1] = buf[i] & 15; row_pix += 2; if (row_pix >= avctx->width) { i += avpkt_stride - (i % avpkt_stride) - 1; j += 8 - (j % 8) - 1; row_pix = 0; } } } else if (avctx->bits_per_coded_sample == 2) { for (i = 0, j = 0; 4 * j + 3 < buf_size && i<avpkt->size; i++, j++) { dst[4 * j + 0] = buf[i] >> 6; dst[4 * j + 1] = buf[i] >> 4 & 3; dst[4 * j + 2] = buf[i] >> 2 & 3; dst[4 * j + 3] = buf[i] & 3; row_pix += 4; if (row_pix >= avctx->width) { i += avpkt_stride - (i % avpkt_stride) - 1; j += 4 - (j % 4) - 1; row_pix = 0; } } } else { av_assert0(avctx->bits_per_coded_sample == 1); for (i = 0, j = 0; 8 * j + 7 < buf_size && i<avpkt->size; i++, j++) { dst[8 * j + 0] = buf[i] >> 7; dst[8 * j + 1] = buf[i] >> 6 & 1; dst[8 * j + 2] = buf[i] >> 5 & 1; dst[8 * j + 3] = buf[i] >> 4 & 1; dst[8 * j + 4] = buf[i] >> 3 & 1; dst[8 * j + 5] = buf[i] >> 2 & 1; dst[8 * j + 6] = buf[i] >> 1 & 1; dst[8 * j + 7] = buf[i] & 1; row_pix += 8; if (row_pix >= avctx->width) { i += avpkt_stride - (i % avpkt_stride) - 1; j += 2 - (j % 2) - 1; row_pix = 0; } } } linesize_align = 16; buf = dst; } else if (context->is_lt_16bpp) { uint8_t *dst = frame->buf[0]->data; int packed = (avctx->codec_tag & 0xFFFFFF) == MKTAG('B','I','T', 0); int swap = avctx->codec_tag >> 24; if (packed && swap) { av_fast_padded_malloc(&context->bitstream_buf, &context->bitstream_buf_size, buf_size); if (!context->bitstream_buf) return AVERROR(ENOMEM); if (swap == 16) context->bbdsp.bswap16_buf(context->bitstream_buf, (const uint16_t*)buf, buf_size / 2); else if (swap == 32) context->bbdsp.bswap_buf(context->bitstream_buf, (const uint32_t*)buf, buf_size / 4); else return AVERROR_INVALIDDATA; buf = context->bitstream_buf; } if (desc->flags & AV_PIX_FMT_FLAG_BE) scale16be(avctx, dst, buf, buf_size, packed); else scale16le(avctx, dst, buf, buf_size, packed); buf = dst; } else if (need_copy) { memcpy(frame->buf[0]->data, buf, buf_size); buf = frame->buf[0]->data; } if (avctx->codec_tag == MKTAG('A', 'V', '1', 'x') || avctx->codec_tag == MKTAG('A', 'V', 'u', 'p')) buf += buf_size - context->frame_size; len = context->frame_size - (avctx->pix_fmt==AV_PIX_FMT_PAL8 ? AVPALETTE_SIZE : 0); if (buf_size < len && ((avctx->codec_tag & 0xFFFFFF) != MKTAG('B','I','T', 0) || !need_copy)) { av_log(avctx, AV_LOG_ERROR, "Invalid buffer size, packet size %d < expected frame_size %d\n", buf_size, len); av_buffer_unref(&frame->buf[0]); return AVERROR(EINVAL); } if ((res = av_image_fill_arrays(frame->data, frame->linesize, buf, avctx->pix_fmt, avctx->width, avctx->height, 1)) < 0) { av_buffer_unref(&frame->buf[0]); return res; } if (avctx->pix_fmt == AV_PIX_FMT_PAL8) { const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE, NULL); if (pal) { av_buffer_unref(&context->palette); context->palette = av_buffer_alloc(AVPALETTE_SIZE); if (!context->palette) { av_buffer_unref(&frame->buf[0]); return AVERROR(ENOMEM); } memcpy(context->palette->data, pal, AVPALETTE_SIZE); frame->palette_has_changed = 1; } } if ((avctx->pix_fmt==AV_PIX_FMT_BGR24 || avctx->pix_fmt==AV_PIX_FMT_GRAY8 || avctx->pix_fmt==AV_PIX_FMT_RGB555LE || avctx->pix_fmt==AV_PIX_FMT_RGB555BE || avctx->pix_fmt==AV_PIX_FMT_RGB565LE || avctx->pix_fmt==AV_PIX_FMT_MONOWHITE || avctx->pix_fmt==AV_PIX_FMT_PAL8) && FFALIGN(frame->linesize[0], linesize_align) * avctx->height <= buf_size) frame->linesize[0] = FFALIGN(frame->linesize[0], linesize_align); if (avctx->pix_fmt == AV_PIX_FMT_NV12 && avctx->codec_tag == MKTAG('N', 'V', '1', '2') && FFALIGN(frame->linesize[0], linesize_align) * avctx->height + FFALIGN(frame->linesize[1], linesize_align) * ((avctx->height + 1) / 2) <= buf_size) { int la0 = FFALIGN(frame->linesize[0], linesize_align); frame->data[1] += (la0 - frame->linesize[0]) * avctx->height; frame->linesize[0] = la0; frame->linesize[1] = FFALIGN(frame->linesize[1], linesize_align); } if ((avctx->pix_fmt == AV_PIX_FMT_PAL8 && buf_size < context->frame_size) || (desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL)) { frame->buf[1] = av_buffer_ref(context->palette); if (!frame->buf[1]) { av_buffer_unref(&frame->buf[0]); return AVERROR(ENOMEM); } frame->data[1] = frame->buf[1]->data; } if (avctx->pix_fmt == AV_PIX_FMT_BGR24 && ((frame->linesize[0] + 3) & ~3) * avctx->height <= buf_size) frame->linesize[0] = (frame->linesize[0] + 3) & ~3; if (context->flip) flip(avctx, frame); if (avctx->codec_tag == MKTAG('Y', 'V', '1', '2') || avctx->codec_tag == MKTAG('Y', 'V', '1', '6') || avctx->codec_tag == MKTAG('Y', 'V', '2', '4') || avctx->codec_tag == MKTAG('Y', 'V', 'U', '9')) FFSWAP(uint8_t *, frame->data[1], frame->data[2]); if (avctx->codec_tag == AV_RL32("I420") && (avctx->width+1)*(avctx->height+1) * 3/2 == buf_size) { frame->data[1] = frame->data[1] + (avctx->width+1)*(avctx->height+1) -avctx->width*avctx->height; frame->data[2] = frame->data[2] + ((avctx->width+1)*(avctx->height+1) -avctx->width*avctx->height)*5/4; } if (avctx->codec_tag == AV_RL32("yuv2") && avctx->pix_fmt == AV_PIX_FMT_YUYV422) { int x, y; uint8_t *line = frame->data[0]; for (y = 0; y < avctx->height; y++) { for (x = 0; x < avctx->width; x++) line[2 * x + 1] ^= 0x80; line += frame->linesize[0]; } } if (avctx->field_order > AV_FIELD_PROGRESSIVE) { /* we have interlaced material flagged in container */ frame->interlaced_frame = 1; if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB) frame->top_field_first = 1; } *got_frame = 1; return buf_size; }