[FFmpeg-cvslog] Indeo 4 decoder
Kostya Shishkov
git at videolan.org
Thu Dec 29 02:01:04 CET 2011
ffmpeg | branch: master | Kostya Shishkov <kostya.shishkov at gmail.com> | Tue Dec 6 14:50:32 2011 +0100| [adfe0c942e71545f003f9c4d148fbf5d220681bc] | committer: Kostya Shishkov
Indeo 4 decoder
Signed-off-by: Kostya Shishkov <kostya.shishkov at gmail.com>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=adfe0c942e71545f003f9c4d148fbf5d220681bc
---
Changelog | 1 +
doc/general.texi | 1 +
libavcodec/Makefile | 1 +
libavcodec/allcodecs.c | 1 +
libavcodec/indeo4.c | 823 +++++++++++++++++++++++++++++++++++++++++++++++
libavcodec/indeo4data.h | 350 ++++++++++++++++++++
libavcodec/ivi_dsp.c | 149 +++++++++-
libavcodec/ivi_dsp.h | 39 +++-
libavcodec/version.h | 2 +-
9 files changed, 1364 insertions(+), 3 deletions(-)
diff --git a/Changelog b/Changelog
index 263e6d9..8176297 100644
--- a/Changelog
+++ b/Changelog
@@ -111,6 +111,7 @@ easier to use. The changes are:
- v410 QuickTime uncompressed 4:4:4 10-bit encoder and decoder
- OpenMG Audio muxer
- Simple segmenting muxer
+- Indeo 4 decoder
version 0.7:
diff --git a/doc/general.texi b/doc/general.texi
index 74f3cb6..313d73f 100644
--- a/doc/general.texi
+++ b/doc/general.texi
@@ -491,6 +491,7 @@ following image formats are supported:
@item Intel H.263 @tab @tab X
@item Intel Indeo 2 @tab @tab X
@item Intel Indeo 3 @tab @tab X
+ at item Intel Indeo 4 @tab @tab X
@item Intel Indeo 5 @tab @tab X
@item Interplay C93 @tab @tab X
@tab Used in the game Cyberia from Interplay.
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index b426129..741df91 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -191,6 +191,7 @@ OBJS-$(CONFIG_IFF_ILBM_DECODER) += iff.o
OBJS-$(CONFIG_IMC_DECODER) += imc.o
OBJS-$(CONFIG_INDEO2_DECODER) += indeo2.o
OBJS-$(CONFIG_INDEO3_DECODER) += indeo3.o
+OBJS-$(CONFIG_INDEO4_DECODER) += indeo4.o ivi_common.o ivi_dsp.o
OBJS-$(CONFIG_INDEO5_DECODER) += indeo5.o ivi_common.o ivi_dsp.o
OBJS-$(CONFIG_INTERPLAY_DPCM_DECODER) += dpcm.o
OBJS-$(CONFIG_INTERPLAY_VIDEO_DECODER) += interplayvideo.o
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index 8a09b90..3980982 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -128,6 +128,7 @@ void avcodec_register_all(void)
REGISTER_DECODER (IFF_ILBM, iff_ilbm);
REGISTER_DECODER (INDEO2, indeo2);
REGISTER_DECODER (INDEO3, indeo3);
+ REGISTER_DECODER (INDEO4, indeo4);
REGISTER_DECODER (INDEO5, indeo5);
REGISTER_DECODER (INTERPLAY_VIDEO, interplay_video);
REGISTER_ENCDEC (JPEGLS, jpegls);
diff --git a/libavcodec/indeo4.c b/libavcodec/indeo4.c
new file mode 100644
index 0000000..8f6d2ea
--- /dev/null
+++ b/libavcodec/indeo4.c
@@ -0,0 +1,823 @@
+/*
+ * Indeo Video Interactive v4 compatible decoder
+ * Copyright (c) 2009-2011 Maxim Poliakovski
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * Indeo Video Interactive version 4 decoder
+ *
+ * Indeo 4 data is usually transported within .avi or .mov files.
+ * Known FOURCCs: 'IV41'
+ */
+
+#define BITSTREAM_READER_LE
+#include "avcodec.h"
+#include "get_bits.h"
+#include "dsputil.h"
+#include "ivi_dsp.h"
+#include "ivi_common.h"
+#include "indeo4data.h"
+
+#define IVI4_STREAM_ANALYSER 0
+#define IVI4_DEBUG_CHECKSUM 0
+
+/**
+ * Indeo 4 frame types.
+ */
+enum {
+ FRAMETYPE_INTRA = 0,
+ FRAMETYPE_BIDIR1 = 1, ///< bidirectional frame
+ FRAMETYPE_INTER = 2, ///< non-droppable P-frame
+ FRAMETYPE_BIDIR = 3, ///< bidirectional frame
+ FRAMETYPE_INTER_NOREF = 4, ///< droppable P-frame
+ FRAMETYPE_NULL_FIRST = 5, ///< empty frame with no data
+ FRAMETYPE_NULL_LAST = 6 ///< empty frame with no data
+};
+
+#define IVI4_PIC_SIZE_ESC 7
+
+
+typedef struct {
+ GetBitContext gb;
+ AVFrame frame;
+ RVMapDesc rvmap_tabs[9]; ///< local corrected copy of the static rvmap tables
+
+ uint32_t frame_num;
+ int frame_type;
+ int prev_frame_type; ///< frame type of the previous frame
+ uint32_t data_size; ///< size of the frame data in bytes from picture header
+ int is_scalable;
+ int transp_status; ///< transparency mode status: 1 - enabled
+
+ IVIPicConfig pic_conf;
+ IVIPlaneDesc planes[3]; ///< color planes
+
+ int buf_switch; ///< used to switch between three buffers
+ int dst_buf; ///< buffer index for the currently decoded frame
+ int ref_buf; ///< inter frame reference buffer index
+
+ IVIHuffTab mb_vlc; ///< current macroblock table descriptor
+ IVIHuffTab blk_vlc; ///< current block table descriptor
+
+ uint16_t checksum; ///< frame checksum
+
+ uint8_t rvmap_sel;
+ uint8_t in_imf;
+ uint8_t in_q; ///< flag for explicitly stored quantiser delta
+ uint8_t pic_glob_quant;
+ uint8_t unknown1;
+
+#if IVI4_STREAM_ANALYSER
+ uint8_t has_b_frames;
+ uint8_t has_transp;
+ uint8_t uses_tiling;
+ uint8_t uses_haar;
+ uint8_t uses_fullpel;
+#endif
+} IVI4DecContext;
+
+
+struct {
+ InvTransformPtr *inv_trans;
+ DCTransformPtr *dc_trans;
+ int is_2d_trans;
+} transforms[18] = {
+ { ff_ivi_inverse_haar_8x8, ff_ivi_dc_haar_2d, 1 },
+ { NULL, NULL, 0 }, /* inverse Haar 8x1 */
+ { NULL, NULL, 0 }, /* inverse Haar 1x8 */
+ { ff_ivi_put_pixels_8x8, ff_ivi_put_dc_pixel_8x8, 1 },
+ { ff_ivi_inverse_slant_8x8, ff_ivi_dc_slant_2d, 1 },
+ { ff_ivi_row_slant8, ff_ivi_dc_row_slant, 1 },
+ { ff_ivi_col_slant8, ff_ivi_dc_col_slant, 1 },
+ { NULL, NULL, 0 }, /* inverse DCT 8x8 */
+ { NULL, NULL, 0 }, /* inverse DCT 8x1 */
+ { NULL, NULL, 0 }, /* inverse DCT 1x8 */
+ { NULL, NULL, 0 }, /* inverse Haar 4x4 */
+ { ff_ivi_inverse_slant_4x4, ff_ivi_dc_slant_2d, 1 },
+ { NULL, NULL, 0 }, /* no transform 4x4 */
+ { NULL, NULL, 0 }, /* inverse Haar 1x4 */
+ { NULL, NULL, 0 }, /* inverse Haar 4x1 */
+ { NULL, NULL, 0 }, /* inverse slant 1x4 */
+ { NULL, NULL, 0 }, /* inverse slant 4x1 */
+ { NULL, NULL, 0 }, /* inverse DCT 4x4 */
+};
+
+/**
+ * Decode subdivision of a plane.
+ * This is a simplified version that checks for two supported subdivisions:
+ * - 1 wavelet band per plane, size factor 1:1, code pattern: 3
+ * - 4 wavelet bands per plane, size factor 1:4, code pattern: 2,3,3,3,3
+ * Anything else is either unsupported or corrupt.
+ *
+ * @param[in,out] gb the GetBit context
+ * @return number of wavelet bands or 0 on error
+ */
+static int decode_plane_subdivision(GetBitContext *gb)
+{
+ int i;
+
+ switch (get_bits(gb, 2)) {
+ case 3:
+ return 1;
+ case 2:
+ for (i = 0; i < 4; i++)
+ if (get_bits(gb, 2) != 3)
+ return 0;
+ return 4;
+ default:
+ return 0;
+ }
+}
+
+static inline int scale_tile_size(int def_size, int size_factor)
+{
+ return (size_factor == 15 ? def_size : (size_factor + 1) << 5);
+}
+
+/**
+ * Decode Indeo 4 picture header.
+ *
+ * @param[in,out] ctx pointer to the decoder context
+ * @param[in] avctx pointer to the AVCodecContext
+ * @return result code: 0 = OK, negative number = error
+ */
+static int decode_pic_hdr(IVI4DecContext *ctx, AVCodecContext *avctx)
+{
+ int pic_size_indx, val, i, p;
+ IVIPicConfig pic_conf;
+
+ if (get_bits(&ctx->gb, 18) != 0x3FFF8) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid picture start code!\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ ctx->prev_frame_type = ctx->frame_type;
+ ctx->frame_type = get_bits(&ctx->gb, 3);
+ if (ctx->frame_type == 7) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid frame type: %d\n", ctx->frame_type);
+ return AVERROR_INVALIDDATA;
+ }
+
+#if IVI4_STREAM_ANALYSER
+ if ( ctx->frame_type == FRAMETYPE_BIDIR1
+ || ctx->frame_type == FRAMETYPE_BIDIR)
+ ctx->has_b_frames = 1;
+#endif
+
+ ctx->transp_status = get_bits1(&ctx->gb);
+#if IVI4_STREAM_ANALYSER
+ if (ctx->transp_status) {
+ ctx->has_transp = 1;
+ }
+#endif
+
+ /* unknown bit: Mac decoder ignores this bit, XANIM returns error */
+ if (get_bits1(&ctx->gb)) {
+ av_log(avctx, AV_LOG_ERROR, "Sync bit is set!\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ ctx->data_size = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 24) : 0;
+
+ /* null frames don't contain anything else so we just return */
+ if (ctx->frame_type >= FRAMETYPE_NULL_FIRST) {
+ av_dlog(avctx, "Null frame encountered!\n");
+ return 0;
+ }
+
+ /* Check key lock status. If enabled - ignore lock word. */
+ /* Usually we have to prompt the user for the password, but */
+ /* we don't do that because Indeo 4 videos can be decoded anyway */
+ if (get_bits1(&ctx->gb)) {
+ skip_bits_long(&ctx->gb, 32);
+ av_dlog(avctx, "Password-protected clip!\n");
+ }
+
+ pic_size_indx = get_bits(&ctx->gb, 3);
+ if (pic_size_indx == IVI4_PIC_SIZE_ESC) {
+ pic_conf.pic_height = get_bits(&ctx->gb, 16);
+ pic_conf.pic_width = get_bits(&ctx->gb, 16);
+ } else {
+ pic_conf.pic_height = ivi4_common_pic_sizes[pic_size_indx * 2 + 1];
+ pic_conf.pic_width = ivi4_common_pic_sizes[pic_size_indx * 2 ];
+ }
+
+ /* Decode tile dimensions. */
+ if (get_bits1(&ctx->gb)) {
+ pic_conf.tile_height = scale_tile_size(pic_conf.pic_height, get_bits(&ctx->gb, 4));
+ pic_conf.tile_width = scale_tile_size(pic_conf.pic_width, get_bits(&ctx->gb, 4));
+#if IVI4_STREAM_ANALYSER
+ ctx->uses_tiling = 1;
+#endif
+ } else {
+ pic_conf.tile_height = pic_conf.pic_height;
+ pic_conf.tile_width = pic_conf.pic_width;
+ }
+
+ /* Decode chroma subsampling. We support only 4:4 aka YVU9. */
+ if (get_bits(&ctx->gb, 2)) {
+ av_log(avctx, AV_LOG_ERROR, "Only YVU9 picture format is supported!\n");
+ return AVERROR_INVALIDDATA;
+ }
+ pic_conf.chroma_height = (pic_conf.pic_height + 3) >> 2;
+ pic_conf.chroma_width = (pic_conf.pic_width + 3) >> 2;
+
+ /* decode subdivision of the planes */
+ pic_conf.luma_bands = decode_plane_subdivision(&ctx->gb);
+ if (pic_conf.luma_bands)
+ pic_conf.chroma_bands = decode_plane_subdivision(&ctx->gb);
+ ctx->is_scalable = pic_conf.luma_bands != 1 || pic_conf.chroma_bands != 1;
+ if (ctx->is_scalable && (pic_conf.luma_bands != 4 || pic_conf.chroma_bands != 1)) {
+ av_log(avctx, AV_LOG_ERROR, "Scalability: unsupported subdivision! Luma bands: %d, chroma bands: %d\n",
+ pic_conf.luma_bands, pic_conf.chroma_bands);
+ return AVERROR_INVALIDDATA;
+ }
+
+ /* check if picture layout was changed and reallocate buffers */
+ if (ivi_pic_config_cmp(&pic_conf, &ctx->pic_conf)) {
+ if (ff_ivi_init_planes(ctx->planes, &pic_conf)) {
+ av_log(avctx, AV_LOG_ERROR, "Couldn't reallocate color planes!\n");
+ return AVERROR(ENOMEM);
+ }
+
+ ctx->pic_conf = pic_conf;
+
+ /* set default macroblock/block dimensions */
+ for (p = 0; p <= 2; p++) {
+ for (i = 0; i < (!p ? pic_conf.luma_bands : pic_conf.chroma_bands); i++) {
+ ctx->planes[p].bands[i].mb_size = !p ? (!ctx->is_scalable ? 16 : 8) : 4;
+ ctx->planes[p].bands[i].blk_size = !p ? 8 : 4;
+ }
+ }
+
+ if (ff_ivi_init_tiles(ctx->planes, ctx->pic_conf.tile_width,
+ ctx->pic_conf.tile_height)) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Couldn't reallocate internal structures!\n");
+ return AVERROR(ENOMEM);
+ }
+ }
+
+ ctx->frame_num = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 20) : 0;
+
+ /* skip decTimeEst field if present */
+ if (get_bits1(&ctx->gb))
+ skip_bits(&ctx->gb, 8);
+
+ /* decode macroblock and block huffman codebooks */
+ if (ff_ivi_dec_huff_desc(&ctx->gb, get_bits1(&ctx->gb), IVI_MB_HUFF, &ctx->mb_vlc, avctx) ||
+ ff_ivi_dec_huff_desc(&ctx->gb, get_bits1(&ctx->gb), IVI_BLK_HUFF, &ctx->blk_vlc, avctx))
+ return AVERROR_INVALIDDATA;
+
+ ctx->rvmap_sel = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 8;
+
+ ctx->in_imf = get_bits1(&ctx->gb);
+ ctx->in_q = get_bits1(&ctx->gb);
+
+ ctx->pic_glob_quant = get_bits(&ctx->gb, 5);
+
+ /* TODO: ignore this parameter if unused */
+ ctx->unknown1 = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 0;
+
+ ctx->checksum = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 16) : 0;
+
+ /* skip picture header extension if any */
+ while (get_bits1(&ctx->gb)) {
+ av_dlog(avctx, "Pic hdr extension encountered!\n");
+ val = get_bits(&ctx->gb, 8);
+ }
+
+ if (get_bits1(&ctx->gb)) {
+ av_log(avctx, AV_LOG_ERROR, "Bad blocks bits encountered!\n");
+ }
+
+ align_get_bits(&ctx->gb);
+
+ return 0;
+}
+
+
+/**
+ * Decode Indeo 4 band header.
+ *
+ * @param[in,out] ctx pointer to the decoder context
+ * @param[in,out] band pointer to the band descriptor
+ * @param[in] avctx pointer to the AVCodecContext
+ * @return result code: 0 = OK, negative number = error
+ */
+static int decode_band_hdr(IVI4DecContext *ctx, IVIBandDesc *band,
+ AVCodecContext *avctx)
+{
+ int plane, band_num, hdr_size, indx, transform_id, scan_indx;
+ int i;
+
+ plane = get_bits(&ctx->gb, 2);
+ band_num = get_bits(&ctx->gb, 4);
+ if (band->plane != plane || band->band_num != band_num) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid band header sequence!\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ band->is_empty = get_bits1(&ctx->gb);
+ if (!band->is_empty) {
+ hdr_size = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 16) : 4;
+
+ band->is_halfpel = get_bits(&ctx->gb, 2);
+ if (band->is_halfpel >= 2) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid/unsupported mv resolution: %d!\n",
+ band->is_halfpel);
+ return AVERROR_INVALIDDATA;
+ }
+#if IVI4_STREAM_ANALYSER
+ if (!band->is_halfpel)
+ ctx->uses_fullpel = 1;
+#endif
+
+ band->checksum_present = get_bits1(&ctx->gb);
+ if (band->checksum_present)
+ band->checksum = get_bits(&ctx->gb, 16);
+
+ indx = get_bits(&ctx->gb, 2);
+ if (indx == 3) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid block size!\n");
+ return AVERROR_INVALIDDATA;
+ }
+ band->mb_size = 16 >> indx;
+ band->blk_size = 8 >> (indx >> 1);
+
+ band->inherit_mv = get_bits1(&ctx->gb);
+ band->inherit_qdelta = get_bits1(&ctx->gb);
+
+ band->glob_quant = get_bits(&ctx->gb, 5);
+
+ if (!get_bits1(&ctx->gb) || ctx->frame_type == FRAMETYPE_INTRA) {
+ transform_id = get_bits(&ctx->gb, 5);
+ if (!transforms[transform_id].inv_trans) {
+ av_log_ask_for_sample(avctx, "Unimplemented transform: %d!\n", transform_id);
+ return AVERROR_PATCHWELCOME;
+ }
+ if ((transform_id >= 7 && transform_id <= 9) ||
+ transform_id == 17) {
+ av_log_ask_for_sample(avctx, "DCT transform not supported yet!\n");
+ return AVERROR_PATCHWELCOME;
+ }
+
+#if IVI4_STREAM_ANALYSER
+ if ((transform_id >= 0 && transform_id <= 2) || transform_id == 10)
+ ctx->uses_haar = 1;
+#endif
+
+ band->inv_transform = transforms[transform_id].inv_trans;
+ band->dc_transform = transforms[transform_id].dc_trans;
+ band->is_2d_trans = transforms[transform_id].is_2d_trans;
+
+ scan_indx = get_bits(&ctx->gb, 4);
+ if (scan_indx == 15) {
+ av_log(avctx, AV_LOG_ERROR, "Custom scan pattern encountered!\n");
+ return AVERROR_INVALIDDATA;
+ }
+ band->scan = scan_index_to_tab[scan_indx];
+
+ band->quant_mat = get_bits(&ctx->gb, 5);
+ if (band->quant_mat == 31) {
+ av_log(avctx, AV_LOG_ERROR, "Custom quant matrix encountered!\n");
+ return AVERROR_INVALIDDATA;
+ }
+ }
+
+ /* decode block huffman codebook */
+ if (ff_ivi_dec_huff_desc(&ctx->gb, get_bits1(&ctx->gb), IVI_BLK_HUFF,
+ &band->blk_vlc, avctx))
+ return AVERROR_INVALIDDATA;
+
+ /* select appropriate rvmap table for this band */
+ band->rvmap_sel = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 8;
+
+ /* decode rvmap probability corrections if any */
+ band->num_corr = 0; /* there is no corrections */
+ if (get_bits1(&ctx->gb)) {
+ band->num_corr = get_bits(&ctx->gb, 8); /* get number of correction pairs */
+ if (band->num_corr > 61) {
+ av_log(avctx, AV_LOG_ERROR, "Too many corrections: %d\n",
+ band->num_corr);
+ return AVERROR_INVALIDDATA;
+ }
+
+ /* read correction pairs */
+ for (i = 0; i < band->num_corr * 2; i++)
+ band->corr[i] = get_bits(&ctx->gb, 8);
+ }
+ }
+
+ if (band->blk_size == 8) {
+ band->intra_base = &ivi4_quant_8x8_intra[quant_index_to_tab[band->quant_mat]][0];
+ band->inter_base = &ivi4_quant_8x8_inter[quant_index_to_tab[band->quant_mat]][0];
+ } else {
+ band->intra_base = &ivi4_quant_4x4_intra[quant_index_to_tab[band->quant_mat]][0];
+ band->inter_base = &ivi4_quant_4x4_inter[quant_index_to_tab[band->quant_mat]][0];
+ }
+
+ /* Indeo 4 doesn't use scale tables */
+ band->intra_scale = NULL;
+ band->inter_scale = NULL;
+
+ align_get_bits(&ctx->gb);
+
+ return 0;
+}
+
+
+/**
+ * Decode information (block type, cbp, quant delta, motion vector)
+ * for all macroblocks in the current tile.
+ *
+ * @param[in,out] ctx pointer to the decoder context
+ * @param[in,out] band pointer to the band descriptor
+ * @param[in,out] tile pointer to the tile descriptor
+ * @param[in] avctx pointer to the AVCodecContext
+ * @return result code: 0 = OK, negative number = error
+ */
+static int decode_mb_info(IVI4DecContext *ctx, IVIBandDesc *band,
+ IVITile *tile, AVCodecContext *avctx)
+{
+ int x, y, mv_x, mv_y, mv_delta, offs, mb_offset, blks_per_mb,
+ mv_scale, mb_type_bits;
+ IVIMbInfo *mb, *ref_mb;
+ int row_offset = band->mb_size * band->pitch;
+
+ mb = tile->mbs;
+ ref_mb = tile->ref_mbs;
+ offs = tile->ypos * band->pitch + tile->xpos;
+
+ blks_per_mb = band->mb_size != band->blk_size ? 4 : 1;
+ mb_type_bits = ctx->frame_type == FRAMETYPE_BIDIR ? 2 : 1;
+
+ /* scale factor for motion vectors */
+ mv_scale = (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3);
+ mv_x = mv_y = 0;
+
+ for (y = tile->ypos; y < tile->ypos + tile->height; y += band->mb_size) {
+ mb_offset = offs;
+
+ for (x = tile->xpos; x < tile->xpos + tile->width; x += band->mb_size) {
+ mb->xpos = x;
+ mb->ypos = y;
+ mb->buf_offs = mb_offset;
+
+ if (get_bits1(&ctx->gb)) {
+ if (ctx->frame_type == FRAMETYPE_INTRA) {
+ av_log(avctx, AV_LOG_ERROR, "Empty macroblock in an INTRA picture!\n");
+ return AVERROR_INVALIDDATA;
+ }
+ mb->type = 1; /* empty macroblocks are always INTER */
+ mb->cbp = 0; /* all blocks are empty */
+
+ mb->q_delta = 0;
+ if (!band->plane && !band->band_num && ctx->in_q) {
+ mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
+ IVI_VLC_BITS, 1);
+ mb->q_delta = IVI_TOSIGNED(mb->q_delta);
+ }
+
+ mb->mv_x = mb->mv_y = 0; /* no motion vector coded */
+ if (band->inherit_mv) {
+ /* motion vector inheritance */
+ if (mv_scale) {
+ mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
+ mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
+ } else {
+ mb->mv_x = ref_mb->mv_x;
+ mb->mv_y = ref_mb->mv_y;
+ }
+ }
+ } else {
+ if (band->inherit_mv) {
+ mb->type = ref_mb->type; /* copy mb_type from corresponding reference mb */
+ } else if (ctx->frame_type == FRAMETYPE_INTRA) {
+ mb->type = 0; /* mb_type is always INTRA for intra-frames */
+ } else {
+ mb->type = get_bits(&ctx->gb, mb_type_bits);
+ }
+
+ mb->cbp = get_bits(&ctx->gb, blks_per_mb);
+
+ mb->q_delta = 0;
+ if (band->inherit_qdelta) {
+ if (ref_mb) mb->q_delta = ref_mb->q_delta;
+ } else if (mb->cbp || (!band->plane && !band->band_num &&
+ ctx->in_q)) {
+ mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
+ IVI_VLC_BITS, 1);
+ mb->q_delta = IVI_TOSIGNED(mb->q_delta);
+ }
+
+ if (!mb->type) {
+ mb->mv_x = mb->mv_y = 0; /* there is no motion vector in intra-macroblocks */
+ } else {
+ if (band->inherit_mv) {
+ /* motion vector inheritance */
+ if (mv_scale) {
+ mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
+ mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
+ } else {
+ mb->mv_x = ref_mb->mv_x;
+ mb->mv_y = ref_mb->mv_y;
+ }
+ } else {
+ /* decode motion vector deltas */
+ mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
+ IVI_VLC_BITS, 1);
+ mv_y += IVI_TOSIGNED(mv_delta);
+ mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
+ IVI_VLC_BITS, 1);
+ mv_x += IVI_TOSIGNED(mv_delta);
+ mb->mv_x = mv_x;
+ mb->mv_y = mv_y;
+ }
+ }
+ }
+
+ mb++;
+ if (ref_mb)
+ ref_mb++;
+ mb_offset += band->mb_size;
+ }
+
+ offs += row_offset;
+ }
+
+ align_get_bits(&ctx->gb);
+
+ return 0;
+}
+
+
+/**
+ * Decode an Indeo 4 band.
+ *
+ * @param[in,out] ctx pointer to the decoder context
+ * @param[in,out] band pointer to the band descriptor
+ * @param[in] avctx pointer to the AVCodecContext
+ * @return result code: 0 = OK, negative number = error
+ */
+static int decode_band(IVI4DecContext *ctx, int plane_num,
+ IVIBandDesc *band, AVCodecContext *avctx)
+{
+ int result, i, t, pos, idx1, idx2;
+ IVITile *tile;
+
+ band->buf = band->bufs[ctx->dst_buf];
+ band->ref_buf = band->bufs[ctx->ref_buf];
+
+ result = decode_band_hdr(ctx, band, avctx);
+ if (result) {
+ av_log(avctx, AV_LOG_ERROR, "Error decoding band header\n");
+ return result;
+ }
+
+ if (band->is_empty) {
+ av_log(avctx, AV_LOG_ERROR, "Empty band encountered!\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ band->rv_map = &ctx->rvmap_tabs[band->rvmap_sel];
+
+ /* apply corrections to the selected rvmap table if present */
+ for (i = 0; i < band->num_corr; i++) {
+ idx1 = band->corr[i * 2];
+ idx2 = band->corr[i * 2 + 1];
+ FFSWAP(uint8_t, band->rv_map->runtab[idx1], band->rv_map->runtab[idx2]);
+ FFSWAP(int16_t, band->rv_map->valtab[idx1], band->rv_map->valtab[idx2]);
+ }
+
+ pos = get_bits_count(&ctx->gb);
+
+ for (t = 0; t < band->num_tiles; t++) {
+ tile = &band->tiles[t];
+
+ tile->is_empty = get_bits1(&ctx->gb);
+ if (tile->is_empty) {
+ ff_ivi_process_empty_tile(avctx, band, tile,
+ (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3));
+ av_dlog(avctx, "Empty tile encountered!\n");
+ } else {
+ tile->data_size = ff_ivi_dec_tile_data_size(&ctx->gb);
+ if (!tile->data_size) {
+ av_log(avctx, AV_LOG_ERROR, "Tile data size is zero!\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ result = decode_mb_info(ctx, band, tile, avctx);
+ if (result < 0)
+ break;
+
+ result = ff_ivi_decode_blocks(&ctx->gb, band, tile);
+ if (result < 0 || ((get_bits_count(&ctx->gb) - pos) >> 3) != tile->data_size) {
+ av_log(avctx, AV_LOG_ERROR, "Corrupted tile data encountered!\n");
+ break;
+ }
+
+ pos += tile->data_size << 3; // skip to next tile
+ }
+ }
+
+ /* restore the selected rvmap table by applying its corrections in reverse order */
+ for (i = band->num_corr - 1; i >= 0; i--) {
+ idx1 = band->corr[i * 2];
+ idx2 = band->corr[i * 2 + 1];
+ FFSWAP(uint8_t, band->rv_map->runtab[idx1], band->rv_map->runtab[idx2]);
+ FFSWAP(int16_t, band->rv_map->valtab[idx1], band->rv_map->valtab[idx2]);
+ }
+
+#if defined(DEBUG) && IVI4_DEBUG_CHECKSUM
+ if (band->checksum_present) {
+ uint16_t chksum = ivi_calc_band_checksum(band);
+ if (chksum != band->checksum) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Band checksum mismatch! Plane %d, band %d, received: %x, calculated: %x\n",
+ band->plane, band->band_num, band->checksum, chksum);
+ }
+ }
+#endif
+
+ align_get_bits(&ctx->gb);
+
+ return 0;
+}
+
+
+static av_cold int decode_init(AVCodecContext *avctx)
+{
+ IVI4DecContext *ctx = avctx->priv_data;
+
+ ff_ivi_init_static_vlc();
+
+ /* copy rvmap tables in our context so we can apply changes to them */
+ memcpy(ctx->rvmap_tabs, ff_ivi_rvmap_tabs, sizeof(ff_ivi_rvmap_tabs));
+
+ /* Force allocation of the internal buffers */
+ /* during picture header decoding. */
+ ctx->pic_conf.pic_width = 0;
+ ctx->pic_conf.pic_height = 0;
+
+ avctx->pix_fmt = PIX_FMT_YUV410P;
+
+ return 0;
+}
+
+
+/**
+ * Rearrange decoding and reference buffers.
+ *
+ * @param[in,out] ctx pointer to the decoder context
+ */
+static void switch_buffers(IVI4DecContext *ctx)
+{
+ switch (ctx->prev_frame_type) {
+ case FRAMETYPE_INTRA:
+ case FRAMETYPE_INTER:
+ ctx->buf_switch ^= 1;
+ ctx->dst_buf = ctx->buf_switch;
+ ctx->ref_buf = ctx->buf_switch ^ 1;
+ break;
+ case FRAMETYPE_INTER_NOREF:
+ break;
+ }
+
+ switch (ctx->frame_type) {
+ case FRAMETYPE_INTRA:
+ ctx->buf_switch = 0;
+ /* FALLTHROUGH */
+ case FRAMETYPE_INTER:
+ ctx->dst_buf = ctx->buf_switch;
+ ctx->ref_buf = ctx->buf_switch ^ 1;
+ break;
+ case FRAMETYPE_INTER_NOREF:
+ case FRAMETYPE_NULL_FIRST:
+ case FRAMETYPE_NULL_LAST:
+ break;
+ }
+}
+
+
+static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
+ AVPacket *avpkt)
+{
+ IVI4DecContext *ctx = avctx->priv_data;
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
+ int result, p, b;
+
+ init_get_bits(&ctx->gb, buf, buf_size * 8);
+
+ result = decode_pic_hdr(ctx, avctx);
+ if (result) {
+ av_log(avctx, AV_LOG_ERROR, "Error decoding picture header\n");
+ return result;
+ }
+
+ switch_buffers(ctx);
+
+ if (ctx->frame_type < FRAMETYPE_NULL_FIRST) {
+ for (p = 0; p < 3; p++) {
+ for (b = 0; b < ctx->planes[p].num_bands; b++) {
+ result = decode_band(ctx, p, &ctx->planes[p].bands[b], avctx);
+ if (result) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Error decoding band: %d, plane: %d\n", b, p);
+ return result;
+ }
+ }
+ }
+ }
+
+ /* If the bidirectional mode is enabled, next I and the following P frame will */
+ /* be sent together. Unfortunately the approach below seems to be the only way */
+ /* to handle the B-frames mode. That's exactly the same Intel decoders do. */
+ if (ctx->frame_type == FRAMETYPE_INTRA) {
+ while (get_bits(&ctx->gb, 8)); // skip version string
+ skip_bits_long(&ctx->gb, 64); // skip padding, TODO: implement correct 8-bytes alignment
+ if (get_bits_left(&ctx->gb) > 18 && show_bits(&ctx->gb, 18) == 0x3FFF8)
+ av_log(avctx, AV_LOG_ERROR, "Buffer contains IP frames!\n");
+ }
+
+ if (ctx->frame.data[0])
+ avctx->release_buffer(avctx, &ctx->frame);
+
+ ctx->frame.reference = 0;
+ if ((result = avctx->get_buffer(avctx, &ctx->frame)) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ return result;
+ }
+
+ if (ctx->is_scalable) {
+ ff_ivi_recompose_haar(&ctx->planes[0], ctx->frame.data[0], ctx->frame.linesize[0], 4);
+ } else {
+ ff_ivi_output_plane(&ctx->planes[0], ctx->frame.data[0], ctx->frame.linesize[0]);
+ }
+
+ ff_ivi_output_plane(&ctx->planes[2], ctx->frame.data[1], ctx->frame.linesize[1]);
+ ff_ivi_output_plane(&ctx->planes[1], ctx->frame.data[2], ctx->frame.linesize[2]);
+
+ *data_size = sizeof(AVFrame);
+ *(AVFrame*)data = ctx->frame;
+
+ return buf_size;
+}
+
+
+static av_cold int decode_close(AVCodecContext *avctx)
+{
+ IVI4DecContext *ctx = avctx->priv_data;
+
+ ff_ivi_free_buffers(&ctx->planes[0]);
+
+ if (ctx->frame.data[0])
+ avctx->release_buffer(avctx, &ctx->frame);
+
+#if IVI4_STREAM_ANALYSER
+ if (ctx->is_scalable)
+ av_log(avctx, AV_LOG_ERROR, "This video uses scalability mode!\n");
+ if (ctx->uses_tiling)
+ av_log(avctx, AV_LOG_ERROR, "This video uses local decoding!\n");
+ if (ctx->has_b_frames)
+ av_log(avctx, AV_LOG_ERROR, "This video contains B-frames!\n");
+ if (ctx->has_transp)
+ av_log(avctx, AV_LOG_ERROR, "Transparency mode is enabled!\n");
+ if (ctx->uses_haar)
+ av_log(avctx, AV_LOG_ERROR, "This video uses Haar transform!\n");
+ if (ctx->uses_fullpel)
+ av_log(avctx, AV_LOG_ERROR, "This video uses fullpel motion vectors!\n");
+#endif
+
+ return 0;
+}
+
+
+AVCodec ff_indeo4_decoder = {
+ .name = "indeo4",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_INDEO4,
+ .priv_data_size = sizeof(IVI4DecContext),
+ .init = decode_init,
+ .close = decode_close,
+ .decode = decode_frame,
+ .long_name = NULL_IF_CONFIG_SMALL("Intel Indeo Video Interactive 4"),
+};
diff --git a/libavcodec/indeo4data.h b/libavcodec/indeo4data.h
new file mode 100644
index 0000000..affd9c6
--- /dev/null
+++ b/libavcodec/indeo4data.h
@@ -0,0 +1,350 @@
+/*
+ * Indeo Video Interactive 4 compatible decoder
+ * Copyright (c) 2009-2010 Maxim Poliakovski
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * This file contains data needed for the Indeo 4 decoder.
+ */
+
+#ifndef AVCODEC_INDEO4DATA_H
+#define AVCODEC_INDEO4DATA_H
+
+#include <stdint.h>
+#include "dsputil.h"
+#include "ivi_common.h"
+
+/**
+ * standard picture dimensions
+ */
+static const uint16_t ivi4_common_pic_sizes[14] = {
+ 640, 480, 320, 240, 160, 120, 704, 480, 352, 240, 352, 288, 176, 144
+};
+
+/**
+ * Indeo 4 8x8 scan (zigzag) patterns
+ */
+static const uint8_t ivi4_alternate_scan_8x8[64] = {
+ 0, 8, 1, 9, 16, 24, 2, 3, 17, 25, 10, 11, 32, 40, 48, 56,
+ 4, 5, 6, 7, 33, 41, 49, 57, 18, 19, 26, 27, 12, 13, 14, 15,
+ 34, 35, 43, 42, 50, 51, 59, 58, 20, 21, 22, 23, 31, 30, 29, 28,
+ 36, 37, 38, 39, 47, 46, 45, 44, 52, 53, 54, 55, 63, 62, 61, 60
+};
+
+static const uint8_t ivi4_alternate_scan_4x4[16] = {
+ 0, 1, 4, 5, 8, 12, 2, 3, 9, 13, 6, 7, 10, 11, 14, 15
+};
+
+static const uint8_t ivi4_vertical_scan_4x4[16] = {
+ 0, 4, 8, 12, 1, 5, 9, 13, 2, 6, 10, 14, 3, 7, 11, 15
+};
+
+static const uint8_t ivi4_horizontal_scan_4x4[16] = {
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
+};
+
+static const uint8_t *scan_index_to_tab[15] = {
+ // for 8x8 transforms
+ ff_zigzag_direct,
+ ivi4_alternate_scan_8x8,
+ ff_ivi_horizontal_scan_8x8,
+ ff_ivi_vertical_scan_8x8,
+ ff_zigzag_direct,
+
+ // for 4x4 transforms
+ ff_ivi_direct_scan_4x4,
+ ivi4_alternate_scan_4x4,
+ ivi4_vertical_scan_4x4,
+ ivi4_horizontal_scan_4x4,
+ ff_ivi_direct_scan_4x4,
+
+ // TODO: check if those are needed
+ ff_ivi_horizontal_scan_8x8,
+ ff_ivi_horizontal_scan_8x8,
+ ff_ivi_horizontal_scan_8x8,
+ ff_ivi_horizontal_scan_8x8,
+ ff_ivi_horizontal_scan_8x8
+};
+
+/**
+ * Indeo 4 dequant tables
+ */
+static uint16_t ivi4_quant_8x8_intra[9][64] = {
+ {
+ 43, 342, 385, 470, 555, 555, 598, 726,
+ 342, 342, 470, 513, 555, 598, 726, 769,
+ 385, 470, 555, 555, 598, 726, 726, 811,
+ 470, 470, 555, 555, 598, 726, 769, 854,
+ 470, 555, 555, 598, 683, 726, 854, 1025,
+ 555, 555, 598, 683, 726, 854, 1025, 1153,
+ 555, 555, 598, 726, 811, 982, 1195, 1451,
+ 555, 598, 726, 811, 982, 1195, 1451, 1793
+ },
+ {
+ 86, 1195, 2390, 2390, 4865, 4865, 4865, 4865,
+ 1195, 1195, 2390, 2390, 4865, 4865, 4865, 4865,
+ 2390, 2390, 4865, 4865, 6827, 6827, 6827, 6827,
+ 2390, 2390, 4865, 4865, 6827, 6827, 6827, 6827,
+ 4865, 4865, 6827, 6827, 6827, 6827, 6827, 6827,
+ 4865, 4865, 6827, 6827, 6827, 6827, 6827, 6827,
+ 4865, 4865, 6827, 6827, 6827, 6827, 6827, 6827,
+ 4865, 4865, 6827, 6827, 6827, 6827, 6827, 6827
+ },
+ {
+ 235, 1067, 1195, 1323, 1451, 1579, 1707, 1835,
+ 235, 1067, 1195, 1323, 1451, 1579, 1707, 1835,
+ 235, 1067, 1195, 1323, 1451, 1579, 1707, 1835,
+ 235, 1067, 1195, 1323, 1451, 1579, 1707, 1835,
+ 235, 1067, 1195, 1323, 1451, 1579, 1707, 1835,
+ 235, 1067, 1195, 1323, 1451, 1579, 1707, 1835,
+ 235, 1067, 1195, 1323, 1451, 1579, 1707, 1835,
+ 235, 1067, 1195, 1323, 1451, 1579, 1707, 1835
+ },
+ {
+ 1707, 1707, 3414, 3414, 3414, 3414, 3414, 3414,
+ 1707, 1707, 3414, 3414, 3414, 3414, 3414, 3414,
+ 1707, 1707, 3414, 3414, 3414, 3414, 3414, 3414,
+ 1707, 1707, 3414, 3414, 3414, 3414, 3414, 3414,
+ 1707, 1707, 3414, 3414, 3414, 3414, 3414, 3414,
+ 1707, 1707, 3414, 3414, 3414, 3414, 3414, 3414,
+ 1707, 1707, 3414, 3414, 3414, 3414, 3414, 3414,
+ 1707, 1707, 3414, 3414, 3414, 3414, 3414, 3414
+ },
+ {
+ 897, 897, 897, 897, 897, 897, 897, 897,
+ 1067, 1067, 1067, 1067, 1067, 1067, 1067, 1067,
+ 1238, 1238, 1238, 1238, 1238, 1238, 1238, 1238,
+ 1409, 1409, 1409, 1409, 1409, 1409, 1409, 1409,
+ 1579, 1579, 1579, 1579, 1579, 1579, 1579, 1579,
+ 1750, 1750, 1750, 1750, 1750, 1750, 1750, 1750,
+ 1921, 1921, 1921, 1921, 1921, 1921, 1921, 1921,
+ 2091, 2091, 2091, 2091, 2091, 2091, 2091, 2091
+ },
+ {
+ 1707, 1707, 1707, 1707, 1707, 1707, 1707, 1707,
+ 1707, 1707, 1707, 1707, 1707, 1707, 1707, 1707,
+ 3414, 3414, 3414, 3414, 3414, 3414, 3414, 3414,
+ 3414, 3414, 3414, 3414, 3414, 3414, 3414, 3414,
+ 3414, 3414, 3414, 3414, 3414, 3414, 3414, 3414,
+ 3414, 3414, 3414, 3414, 3414, 3414, 3414, 3414,
+ 3414, 3414, 3414, 3414, 3414, 3414, 3414, 3414,
+ 3414, 3414, 3414, 3414, 3414, 3414, 3414, 3414
+ },
+ {
+ 2390, 2390, 2390, 2390, 2390, 2390, 2390, 2390,
+ 2390, 2390, 2390, 2390, 2390, 2390, 2390, 2390,
+ 2390, 2390, 2390, 2390, 2390, 2390, 2390, 2390,
+ 2390, 2390, 2390, 2390, 2390, 2390, 2390, 2390,
+ 2390, 2390, 2390, 2390, 2390, 2390, 2390, 2390,
+ 2390, 2390, 2390, 2390, 2390, 2390, 2390, 2390,
+ 2390, 2390, 2390, 2390, 2390, 2390, 2390, 2390,
+ 2390, 2390, 2390, 2390, 2390, 2390, 2390, 2390
+ },
+ {
+ 22, 171, 214, 257, 257, 299, 299, 342,
+ 171, 171, 257, 257, 299, 299, 342, 385,
+ 214, 257, 257, 299, 299, 342, 342, 385,
+ 257, 257, 257, 299, 299, 342, 385, 427,
+ 257, 257, 299, 299, 342, 385, 427, 513,
+ 257, 299, 299, 342, 385, 427, 513, 598,
+ 299, 299, 299, 385, 385, 470, 598, 726,
+ 299, 299, 385, 385, 470, 598, 726, 897
+ },
+ {
+ 86, 598, 1195, 1195, 2390, 2390, 2390, 2390,
+ 598, 598, 1195, 1195, 2390, 2390, 2390, 2390,
+ 1195, 1195, 2390, 2390, 3414, 3414, 3414, 3414,
+ 1195, 1195, 2390, 2390, 3414, 3414, 3414, 3414,
+ 2390, 2390, 3414, 3414, 3414, 3414, 3414, 3414,
+ 2390, 2390, 3414, 3414, 3414, 3414, 3414, 3414,
+ 2390, 2390, 3414, 3414, 3414, 3414, 3414, 3414,
+ 2390, 2390, 3414, 3414, 3414, 3414, 3414, 3414
+ }
+};
+
+static uint16_t ivi4_quant_8x8_inter[9][64] = {
+ {
+ 427, 427, 470, 427, 427, 427, 470, 470,
+ 427, 427, 470, 427, 427, 427, 470, 470,
+ 470, 470, 470, 470, 470, 470, 470, 470,
+ 427, 427, 470, 470, 427, 427, 470, 470,
+ 427, 427, 470, 427, 427, 427, 470, 470,
+ 427, 427, 470, 427, 427, 427, 470, 470,
+ 470, 470, 470, 470, 470, 470, 470, 470,
+ 470, 470, 470, 470, 470, 470, 470, 470
+ },
+ {
+ 1707, 1707, 2433, 2433, 3414, 3414, 3414, 3414,
+ 1707, 1707, 2433, 2433, 3414, 3414, 3414, 3414,
+ 2433, 2433, 3414, 3414, 4822, 4822, 4822, 4822,
+ 2433, 2433, 3414, 3414, 4822, 4822, 4822, 4822,
+ 3414, 3414, 4822, 4822, 3414, 3414, 3414, 3414,
+ 3414, 3414, 4822, 4822, 3414, 3414, 3414, 3414,
+ 3414, 3414, 4822, 4822, 3414, 3414, 3414, 3414,
+ 3414, 3414, 4822, 4822, 3414, 3414, 3414, 3414
+ },
+ {
+ 1195, 1195, 1281, 1238, 1195, 1195, 1281, 1281,
+ 1195, 1195, 1281, 1238, 1195, 1195, 1281, 1281,
+ 1195, 1195, 1281, 1238, 1195, 1195, 1281, 1281,
+ 1195, 1195, 1281, 1238, 1195, 1195, 1281, 1281,
+ 1195, 1195, 1281, 1238, 1195, 1195, 1281, 1281,
+ 1195, 1195, 1281, 1238, 1195, 1195, 1281, 1281,
+ 1195, 1195, 1281, 1238, 1195, 1195, 1281, 1281,
+ 1195, 1195, 1281, 1238, 1195, 1195, 1281, 1281
+ },
+ {
+ 2433, 2433, 3414, 3414, 2433, 2433, 2433, 2433,
+ 2433, 2433, 3414, 3414, 2433, 2433, 2433, 2433,
+ 2433, 2433, 3414, 3414, 2433, 2433, 2433, 2433,
+ 2433, 2433, 3414, 3414, 2433, 2433, 2433, 2433,
+ 2433, 2433, 3414, 3414, 2433, 2433, 2433, 2433,
+ 2433, 2433, 3414, 3414, 2433, 2433, 2433, 2433,
+ 2433, 2433, 3414, 3414, 2433, 2433, 2433, 2433,
+ 2433, 2433, 3414, 3414, 2433, 2433, 2433, 2433
+ },
+ {
+ 1195, 1195, 1195, 1195, 1195, 1195, 1195, 1195,
+ 1195, 1195, 1195, 1195, 1195, 1195, 1195, 1195,
+ 1281, 1281, 1281, 1281, 1281, 1281, 1281, 1281,
+ 1238, 1238, 1238, 1238, 1238, 1238, 1238, 1238,
+ 1195, 1195, 1195, 1195, 1195, 1195, 1195, 1195,
+ 1195, 1195, 1195, 1195, 1195, 1195, 1195, 1195,
+ 1281, 1281, 1281, 1281, 1281, 1281, 1281, 1281,
+ 1281, 1281, 1281, 1281, 1281, 1281, 1281, 1281
+ },
+ {
+ 2433, 2433, 2433, 2433, 2433, 2433, 2433, 2433,
+ 2433, 2433, 2433, 2433, 2433, 2433, 2433, 2433,
+ 3414, 3414, 3414, 3414, 3414, 3414, 3414, 3414,
+ 3414, 3414, 3414, 3414, 3414, 3414, 3414, 3414,
+ 2433, 2433, 2433, 2433, 2433, 2433, 2433, 2433,
+ 2433, 2433, 2433, 2433, 2433, 2433, 2433, 2433,
+ 2433, 2433, 2433, 2433, 2433, 2433, 2433, 2433,
+ 2433, 2433, 2433, 2433, 2433, 2433, 2433, 2433
+ },
+ {
+ 1707, 1707, 1707, 1707, 1707, 1707, 1707, 1707,
+ 1707, 1707, 1707, 1707, 1707, 1707, 1707, 1707,
+ 1707, 1707, 1707, 1707, 1707, 1707, 1707, 1707,
+ 1707, 1707, 1707, 1707, 1707, 1707, 1707, 1707,
+ 1707, 1707, 1707, 1707, 1707, 1707, 1707, 1707,
+ 1707, 1707, 1707, 1707, 1707, 1707, 1707, 1707,
+ 1707, 1707, 1707, 1707, 1707, 1707, 1707, 1707,
+ 1707, 1707, 1707, 1707, 1707, 1707, 1707, 1707
+ },
+ {
+ 86, 171, 171, 214, 214, 214, 214, 257,
+ 171, 171, 214, 214, 214, 214, 257, 257,
+ 171, 214, 214, 214, 214, 257, 257, 257,
+ 214, 214, 214, 214, 257, 257, 257, 299,
+ 214, 214, 214, 257, 257, 257, 299, 299,
+ 214, 214, 257, 257, 257, 299, 299, 299,
+ 214, 257, 257, 257, 299, 299, 299, 342,
+ 257, 257, 257, 299, 299, 299, 342, 342
+ },
+ {
+ 854, 854, 1195, 1195, 1707, 1707, 1707, 1707,
+ 854, 854, 1195, 1195, 1707, 1707, 1707, 1707,
+ 1195, 1195, 1707, 1707, 2390, 2390, 2390, 2390,
+ 1195, 1195, 1707, 1707, 2390, 2390, 2390, 2390,
+ 1707, 1707, 2390, 2390, 1707, 1707, 1707, 1707,
+ 1707, 1707, 2390, 2390, 1707, 1707, 1707, 1707,
+ 1707, 1707, 2390, 2390, 1707, 1707, 1707, 1707,
+ 1707, 1707, 2390, 2390, 1707, 1707, 1707, 1707
+ }
+};
+
+static uint16_t ivi4_quant_4x4_intra[5][16] = {
+ {
+ 22, 214, 257, 299,
+ 214, 257, 299, 342,
+ 257, 299, 342, 427,
+ 299, 342, 427, 513
+ },
+ {
+ 129, 1025, 1451, 1451,
+ 1025, 1025, 1451, 1451,
+ 1451, 1451, 2049, 2049,
+ 1451, 1451, 2049, 2049
+ },
+ {
+ 43, 171, 171, 171,
+ 43, 171, 171, 171,
+ 43, 171, 171, 171,
+ 43, 171, 171, 171
+ },
+ {
+ 43, 43, 43, 43,
+ 171, 171, 171, 171,
+ 171, 171, 171, 171,
+ 171, 171, 171, 171
+ },
+ {
+ 43, 43, 43, 43,
+ 43, 43, 43, 43,
+ 43, 43, 43, 43,
+ 43, 43, 43, 43
+ }
+};
+
+static uint16_t ivi4_quant_4x4_inter[5][16] = {
+ {
+ 107, 214, 257, 299,
+ 214, 257, 299, 299,
+ 257, 299, 299, 342,
+ 299, 299, 342, 342
+ },
+ {
+ 513, 1025, 1238, 1238,
+ 1025, 1025, 1238, 1238,
+ 1238, 1238, 1451, 1451,
+ 1238, 1238, 1451, 1451
+ },
+ {
+ 43, 171, 171, 171,
+ 43, 171, 171, 171,
+ 43, 171, 171, 171,
+ 43, 171, 171, 171
+ },
+ {
+ 43, 43, 43, 43,
+ 171, 171, 171, 171,
+ 171, 171, 171, 171,
+ 171, 171, 171, 171
+ },
+ {
+ 43, 43, 43, 43,
+ 43, 43, 43, 43,
+ 43, 43, 43, 43,
+ 43, 43, 43, 43
+ }
+};
+
+/**
+ * Table for mapping quant matrix index from the bitstream
+ * into internal quant table number.
+ */
+static uint8_t quant_index_to_tab[22] = {
+ 0, 1, 0, 2, 1, 3, 0, 4, 1, 5, 0, 1, 6, 7, 8, // for 8x8 quant matrixes
+ 0, 1, 2, 2, 3, 3, 4 // for 4x4 quant matrixes
+};
+
+#endif /* AVCODEC_INDEO4DATA_H */
diff --git a/libavcodec/ivi_dsp.c b/libavcodec/ivi_dsp.c
index 6b62dc8..caad843 100644
--- a/libavcodec/ivi_dsp.c
+++ b/libavcodec/ivi_dsp.c
@@ -1,7 +1,7 @@
/*
* DSP functions for Indeo Video Interactive codecs (Indeo4 and Indeo5)
*
- * Copyright (c) 2009 Maxim Poliakovski
+ * Copyright (c) 2009-2011 Maxim Poliakovski
*
* This file is part of Libav.
*
@@ -178,6 +178,153 @@ void ff_ivi_recompose53(const IVIPlaneDesc *plane, uint8_t *dst,
}
}
+void ff_ivi_recompose_haar(const IVIPlaneDesc *plane, uint8_t *dst,
+ const int dst_pitch, const int num_bands)
+{
+ int x, y, indx, b0, b1, b2, b3, p0, p1, p2, p3;
+ const IDWTELEM *b0_ptr, *b1_ptr, *b2_ptr, *b3_ptr;
+ int32_t pitch;
+
+ /* all bands should have the same pitch */
+ pitch = plane->bands[0].pitch;
+
+ /* get pointers to the wavelet bands */
+ b0_ptr = plane->bands[0].buf;
+ b1_ptr = plane->bands[1].buf;
+ b2_ptr = plane->bands[2].buf;
+ b3_ptr = plane->bands[3].buf;
+
+ for (y = 0; y < plane->height; y += 2) {
+ for (x = 0, indx = 0; x < plane->width; x += 2, indx++) {
+ /* load coefficients */
+ b0 = b0_ptr[indx]; //should be: b0 = (num_bands > 0) ? b0_ptr[indx] : 0;
+ b1 = b1_ptr[indx]; //should be: b1 = (num_bands > 1) ? b1_ptr[indx] : 0;
+ b2 = b2_ptr[indx]; //should be: b2 = (num_bands > 2) ? b2_ptr[indx] : 0;
+ b3 = b3_ptr[indx]; //should be: b3 = (num_bands > 3) ? b3_ptr[indx] : 0;
+
+ /* haar wavelet recomposition */
+ p0 = (b0 + b1 + b2 + b3 + 2) >> 2;
+ p1 = (b0 + b1 - b2 - b3 + 2) >> 2;
+ p2 = (b0 - b1 + b2 - b3 + 2) >> 2;
+ p3 = (b0 - b1 - b2 + b3 + 2) >> 2;
+
+ /* bias, convert and output four pixels */
+ dst[x] = av_clip_uint8(p0 + 128);
+ dst[x + 1] = av_clip_uint8(p1 + 128);
+ dst[dst_pitch + x] = av_clip_uint8(p2 + 128);
+ dst[dst_pitch + x + 1] = av_clip_uint8(p3 + 128);
+ }// for x
+
+ dst += dst_pitch << 1;
+
+ b0_ptr += pitch;
+ b1_ptr += pitch;
+ b2_ptr += pitch;
+ b3_ptr += pitch;
+ }// for y
+}
+
+/** butterfly operation for the inverse Haar transform */
+#define IVI_HAAR_BFLY(s1, s2, o1, o2, t) \
+ t = (s1 - s2) >> 1;\
+ o1 = (s1 + s2) >> 1;\
+ o2 = t;\
+
+/** inverse 8-point Haar transform */
+#define INV_HAAR8(s1, s5, s3, s7, s2, s4, s6, s8,\
+ d1, d2, d3, d4, d5, d6, d7, d8,\
+ t0, t1, t2, t3, t4, t5, t6, t7, t8) {\
+ t1 = s1 << 1; t5 = s5 << 1;\
+ IVI_HAAR_BFLY(t1, t5, t1, t5, t0); IVI_HAAR_BFLY(t1, s3, t1, t3, t0);\
+ IVI_HAAR_BFLY(t5, s7, t5, t7, t0); IVI_HAAR_BFLY(t1, s2, t1, t2, t0);\
+ IVI_HAAR_BFLY(t3, s4, t3, t4, t0); IVI_HAAR_BFLY(t5, s6, t5, t6, t0);\
+ IVI_HAAR_BFLY(t7, s8, t7, t8, t0);\
+ d1 = COMPENSATE(t1);\
+ d2 = COMPENSATE(t2);\
+ d3 = COMPENSATE(t3);\
+ d4 = COMPENSATE(t4);\
+ d5 = COMPENSATE(t5);\
+ d6 = COMPENSATE(t6);\
+ d7 = COMPENSATE(t7);\
+ d8 = COMPENSATE(t8); }
+
+/** inverse 4-point Haar transform */
+#define INV_HAAR4(s1, s3, s5, s7) {\
+ HAAR_BFLY(s1, s5); HAAR_BFLY(s1, s3); HAAR_BFLY(s5, s7);\
+ s1 = COMPENSATE(s1);\
+ s3 = COMPENSATE(s3);\
+ s5 = COMPENSATE(s5);\
+ s7 = COMPENSATE(s7); }
+
+void ff_ivi_inverse_haar_8x8(const int32_t *in, int16_t *out, uint32_t pitch,
+ const uint8_t *flags)
+{
+ int i, shift, sp1, sp2, sp3, sp4;
+ const int32_t *src;
+ int32_t *dst;
+ int tmp[64];
+ int t0, t1, t2, t3, t4, t5, t6, t7, t8;
+
+ /* apply the InvHaar8 to all columns */
+#define COMPENSATE(x) (x)
+ src = in;
+ dst = tmp;
+ for (i = 0; i < 8; i++) {
+ if (flags[i]) {
+ /* pre-scaling */
+ shift = !(i & 4);
+ sp1 = src[ 0] << shift;
+ sp2 = src[ 8] << shift;
+ sp3 = src[16] << shift;
+ sp4 = src[24] << shift;
+ INV_HAAR8( sp1, sp2, sp3, sp4,
+ src[32], src[40], src[48], src[56],
+ dst[ 0], dst[ 8], dst[16], dst[24],
+ dst[32], dst[40], dst[48], dst[56],
+ t0, t1, t2, t3, t4, t5, t6, t7, t8);
+ } else
+ dst[ 0] = dst[ 8] = dst[16] = dst[24] =
+ dst[32] = dst[40] = dst[48] = dst[56] = 0;
+
+ src++;
+ dst++;
+ }
+#undef COMPENSATE
+
+ /* apply the InvHaar8 to all rows */
+#define COMPENSATE(x) (x)
+ src = tmp;
+ for (i = 0; i < 8; i++) {
+ if ( !src[0] && !src[1] && !src[2] && !src[3]
+ && !src[4] && !src[5] && !src[6] && !src[7]) {
+ memset(out, 0, 8 * sizeof(out[0]));
+ } else {
+ INV_HAAR8(src[0], src[1], src[2], src[3],
+ src[4], src[5], src[6], src[7],
+ out[0], out[1], out[2], out[3],
+ out[4], out[5], out[6], out[7],
+ t0, t1, t2, t3, t4, t5, t6, t7, t8);
+ }
+ src += 8;
+ out += pitch;
+ }
+#undef COMPENSATE
+}
+
+void ff_ivi_dc_haar_2d(const int32_t *in, int16_t *out, uint32_t pitch,
+ int blk_size)
+{
+ int x, y;
+ int16_t dc_coeff;
+
+ dc_coeff = (*in + 0) >> 3;
+
+ for (y = 0; y < blk_size; out += pitch, y++) {
+ for (x = 0; x < blk_size; x++)
+ out[x] = dc_coeff;
+ }
+}
+
/** butterfly operation for the inverse slant transform */
#define IVI_SLANT_BFLY(s1, s2, o1, o2, t) \
t = s1 - s2;\
diff --git a/libavcodec/ivi_dsp.h b/libavcodec/ivi_dsp.h
index 9632966..0438514 100644
--- a/libavcodec/ivi_dsp.h
+++ b/libavcodec/ivi_dsp.h
@@ -1,7 +1,7 @@
/*
* DSP functions for Indeo Video Interactive codecs (Indeo4 and Indeo5)
*
- * Copyright (c) 2009 Maxim Poliakovski
+ * Copyright (c) 2009-2011 Maxim Poliakovski
*
* This file is part of Libav.
*
@@ -44,6 +44,43 @@ void ff_ivi_recompose53(const IVIPlaneDesc *plane, uint8_t *dst,
const int dst_pitch, const int num_bands);
/**
+ * Haar wavelet recomposition filter for Indeo 4
+ *
+ * @param[in] plane pointer to the descriptor of the plane being processed
+ * @param[out] dst pointer to the destination buffer
+ * @param[in] dst_pitch pitch of the destination buffer
+ * @param[in] num_bands number of wavelet bands to be processed
+ */
+void ff_ivi_recompose_haar(const IVIPlaneDesc *plane, uint8_t *dst,
+ const int dst_pitch, const int num_bands);
+
+/**
+ * two-dimensional inverse Haar 8x8 transform for Indeo 4
+ *
+ * @param[in] in pointer to the vector of transform coefficients
+ * @param[out] out pointer to the output buffer (frame)
+ * @param[in] pitch pitch to move to the next y line
+ * @param[in] flags pointer to the array of column flags:
+ * != 0 - non_empty column, 0 - empty one
+ * (this array must be filled by caller)
+ */
+void ff_ivi_inverse_haar_8x8(const int32_t *in, int16_t *out, uint32_t pitch,
+ const uint8_t *flags);
+
+/**
+ * DC-only two-dimensional inverse Haar transform for Indeo 4.
+ * Performing the inverse transform in this case is equivalent to
+ * spreading DC_coeff >> 3 over the whole block.
+ *
+ * @param[in] in pointer to the dc coefficient
+ * @param[out] out pointer to the output buffer (frame)
+ * @param[in] pitch pitch to move to the next y line
+ * @param[in] blk_size transform block size
+ */
+void ff_ivi_dc_haar_2d(const int32_t *in, int16_t *out, uint32_t pitch,
+ int blk_size);
+
+/**
* two-dimensional inverse slant 8x8 transform
*
* @param[in] in pointer to the vector of transform coefficients
diff --git a/libavcodec/version.h b/libavcodec/version.h
index f664795..9b4f6d7 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -21,7 +21,7 @@
#define AVCODEC_VERSION_H
#define LIBAVCODEC_VERSION_MAJOR 53
-#define LIBAVCODEC_VERSION_MINOR 31
+#define LIBAVCODEC_VERSION_MINOR 32
#define LIBAVCODEC_VERSION_MICRO 0
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
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