factor out common decoding code for Indeo 4 and Indeo 5
This commit is contained in:
Kostya Shishkov
parent
b37d945dd4
commit
aa372cf470
@ -35,9 +35,6 @@
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#include "ivi_common.h"
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#include "indeo4data.h"
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#define IVI4_STREAM_ANALYSER 0
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#define IVI4_DEBUG_CHECKSUM 0
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/**
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* Indeo 4 frame types.
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*/
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@ -54,46 +51,6 @@ enum {
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#define IVI4_PIC_SIZE_ESC 7
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typedef struct {
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GetBitContext gb;
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AVFrame frame;
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RVMapDesc rvmap_tabs[9]; ///< local corrected copy of the static rvmap tables
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uint32_t frame_num;
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int frame_type;
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int prev_frame_type; ///< frame type of the previous frame
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uint32_t data_size; ///< size of the frame data in bytes from picture header
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int is_scalable;
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int transp_status; ///< transparency mode status: 1 - enabled
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IVIPicConfig pic_conf;
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IVIPlaneDesc planes[3]; ///< color planes
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int buf_switch; ///< used to switch between three buffers
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int dst_buf; ///< buffer index for the currently decoded frame
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int ref_buf; ///< inter frame reference buffer index
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IVIHuffTab mb_vlc; ///< current macroblock table descriptor
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IVIHuffTab blk_vlc; ///< current block table descriptor
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uint16_t checksum; ///< frame checksum
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uint8_t rvmap_sel;
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uint8_t in_imf;
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uint8_t in_q; ///< flag for explicitly stored quantiser delta
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uint8_t pic_glob_quant;
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uint8_t unknown1;
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#if IVI4_STREAM_ANALYSER
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uint8_t has_b_frames;
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uint8_t has_transp;
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uint8_t uses_tiling;
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uint8_t uses_haar;
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uint8_t uses_fullpel;
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#endif
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} IVI4DecContext;
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static const struct {
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InvTransformPtr *inv_trans;
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DCTransformPtr *dc_trans;
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@ -158,7 +115,7 @@ static inline int scale_tile_size(int def_size, int size_factor)
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* @param[in] avctx pointer to the AVCodecContext
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* @return result code: 0 = OK, negative number = error
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*/
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static int decode_pic_hdr(IVI4DecContext *ctx, AVCodecContext *avctx)
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static int decode_pic_hdr(IVI45DecContext *ctx, AVCodecContext *avctx)
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{
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int pic_size_indx, i, p;
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IVIPicConfig pic_conf;
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@ -322,7 +279,7 @@ static int decode_pic_hdr(IVI4DecContext *ctx, AVCodecContext *avctx)
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* @param[in] avctx pointer to the AVCodecContext
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* @return result code: 0 = OK, negative number = error
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*/
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static int decode_band_hdr(IVI4DecContext *ctx, IVIBandDesc *band,
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static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band,
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AVCodecContext *avctx)
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{
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int plane, band_num, indx, transform_id, scan_indx;
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@ -458,7 +415,7 @@ static int decode_band_hdr(IVI4DecContext *ctx, IVIBandDesc *band,
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* @param[in] avctx pointer to the AVCodecContext
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* @return result code: 0 = OK, negative number = error
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*/
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static int decode_mb_info(IVI4DecContext *ctx, IVIBandDesc *band,
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static int decode_mb_info(IVI45DecContext *ctx, IVIBandDesc *band,
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IVITile *tile, AVCodecContext *avctx)
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{
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int x, y, mv_x, mv_y, mv_delta, offs, mb_offset, blks_per_mb,
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@ -573,126 +530,12 @@ static int decode_mb_info(IVI4DecContext *ctx, IVIBandDesc *band,
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}
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/**
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* Decode an Indeo 4 band.
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*
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* @param[in,out] ctx pointer to the decoder context
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* @param[in,out] band pointer to the band descriptor
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* @param[in] avctx pointer to the AVCodecContext
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* @return result code: 0 = OK, negative number = error
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*/
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static int decode_band(IVI4DecContext *ctx, int plane_num,
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IVIBandDesc *band, AVCodecContext *avctx)
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{
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int result, i, t, pos, idx1, idx2;
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IVITile *tile;
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band->buf = band->bufs[ctx->dst_buf];
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band->ref_buf = band->bufs[ctx->ref_buf];
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result = decode_band_hdr(ctx, band, avctx);
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if (result) {
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av_log(avctx, AV_LOG_ERROR, "Error decoding band header\n");
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return result;
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}
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if (band->is_empty) {
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av_log(avctx, AV_LOG_ERROR, "Empty band encountered!\n");
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return AVERROR_INVALIDDATA;
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}
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band->rv_map = &ctx->rvmap_tabs[band->rvmap_sel];
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/* apply corrections to the selected rvmap table if present */
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for (i = 0; i < band->num_corr; i++) {
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idx1 = band->corr[i * 2];
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idx2 = band->corr[i * 2 + 1];
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FFSWAP(uint8_t, band->rv_map->runtab[idx1], band->rv_map->runtab[idx2]);
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FFSWAP(int16_t, band->rv_map->valtab[idx1], band->rv_map->valtab[idx2]);
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}
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pos = get_bits_count(&ctx->gb);
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for (t = 0; t < band->num_tiles; t++) {
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tile = &band->tiles[t];
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tile->is_empty = get_bits1(&ctx->gb);
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if (tile->is_empty) {
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ff_ivi_process_empty_tile(avctx, band, tile,
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(ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3));
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av_dlog(avctx, "Empty tile encountered!\n");
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} else {
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tile->data_size = ff_ivi_dec_tile_data_size(&ctx->gb);
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if (!tile->data_size) {
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av_log(avctx, AV_LOG_ERROR, "Tile data size is zero!\n");
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return AVERROR_INVALIDDATA;
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}
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result = decode_mb_info(ctx, band, tile, avctx);
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if (result < 0)
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break;
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result = ff_ivi_decode_blocks(&ctx->gb, band, tile);
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if (result < 0 || ((get_bits_count(&ctx->gb) - pos) >> 3) != tile->data_size) {
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av_log(avctx, AV_LOG_ERROR, "Corrupted tile data encountered!\n");
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break;
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}
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pos += tile->data_size << 3; // skip to next tile
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}
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}
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/* restore the selected rvmap table by applying its corrections in reverse order */
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for (i = band->num_corr - 1; i >= 0; i--) {
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idx1 = band->corr[i * 2];
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idx2 = band->corr[i * 2 + 1];
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FFSWAP(uint8_t, band->rv_map->runtab[idx1], band->rv_map->runtab[idx2]);
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FFSWAP(int16_t, band->rv_map->valtab[idx1], band->rv_map->valtab[idx2]);
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}
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#if defined(DEBUG) && IVI4_DEBUG_CHECKSUM
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if (band->checksum_present) {
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uint16_t chksum = ivi_calc_band_checksum(band);
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if (chksum != band->checksum) {
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av_log(avctx, AV_LOG_ERROR,
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"Band checksum mismatch! Plane %d, band %d, received: %x, calculated: %x\n",
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band->plane, band->band_num, band->checksum, chksum);
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}
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}
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#endif
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align_get_bits(&ctx->gb);
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return 0;
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}
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static av_cold int decode_init(AVCodecContext *avctx)
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{
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IVI4DecContext *ctx = avctx->priv_data;
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ff_ivi_init_static_vlc();
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/* copy rvmap tables in our context so we can apply changes to them */
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memcpy(ctx->rvmap_tabs, ff_ivi_rvmap_tabs, sizeof(ff_ivi_rvmap_tabs));
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/* Force allocation of the internal buffers */
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/* during picture header decoding. */
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ctx->pic_conf.pic_width = 0;
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ctx->pic_conf.pic_height = 0;
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avctx->pix_fmt = PIX_FMT_YUV410P;
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return 0;
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}
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/**
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* Rearrange decoding and reference buffers.
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*
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* @param[in,out] ctx pointer to the decoder context
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*/
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static void switch_buffers(IVI4DecContext *ctx)
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static void switch_buffers(IVI45DecContext *ctx)
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{
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switch (ctx->prev_frame_type) {
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case FRAMETYPE_INTRA:
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@ -721,95 +564,33 @@ static void switch_buffers(IVI4DecContext *ctx)
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}
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static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
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AVPacket *avpkt)
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static int is_nonnull_frame(IVI45DecContext *ctx)
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{
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IVI4DecContext *ctx = avctx->priv_data;
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const uint8_t *buf = avpkt->data;
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int buf_size = avpkt->size;
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int result, p, b;
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init_get_bits(&ctx->gb, buf, buf_size * 8);
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result = decode_pic_hdr(ctx, avctx);
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if (result) {
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av_log(avctx, AV_LOG_ERROR, "Error decoding picture header\n");
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return result;
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}
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switch_buffers(ctx);
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if (ctx->frame_type < FRAMETYPE_NULL_FIRST) {
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for (p = 0; p < 3; p++) {
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for (b = 0; b < ctx->planes[p].num_bands; b++) {
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result = decode_band(ctx, p, &ctx->planes[p].bands[b], avctx);
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if (result) {
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av_log(avctx, AV_LOG_ERROR,
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"Error decoding band: %d, plane: %d\n", b, p);
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return result;
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}
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}
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}
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}
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/* If the bidirectional mode is enabled, next I and the following P frame will */
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/* be sent together. Unfortunately the approach below seems to be the only way */
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/* to handle the B-frames mode. That's exactly the same Intel decoders do. */
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if (ctx->frame_type == FRAMETYPE_INTRA) {
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while (get_bits(&ctx->gb, 8)); // skip version string
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skip_bits_long(&ctx->gb, 64); // skip padding, TODO: implement correct 8-bytes alignment
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if (get_bits_left(&ctx->gb) > 18 && show_bits(&ctx->gb, 18) == 0x3FFF8)
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av_log(avctx, AV_LOG_ERROR, "Buffer contains IP frames!\n");
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}
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if (ctx->frame.data[0])
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avctx->release_buffer(avctx, &ctx->frame);
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ctx->frame.reference = 0;
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if ((result = avctx->get_buffer(avctx, &ctx->frame)) < 0) {
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av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
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return result;
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}
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if (ctx->is_scalable) {
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ff_ivi_recompose_haar(&ctx->planes[0], ctx->frame.data[0], ctx->frame.linesize[0], 4);
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} else {
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ff_ivi_output_plane(&ctx->planes[0], ctx->frame.data[0], ctx->frame.linesize[0]);
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}
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ff_ivi_output_plane(&ctx->planes[2], ctx->frame.data[1], ctx->frame.linesize[1]);
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ff_ivi_output_plane(&ctx->planes[1], ctx->frame.data[2], ctx->frame.linesize[2]);
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*data_size = sizeof(AVFrame);
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*(AVFrame*)data = ctx->frame;
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return buf_size;
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return ctx->frame_type < FRAMETYPE_NULL_FIRST;
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}
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static av_cold int decode_close(AVCodecContext *avctx)
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static av_cold int decode_init(AVCodecContext *avctx)
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{
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IVI4DecContext *ctx = avctx->priv_data;
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IVI45DecContext *ctx = avctx->priv_data;
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ff_ivi_free_buffers(&ctx->planes[0]);
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ff_ivi_init_static_vlc();
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if (ctx->frame.data[0])
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avctx->release_buffer(avctx, &ctx->frame);
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/* copy rvmap tables in our context so we can apply changes to them */
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memcpy(ctx->rvmap_tabs, ff_ivi_rvmap_tabs, sizeof(ff_ivi_rvmap_tabs));
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#if IVI4_STREAM_ANALYSER
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if (ctx->is_scalable)
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av_log(avctx, AV_LOG_ERROR, "This video uses scalability mode!\n");
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if (ctx->uses_tiling)
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av_log(avctx, AV_LOG_ERROR, "This video uses local decoding!\n");
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if (ctx->has_b_frames)
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av_log(avctx, AV_LOG_ERROR, "This video contains B-frames!\n");
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if (ctx->has_transp)
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av_log(avctx, AV_LOG_ERROR, "Transparency mode is enabled!\n");
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if (ctx->uses_haar)
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av_log(avctx, AV_LOG_ERROR, "This video uses Haar transform!\n");
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if (ctx->uses_fullpel)
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av_log(avctx, AV_LOG_ERROR, "This video uses fullpel motion vectors!\n");
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#endif
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/* Force allocation of the internal buffers */
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/* during picture header decoding. */
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ctx->pic_conf.pic_width = 0;
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ctx->pic_conf.pic_height = 0;
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avctx->pix_fmt = PIX_FMT_YUV410P;
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ctx->decode_pic_hdr = decode_pic_hdr;
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ctx->decode_band_hdr = decode_band_hdr;
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ctx->decode_mb_info = decode_mb_info;
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ctx->switch_buffers = switch_buffers;
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ctx->is_nonnull_frame = is_nonnull_frame;
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return 0;
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}
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@ -819,9 +600,9 @@ AVCodec ff_indeo4_decoder = {
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.name = "indeo4",
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.type = AVMEDIA_TYPE_VIDEO,
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.id = CODEC_ID_INDEO4,
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.priv_data_size = sizeof(IVI4DecContext),
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.priv_data_size = sizeof(IVI45DecContext),
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.init = decode_init,
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.close = decode_close,
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.decode = decode_frame,
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.close = ff_ivi_decode_close,
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.decode = ff_ivi_decode_frame,
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.long_name = NULL_IF_CONFIG_SMALL("Intel Indeo Video Interactive 4"),
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};
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@ -48,37 +48,6 @@ enum {
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#define IVI5_PIC_SIZE_ESC 15
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#define IVI5_IS_PROTECTED 0x20
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typedef struct {
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GetBitContext gb;
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AVFrame frame;
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RVMapDesc rvmap_tabs[9]; ///< local corrected copy of the static rvmap tables
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IVIPlaneDesc planes[3]; ///< color planes
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const uint8_t *frame_data; ///< input frame data pointer
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int buf_switch; ///< used to switch between three buffers
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int inter_scal; ///< signals a sequence of scalable inter frames
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int dst_buf; ///< buffer index for the currently decoded frame
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int ref_buf; ///< inter frame reference buffer index
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int ref2_buf; ///< temporal storage for switching buffers
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uint32_t frame_size; ///< frame size in bytes
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int frame_type;
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int prev_frame_type; ///< frame type of the previous frame
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int frame_num;
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uint32_t pic_hdr_size; ///< picture header size in bytes
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uint8_t frame_flags;
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uint16_t checksum; ///< frame checksum
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IVIHuffTab mb_vlc; ///< vlc table for decoding macroblock data
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uint16_t gop_hdr_size;
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uint8_t gop_flags;
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int is_scalable;
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uint32_t lock_word;
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IVIPicConfig pic_conf;
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} IVI5DecContext;
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/**
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* Decode Indeo5 GOP (Group of pictures) header.
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* This header is present in key frames only.
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@ -88,7 +57,7 @@ typedef struct {
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* @param[in] avctx ptr to the AVCodecContext
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* @return result code: 0 = OK, -1 = error
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*/
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static int decode_gop_header(IVI5DecContext *ctx, AVCodecContext *avctx)
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static int decode_gop_header(IVI45DecContext *ctx, AVCodecContext *avctx)
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{
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int result, i, p, tile_size, pic_size_indx, mb_size, blk_size;
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int quant_mat, blk_size_changed = 0;
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@ -318,7 +287,7 @@ static inline void skip_hdr_extension(GetBitContext *gb)
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* @param[in] avctx ptr to the AVCodecContext
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* @return result code: 0 = OK, -1 = error
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*/
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static int decode_pic_hdr(IVI5DecContext *ctx, AVCodecContext *avctx)
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static int decode_pic_hdr(IVI45DecContext *ctx, AVCodecContext *avctx)
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{
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if (get_bits(&ctx->gb, 5) != 0x1F) {
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av_log(avctx, AV_LOG_ERROR, "Invalid picture start code!\n");
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@ -371,7 +340,7 @@ static int decode_pic_hdr(IVI5DecContext *ctx, AVCodecContext *avctx)
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* @param[in] avctx ptr to the AVCodecContext
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* @return result code: 0 = OK, -1 = error
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*/
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static int decode_band_hdr(IVI5DecContext *ctx, IVIBandDesc *band,
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static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band,
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AVCodecContext *avctx)
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{
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int i;
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@ -441,7 +410,7 @@ static int decode_band_hdr(IVI5DecContext *ctx, IVIBandDesc *band,
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* @param[in] avctx ptr to the AVCodecContext
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* @return result code: 0 = OK, -1 = error
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*/
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static int decode_mb_info(IVI5DecContext *ctx, IVIBandDesc *band,
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static int decode_mb_info(IVI45DecContext *ctx, IVIBandDesc *band,
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IVITile *tile, AVCodecContext *avctx)
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{
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int x, y, mv_x, mv_y, mv_delta, offs, mb_offset,
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@ -560,102 +529,12 @@ static int decode_mb_info(IVI5DecContext *ctx, IVIBandDesc *band,
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}
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/**
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* Decode an Indeo5 band.
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*
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* @param[in,out] ctx ptr to the decoder context
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* @param[in,out] band ptr to the band descriptor
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* @param[in] avctx ptr to the AVCodecContext
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* @return result code: 0 = OK, -1 = error
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*/
|
||||
static int decode_band(IVI5DecContext *ctx, int plane_num,
|
||||
IVIBandDesc *band, AVCodecContext *avctx)
|
||||
{
|
||||
int result, i, t, idx1, idx2, pos;
|
||||
IVITile *tile;
|
||||
|
||||
band->buf = band->bufs[ctx->dst_buf];
|
||||
band->ref_buf = band->bufs[ctx->ref_buf];
|
||||
band->data_ptr = ctx->frame_data + (get_bits_count(&ctx->gb) >> 3);
|
||||
|
||||
result = decode_band_hdr(ctx, band, avctx);
|
||||
if (result) {
|
||||
av_log(avctx, AV_LOG_ERROR, "Error while decoding band header: %d\n",
|
||||
result);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (band->is_empty) {
|
||||
av_log(avctx, AV_LOG_ERROR, "Empty band encountered!\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
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));
|
||||
} else {
|
||||
tile->data_size = ff_ivi_dec_tile_data_size(&ctx->gb);
|
||||
|
||||
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]);
|
||||
}
|
||||
|
||||
#ifdef DEBUG
|
||||
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 result;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Switch buffers.
|
||||
*
|
||||
* @param[in,out] ctx ptr to the decoder context
|
||||
*/
|
||||
static void switch_buffers(IVI5DecContext *ctx)
|
||||
static void switch_buffers(IVI45DecContext *ctx)
|
||||
{
|
||||
switch (ctx->prev_frame_type) {
|
||||
case FRAMETYPE_INTRA:
|
||||
@ -693,12 +572,18 @@ static void switch_buffers(IVI5DecContext *ctx)
|
||||
}
|
||||
|
||||
|
||||
static int is_nonnull_frame(IVI45DecContext *ctx)
|
||||
{
|
||||
return ctx->frame_type != FRAMETYPE_NULL;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Initialize Indeo5 decoder.
|
||||
*/
|
||||
static av_cold int decode_init(AVCodecContext *avctx)
|
||||
{
|
||||
IVI5DecContext *ctx = avctx->priv_data;
|
||||
IVI45DecContext *ctx = avctx->priv_data;
|
||||
int result;
|
||||
|
||||
ff_ivi_init_static_vlc();
|
||||
@ -726,109 +611,25 @@ static av_cold int decode_init(AVCodecContext *avctx)
|
||||
ctx->buf_switch = 0;
|
||||
ctx->inter_scal = 0;
|
||||
|
||||
ctx->decode_pic_hdr = decode_pic_hdr;
|
||||
ctx->decode_band_hdr = decode_band_hdr;
|
||||
ctx->decode_mb_info = decode_mb_info;
|
||||
ctx->switch_buffers = switch_buffers;
|
||||
ctx->is_nonnull_frame = is_nonnull_frame;
|
||||
|
||||
avctx->pix_fmt = PIX_FMT_YUV410P;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* main decoder function
|
||||
*/
|
||||
static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
|
||||
AVPacket *avpkt)
|
||||
{
|
||||
IVI5DecContext *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);
|
||||
ctx->frame_data = buf;
|
||||
ctx->frame_size = buf_size;
|
||||
|
||||
result = decode_pic_hdr(ctx, avctx);
|
||||
if (result) {
|
||||
av_log(avctx, AV_LOG_ERROR,
|
||||
"Error while decoding picture header: %d\n", result);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (ctx->gop_flags & IVI5_IS_PROTECTED) {
|
||||
av_log(avctx, AV_LOG_ERROR, "Password-protected clip!\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
switch_buffers(ctx);
|
||||
|
||||
//{ START_TIMER;
|
||||
|
||||
if (ctx->frame_type != FRAMETYPE_NULL) {
|
||||
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 while decoding band: %d, plane: %d\n", b, p);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
//STOP_TIMER("decode_planes"); }
|
||||
|
||||
if (ctx->frame.data[0])
|
||||
avctx->release_buffer(avctx, &ctx->frame);
|
||||
|
||||
ctx->frame.reference = 0;
|
||||
if (avctx->get_buffer(avctx, &ctx->frame) < 0) {
|
||||
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (ctx->is_scalable) {
|
||||
ff_ivi_recompose53 (&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;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Close Indeo5 decoder and clean up its context.
|
||||
*/
|
||||
static av_cold int decode_close(AVCodecContext *avctx)
|
||||
{
|
||||
IVI5DecContext *ctx = avctx->priv_data;
|
||||
|
||||
ff_ivi_free_buffers(&ctx->planes[0]);
|
||||
|
||||
if (ctx->mb_vlc.cust_tab.table)
|
||||
ff_free_vlc(&ctx->mb_vlc.cust_tab);
|
||||
|
||||
if (ctx->frame.data[0])
|
||||
avctx->release_buffer(avctx, &ctx->frame);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
AVCodec ff_indeo5_decoder = {
|
||||
.name = "indeo5",
|
||||
.type = AVMEDIA_TYPE_VIDEO,
|
||||
.id = CODEC_ID_INDEO5,
|
||||
.priv_data_size = sizeof(IVI5DecContext),
|
||||
.priv_data_size = sizeof(IVI45DecContext),
|
||||
.init = decode_init,
|
||||
.close = decode_close,
|
||||
.decode = decode_frame,
|
||||
.close = ff_ivi_decode_close,
|
||||
.decode = ff_ivi_decode_frame,
|
||||
.long_name = NULL_IF_CONFIG_SMALL("Intel Indeo Video Interactive 5"),
|
||||
};
|
||||
|
||||
@ -620,6 +620,216 @@ void ff_ivi_output_plane(IVIPlaneDesc *plane, uint8_t *dst, int dst_pitch)
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Decode an Indeo 4 or 5 band.
|
||||
*
|
||||
* @param[in,out] ctx ptr to the decoder context
|
||||
* @param[in,out] band ptr to the band descriptor
|
||||
* @param[in] avctx ptr to the AVCodecContext
|
||||
* @return result code: 0 = OK, -1 = error
|
||||
*/
|
||||
static int decode_band(IVI45DecContext *ctx, int plane_num,
|
||||
IVIBandDesc *band, AVCodecContext *avctx)
|
||||
{
|
||||
int result, i, t, idx1, idx2, pos;
|
||||
IVITile *tile;
|
||||
|
||||
band->buf = band->bufs[ctx->dst_buf];
|
||||
band->ref_buf = band->bufs[ctx->ref_buf];
|
||||
band->data_ptr = ctx->frame_data + (get_bits_count(&ctx->gb) >> 3);
|
||||
|
||||
result = ctx->decode_band_hdr(ctx, band, avctx);
|
||||
if (result) {
|
||||
av_log(avctx, AV_LOG_ERROR, "Error while decoding band header: %d\n",
|
||||
result);
|
||||
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 = ctx->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]);
|
||||
}
|
||||
|
||||
#ifdef DEBUG
|
||||
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 result;
|
||||
}
|
||||
|
||||
int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
|
||||
AVPacket *avpkt)
|
||||
{
|
||||
IVI45DecContext *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);
|
||||
ctx->frame_data = buf;
|
||||
ctx->frame_size = buf_size;
|
||||
|
||||
result = ctx->decode_pic_hdr(ctx, avctx);
|
||||
if (result) {
|
||||
av_log(avctx, AV_LOG_ERROR,
|
||||
"Error while decoding picture header: %d\n", result);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (ctx->gop_flags & IVI5_IS_PROTECTED) {
|
||||
av_log(avctx, AV_LOG_ERROR, "Password-protected clip!\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
ctx->switch_buffers(ctx);
|
||||
|
||||
//{ START_TIMER;
|
||||
|
||||
if (ctx->is_nonnull_frame(ctx)) {
|
||||
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 while decoding band: %d, plane: %d\n", b, p);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
//STOP_TIMER("decode_planes"); }
|
||||
|
||||
/* 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 (avctx->codec_id == CODEC_ID_INDEO4 && ctx->frame_type == 0/*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) {
|
||||
if (avctx->codec_id == CODEC_ID_INDEO4)
|
||||
ff_ivi_recompose_haar(&ctx->planes[0], ctx->frame.data[0], ctx->frame.linesize[0], 4);
|
||||
else
|
||||
ff_ivi_recompose53 (&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;
|
||||
}
|
||||
|
||||
/**
|
||||
* Close Indeo5 decoder and clean up its context.
|
||||
*/
|
||||
av_cold int ff_ivi_decode_close(AVCodecContext *avctx)
|
||||
{
|
||||
IVI45DecContext *ctx = avctx->priv_data;
|
||||
|
||||
ff_ivi_free_buffers(&ctx->planes[0]);
|
||||
|
||||
if (ctx->mb_vlc.cust_tab.table)
|
||||
ff_free_vlc(&ctx->mb_vlc.cust_tab);
|
||||
|
||||
if (ctx->frame.data[0])
|
||||
avctx->release_buffer(avctx, &ctx->frame);
|
||||
|
||||
#if IVI4_STREAM_ANALYSER
|
||||
if (avctx->codec_id == CODEC_ID_INDEO4) {
|
||||
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;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* These are 2x8 predefined Huffman codebooks for coding macroblock/block
|
||||
|
||||
@ -34,6 +34,8 @@
|
||||
#include <stdint.h>
|
||||
|
||||
#define IVI_VLC_BITS 13 ///< max number of bits of the ivi's huffman codes
|
||||
#define IVI4_STREAM_ANALYSER 0
|
||||
#define IVI5_IS_PROTECTED 0x20
|
||||
|
||||
/**
|
||||
* huffman codebook descriptor
|
||||
@ -192,6 +194,60 @@ typedef struct {
|
||||
uint8_t chroma_bands;
|
||||
} IVIPicConfig;
|
||||
|
||||
typedef struct IVI45DecContext {
|
||||
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
|
||||
const uint8_t *frame_data; ///< input frame data pointer
|
||||
int inter_scal; ///< signals a sequence of scalable inter frames
|
||||
uint32_t frame_size; ///< frame size in bytes
|
||||
uint32_t pic_hdr_size; ///< picture header size in bytes
|
||||
uint8_t frame_flags;
|
||||
uint16_t checksum; ///< frame checksum
|
||||
|
||||
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
|
||||
int ref2_buf; ///< temporal storage for switching buffers
|
||||
|
||||
IVIHuffTab mb_vlc; ///< current macroblock table descriptor
|
||||
IVIHuffTab blk_vlc; ///< current block table descriptor
|
||||
|
||||
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;
|
||||
|
||||
uint16_t gop_hdr_size;
|
||||
uint8_t gop_flags;
|
||||
uint32_t lock_word;
|
||||
|
||||
#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
|
||||
|
||||
int (*decode_pic_hdr) (struct IVI45DecContext *ctx, AVCodecContext *avctx);
|
||||
int (*decode_band_hdr) (struct IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx);
|
||||
int (*decode_mb_info) (struct IVI45DecContext *ctx, IVIBandDesc *band, IVITile *tile, AVCodecContext *avctx);
|
||||
void (*switch_buffers) (struct IVI45DecContext *ctx);
|
||||
int (*is_nonnull_frame)(struct IVI45DecContext *ctx);
|
||||
} IVI45DecContext;
|
||||
|
||||
/** compare some properties of two pictures */
|
||||
static inline int ivi_pic_config_cmp(IVIPicConfig *str1, IVIPicConfig *str2)
|
||||
{
|
||||
@ -348,4 +404,8 @@ uint16_t ivi_calc_band_checksum (IVIBandDesc *band);
|
||||
*/
|
||||
int ivi_check_band (IVIBandDesc *band, const uint8_t *ref, int pitch);
|
||||
|
||||
int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
|
||||
AVPacket *avpkt);
|
||||
av_cold int ff_ivi_decode_close(AVCodecContext *avctx);
|
||||
|
||||
#endif /* AVCODEC_IVI_COMMON_H */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user