From f9d3841ae6147eaa51c57c574cd81e9ce9566e3a Mon Sep 17 00:00:00 2001 From: Kieran Kunhya Date: Fri, 29 Dec 2017 15:42:14 +0000 Subject: [PATCH] mpeg4video: Add support for MPEG-4 Simple Studio Profile. This is a profile supporting > 8-bit video and has a higher quality DCT --- libavcodec/error_resilience.c | 3 +- libavcodec/h263dec.c | 11 + libavcodec/idctdsp.c | 12 +- libavcodec/ituh263dec.c | 17 +- libavcodec/mpeg12dec.c | 18 +- libavcodec/mpeg4data.h | 116 ++++++++ libavcodec/mpeg4video.h | 17 ++ libavcodec/mpeg4videodec.c | 536 +++++++++++++++++++++++++++++++++- libavcodec/mpegvideo.c | 52 +++- libavcodec/mpegvideo.h | 26 +- libavcodec/x86/idctdsp_init.c | 1 + 11 files changed, 763 insertions(+), 46 deletions(-) diff --git a/libavcodec/error_resilience.c b/libavcodec/error_resilience.c index 55f77961c5..25e54a535b 100644 --- a/libavcodec/error_resilience.c +++ b/libavcodec/error_resilience.c @@ -814,7 +814,8 @@ static int er_supported(ERContext *s) { if(s->avctx->hwaccel && s->avctx->hwaccel->decode_slice || !s->cur_pic.f || - s->cur_pic.field_picture + s->cur_pic.field_picture || + s->avctx->profile == FF_PROFILE_MPEG4_SIMPLE_STUDIO ) return 0; return 1; diff --git a/libavcodec/h263dec.c b/libavcodec/h263dec.c index 5608b63245..484bf39578 100644 --- a/libavcodec/h263dec.c +++ b/libavcodec/h263dec.c @@ -47,6 +47,12 @@ static enum AVPixelFormat h263_get_format(AVCodecContext *avctx) { + /* MPEG-4 Studio Profile only, not supported by hardware */ + if (avctx->bits_per_raw_sample > 8) { + av_assert1(avctx->profile == FF_PROFILE_MPEG4_SIMPLE_STUDIO); + return avctx->pix_fmt; + } + if (avctx->codec->id == AV_CODEC_ID_MSS2) return AV_PIX_FMT_YUV420P; @@ -197,6 +203,11 @@ static int decode_slice(MpegEncContext *s) ff_set_qscale(s, s->qscale); + if (s->studio_profile) { + if ((ret = ff_mpeg4_decode_studio_slice_header(s->avctx->priv_data)) < 0) + return ret; + } + if (s->avctx->hwaccel) { const uint8_t *start = s->gb.buffer + get_bits_count(&s->gb) / 8; ret = s->avctx->hwaccel->decode_slice(s->avctx, start, s->gb.buffer_end - start); diff --git a/libavcodec/idctdsp.c b/libavcodec/idctdsp.c index 1de372d2b9..662033bd78 100644 --- a/libavcodec/idctdsp.c +++ b/libavcodec/idctdsp.c @@ -256,9 +256,15 @@ av_cold void ff_idctdsp_init(IDCTDSPContext *c, AVCodecContext *avctx) c->perm_type = FF_IDCT_PERM_NONE; } else { if (avctx->bits_per_raw_sample == 10 || avctx->bits_per_raw_sample == 9) { - c->idct_put = ff_simple_idct_put_int16_10bit; - c->idct_add = ff_simple_idct_add_int16_10bit; - c->idct = ff_simple_idct_int16_10bit; + /* 10-bit MPEG-4 Simple Studio Profile requires a higher precision IDCT + However, it only uses idct_put */ + if (avctx->codec_id == AV_CODEC_ID_MPEG4 && avctx->profile == FF_PROFILE_MPEG4_SIMPLE_STUDIO) + c->idct_put = ff_simple_idct_put_int32_10bit; + else { + c->idct_put = ff_simple_idct_put_int16_10bit; + c->idct_add = ff_simple_idct_add_int16_10bit; + c->idct = ff_simple_idct_int16_10bit; + } c->perm_type = FF_IDCT_PERM_NONE; } else if (avctx->bits_per_raw_sample == 12) { c->idct_put = ff_simple_idct_put_int16_12bit; diff --git a/libavcodec/ituh263dec.c b/libavcodec/ituh263dec.c index fc95a532ce..1b57e53cad 100644 --- a/libavcodec/ituh263dec.c +++ b/libavcodec/ituh263dec.c @@ -207,12 +207,27 @@ static int h263_decode_gob_header(MpegEncContext *s) } /** - * Decode the group of blocks / video packet header. + * Decode the group of blocks / video packet header / slice header (MPEG-4 Studio). * @return bit position of the resync_marker, or <0 if none was found */ int ff_h263_resync(MpegEncContext *s){ int left, pos, ret; + /* In MPEG-4 studio mode look for a new slice startcode + * and decode slice header */ + if(s->codec_id==AV_CODEC_ID_MPEG4 && s->studio_profile) { + align_get_bits(&s->gb); + + while (get_bits_left(&s->gb) >= 32 && show_bits_long(&s->gb, 32) != SLICE_START_CODE) { + get_bits(&s->gb, 8); + } + + if (show_bits_long(&s->gb, 32) == SLICE_START_CODE) + return get_bits_count(&s->gb); + else + return -1; + } + if(s->codec_id==AV_CODEC_ID_MPEG4){ skip_bits1(&s->gb); align_get_bits(&s->gb); diff --git a/libavcodec/mpeg12dec.c b/libavcodec/mpeg12dec.c index 9e076e89da..83e537884b 100644 --- a/libavcodec/mpeg12dec.c +++ b/libavcodec/mpeg12dec.c @@ -649,16 +649,6 @@ static inline int get_dmv(MpegEncContext *s) return 0; } -static inline int get_qscale(MpegEncContext *s) -{ - int qscale = get_bits(&s->gb, 5); - if (s->q_scale_type) - return ff_mpeg2_non_linear_qscale[qscale]; - else - return qscale << 1; -} - - /* motion type (for MPEG-2) */ #define MT_FIELD 1 #define MT_FRAME 2 @@ -751,7 +741,7 @@ static int mpeg_decode_mb(MpegEncContext *s, int16_t block[12][64]) s->interlaced_dct = get_bits1(&s->gb); if (IS_QUANT(mb_type)) - s->qscale = get_qscale(s); + s->qscale = mpeg_get_qscale(s); if (s->concealment_motion_vectors) { /* just parse them */ @@ -819,7 +809,7 @@ static int mpeg_decode_mb(MpegEncContext *s, int16_t block[12][64]) } if (IS_QUANT(mb_type)) - s->qscale = get_qscale(s); + s->qscale = mpeg_get_qscale(s); s->last_mv[0][0][0] = 0; s->last_mv[0][0][1] = 0; @@ -840,7 +830,7 @@ static int mpeg_decode_mb(MpegEncContext *s, int16_t block[12][64]) } if (IS_QUANT(mb_type)) - s->qscale = get_qscale(s); + s->qscale = mpeg_get_qscale(s); /* motion vectors */ s->mv_dir = (mb_type >> 13) & 3; @@ -1728,7 +1718,7 @@ static int mpeg_decode_slice(MpegEncContext *s, int mb_y, ff_mpeg1_clean_buffers(s); s->interlaced_dct = 0; - s->qscale = get_qscale(s); + s->qscale = mpeg_get_qscale(s); if (s->qscale == 0) { av_log(s->avctx, AV_LOG_ERROR, "qscale == 0\n"); diff --git a/libavcodec/mpeg4data.h b/libavcodec/mpeg4data.h index b7c3faba0d..4756e9ea1d 100644 --- a/libavcodec/mpeg4data.h +++ b/libavcodec/mpeg4data.h @@ -373,4 +373,120 @@ const uint8_t ff_mpeg4_dc_threshold[8]={ 99, 13, 15, 17, 19, 21, 23, 0 }; +/* Note these are different in studio mode */ +const uint16_t ff_mpeg4_studio_dc_luma[19][2]={ + {0x0e, 6}, {0x06, 5}, {0x00, 4}, {0x02, 4}, + {0x07, 3}, {0x05, 3}, {0x03, 3}, {0x02, 3}, + {0x04, 3}, {0x06, 3}, {0x01, 4}, {0x1e, 7}, + {0x3e, 8}, {0x7e, 9}, {0xfe, 10}, {0x1fe, 11}, + {0x3fe, 12}, {0x7fe, 13}, {0x7ff, 13} +}; + +const uint16_t ff_mpeg4_studio_dc_chroma[19][2]={ + {0x00, 4}, {0x02, 4}, {0x07, 3}, {0x05, 3}, + {0x03, 3}, {0x02, 3}, {0x04, 3}, {0x06, 3}, + {0x01, 4}, {0x06, 5}, {0x0e, 6}, {0x1e, 7}, + {0x3e, 8}, {0x7e, 9}, {0xfe, 10}, {0x1fe, 11}, + {0x3fe, 12}, {0x7fe, 13}, {0x7ff, 13} +}; + +const uint16_t ff_mpeg4_studio_intra[12][22][2]={ + { + {0x05, 4}, {0x04, 4}, {0x05, 7}, {0x09, 9}, + {0x21, 11}, {0x41, 12}, {0x81, 13}, {0x03, 4}, + {0x03, 5}, {0x05, 6}, {0x04, 7}, {0x03, 7}, + {0x05, 8}, {0x03, 2}, {0x05, 3}, {0x04, 3}, + {0x03, 3}, {0x02, 4}, {0x04, 6}, {0x03, 6}, + {0x11, 10}, {0x80, 13} + }, + { + {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}, + {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}, + {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}, + {0x00, 0}, {0x00, 0}, {0x01, 1}, {0x01, 2}, + {0x01, 3}, {0x01, 4}, {0x01, 5}, {0x03, 7}, + {0x05, 8}, {0x04, 8} + }, + { + {0x05, 3}, {0x03, 5}, {0x02, 5}, {0x03, 7}, + {0x09, 9}, {0x103, 14}, {0x102, 14}, {0x04, 3}, + {0x03, 3}, {0x03, 4}, {0x02, 4}, {0x03, 6}, + {0x11, 10}, {0x03, 2}, {0x02, 3}, {0x02, 6}, + {0x05, 8}, {0x21, 11}, {0x83, 13}, {0x101, 14}, + {0x201, 15}, {0x82, 13} + }, + { + {0x05, 5}, {0x05, 4}, {0x04, 5}, {0x03, 6}, + {0x09, 9}, {0x83, 13}, {0x82, 13}, {0x03, 3}, + {0x04, 4}, {0x03, 4}, {0x03, 5}, {0x05, 8}, + {0x81, 13}, {0x03, 2}, {0x02, 2}, {0x02, 5}, + {0x02, 6}, {0x03, 7}, {0x11, 10}, {0x43, 12}, + {0x80, 13}, {0x42, 12} + }, + { + {0x05, 7}, {0x03, 4}, {0x03, 5}, {0x04, 7}, + {0x09, 9}, {0x83, 13}, {0x101, 14}, {0x03, 3}, + {0x02, 4}, {0x05, 6}, {0x03, 7}, {0x11, 10}, + {0x201, 15}, {0x03, 2}, {0x02, 2}, {0x02, 3}, + {0x04, 6}, {0x03, 6}, {0x05, 8}, {0x21, 11}, + {0x82, 13}, {0x81, 13} + }, + { + {0x13, 10}, {0x03, 5}, {0x05, 7}, {0x12, 10}, + {0x43, 12}, {0x83, 13}, {0x82, 13}, {0x02, 5}, + {0x04, 7}, {0x05, 8}, {0x23, 11}, {0x81, 13}, + {0x101, 14}, {0x03, 2}, {0x02, 2}, {0x01, 2}, + {0x01, 3}, {0x03, 6}, {0x03, 7}, {0x22, 11}, + {0x201, 15}, {0x42, 12} + }, + { + {0x23, 11}, {0x01, 4}, {0x07, 8}, {0x13, 10}, + {0x22, 11}, {0x103, 14}, {0x102, 14}, {0x03, 6}, + {0x06, 8}, {0x12, 10}, {0x43, 12}, {0x101, 14}, + {0x201, 15}, {0x03, 3}, {0x02, 3}, {0x03, 2}, + {0x02, 2}, {0x01, 3}, {0x02, 6}, {0x05, 8}, + {0x42, 12}, {0x41, 12} + }, + { + {0x0b, 9}, {0x03, 5}, {0x07, 8}, {0x07, 7}, + {0x06, 7}, {0x23, 11}, {0x41, 12}, {0x05, 7}, + {0x06, 8}, {0x0a, 9}, {0x13, 10}, {0x22, 11}, + {0x40, 12}, {0x03, 4}, {0x02, 4}, {0x03, 2}, + {0x02, 2}, {0x01, 2}, {0x02, 5}, {0x04, 7}, + {0x12, 10}, {0x21, 11} + }, + { + {0x15, 10}, {0x03, 6}, {0x14, 10}, {0x23, 11}, + {0x07, 8}, {0x43, 12}, {0x81, 13}, {0x06, 8}, + {0x0b, 9}, {0x13, 10}, {0x12, 10}, {0x42, 12}, + {0x80, 13}, {0x01, 4}, {0x03, 3}, {0x02, 3}, + {0x03, 2}, {0x02, 2}, {0x01, 3}, {0x02, 6}, + {0x22, 11}, {0x41, 12} + }, + { + {0x43, 12}, {0x05, 6}, {0x07, 8}, {0x04, 6}, + {0x03, 6}, {0x13, 10}, {0x42, 12}, {0x05, 7}, + {0x04, 7}, {0x06, 8}, {0x12, 10}, {0x41, 12}, + {0x40, 12}, {0x03, 5}, {0x03, 4}, {0x03, 3}, + {0x02, 3}, {0x03, 2}, {0x02, 2}, {0x02, 4}, + {0x05, 8}, {0x11, 10} + }, + { + {0x83, 13}, {0x05, 7}, {0x07, 8}, {0x03, 4}, + {0x21, 11}, {0x82, 13}, {0x81, 13}, {0x04, 7}, + {0x06, 8}, {0x0b, 9}, {0x0a, 9}, {0x11, 10}, + {0x80, 13}, {0x03, 5}, {0x02, 5}, {0x02, 4}, + {0x03, 3}, {0x02, 3}, {0x03, 2}, {0x02, 2}, + {0x03, 6}, {0x09, 9} + }, + { + {0x13, 10}, {0x03, 5}, {0x03, 6}, {0x0d, 9}, + {0x0c, 9}, {0x21, 11}, {0x20, 11}, {0x02, 5}, + {0x02, 6}, {0x07, 8}, {0x0b, 9}, {0x12, 10}, + {0x11, 10}, {0x05, 3}, {0x04, 3}, {0x05, 4}, + {0x04, 4}, {0x03, 4}, {0x02, 4}, {0x03, 3}, + {0x03, 2}, {0x0a, 9} + } +}; + #endif /* AVCODEC_MPEG4DATA_H */ diff --git a/libavcodec/mpeg4video.h b/libavcodec/mpeg4video.h index 6672c6dd66..f974792887 100644 --- a/libavcodec/mpeg4video.h +++ b/libavcodec/mpeg4video.h @@ -61,6 +61,10 @@ #define GOP_STARTCODE 0x1B3 #define VISUAL_OBJ_STARTCODE 0x1B5 #define VOP_STARTCODE 0x1B6 +#define SLICE_STARTCODE 0x1B7 +#define EXT_STARTCODE 0x1B8 + +#define QUANT_MATRIX_EXT_ID 0x3 /* smaller packets likely don't contain a real frame */ #define MAX_NVOP_SIZE 19 @@ -108,8 +112,16 @@ typedef struct Mpeg4DecContext { int cplx_estimation_trash_i; int cplx_estimation_trash_p; int cplx_estimation_trash_b; + + VLC studio_intra_tab[12]; + VLC studio_luma_dc; + VLC studio_chroma_dc; + + int rgb; } Mpeg4DecContext; +static const uint8_t mpeg4_block_count[4] = {0, 6, 8, 12}; + /* dc encoding for MPEG-4 */ extern const uint8_t ff_mpeg4_DCtab_lum[13][2]; extern const uint8_t ff_mpeg4_DCtab_chrom[13][2]; @@ -137,6 +149,10 @@ extern const uint16_t ff_mpeg4_resync_prefix[8]; extern const uint8_t ff_mpeg4_dc_threshold[8]; +extern const uint16_t ff_mpeg4_studio_dc_luma[19][2]; +extern const uint16_t ff_mpeg4_studio_dc_chroma[19][2]; +extern const uint16_t ff_mpeg4_studio_intra[12][22][2]; + void ff_mpeg4_encode_mb(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y); @@ -155,6 +171,7 @@ void ff_clean_mpeg4_qscales(MpegEncContext *s); int ff_mpeg4_decode_partitions(Mpeg4DecContext *ctx); int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s); int ff_mpeg4_decode_video_packet_header(Mpeg4DecContext *ctx); +int ff_mpeg4_decode_studio_slice_header(Mpeg4DecContext *ctx); void ff_mpeg4_init_direct_mv(MpegEncContext *s); void ff_mpeg4videodec_static_init(void); int ff_mpeg4_workaround_bugs(AVCodecContext *avctx); diff --git a/libavcodec/mpeg4videodec.c b/libavcodec/mpeg4videodec.c index a1117dc272..f53bd03bf1 100644 --- a/libavcodec/mpeg4videodec.c +++ b/libavcodec/mpeg4videodec.c @@ -44,6 +44,7 @@ #define SPRITE_TRAJ_VLC_BITS 6 #define DC_VLC_BITS 9 #define MB_TYPE_B_VLC_BITS 4 +#define STUDIO_INTRA_BITS 9 static VLC dc_lum, dc_chrom; static VLC sprite_trajectory; @@ -528,6 +529,55 @@ int ff_mpeg4_decode_video_packet_header(Mpeg4DecContext *ctx) return 0; } +static void reset_studio_dc_predictors(MpegEncContext *s) +{ + /* Reset DC Predictors */ + s->last_dc[0] = + s->last_dc[1] = + s->last_dc[2] = 1 << (s->avctx->bits_per_raw_sample + s->dct_precision + s->intra_dc_precision - 1); +} + +/** + * Decode the next video packet. + * @return <0 if something went wrong + */ +int ff_mpeg4_decode_studio_slice_header(Mpeg4DecContext *ctx) +{ + MpegEncContext *s = &ctx->m; + GetBitContext *gb = &s->gb; + unsigned vlc_len; + uint16_t mb_num; + + if (get_bits_left(gb) >= 32 && get_bits_long(gb, 32) == SLICE_START_CODE) { + vlc_len = av_log2(s->mb_width * s->mb_height) + 1; + mb_num = get_bits(gb, vlc_len); + + if (mb_num >= s->mb_num) + return AVERROR_INVALIDDATA; + + s->mb_x = mb_num % s->mb_width; + s->mb_y = mb_num / s->mb_width; + + if (ctx->shape != BIN_ONLY_SHAPE) + s->qscale = mpeg_get_qscale(s); + + if (get_bits1(gb)) { /* slice_extension_flag */ + skip_bits1(gb); /* intra_slice */ + skip_bits1(gb); /* slice_VOP_id_enable */ + skip_bits(gb, 6); /* slice_VOP_id */ + while (get_bits1(gb)) /* extra_bit_slice */ + skip_bits(gb, 8); /* extra_information_slice */ + } + + reset_studio_dc_predictors(s); + } + else { + return AVERROR_INVALIDDATA; + } + + return 0; +} + /** * Get the average motion vector for a GMC MB. * @param n either 0 for the x component or 1 for y @@ -1723,6 +1773,189 @@ end: return SLICE_OK; } +/* As per spec, studio start code search isn't the same as the old type of start code */ +static void next_start_code_studio(GetBitContext *gb) +{ + align_get_bits(gb); + + while (get_bits_left(gb) >= 24 && show_bits_long(gb, 24) != 0x1) { + get_bits(gb, 8); + } +} + +/* additional_code, vlc index */ +static const uint8_t ac_state_tab[22][2] = +{ + {0, 0}, + {0, 1}, + {1, 1}, + {2, 1}, + {3, 1}, + {4, 1}, + {5, 1}, + {1, 2}, + {2, 2}, + {3, 2}, + {4, 2}, + {5, 2}, + {6, 2}, + {1, 3}, + {2, 4}, + {3, 5}, + {4, 6}, + {5, 7}, + {6, 8}, + {7, 9}, + {8, 10}, + {0, 11} +}; + +static int mpeg4_decode_studio_block(MpegEncContext *s, int32_t block[64], int n) +{ + Mpeg4DecContext *ctx = s->avctx->priv_data; + + int cc, dct_dc_size, dct_diff, code, j, idx = 1, group = 0, run = 0, + additional_code_len, sign, mismatch; + VLC *cur_vlc = &ctx->studio_intra_tab[0]; + uint8_t *const scantable = s->intra_scantable.permutated; + const uint16_t *quant_matrix; + uint32_t flc; + const int min = -1 * (1 << (s->avctx->bits_per_raw_sample + 6)); + const int max = ((1 << (s->avctx->bits_per_raw_sample + 6)) - 1); + + mismatch = 1; + + memset(block, 0, 64 * sizeof(int32_t)); + + if (n < 4) { + cc = 0; + dct_dc_size = get_vlc2(&s->gb, ctx->studio_luma_dc.table, STUDIO_INTRA_BITS, 2); + quant_matrix = s->intra_matrix; + } else { + cc = (n & 1) + 1; + if (ctx->rgb) + dct_dc_size = get_vlc2(&s->gb, ctx->studio_luma_dc.table, STUDIO_INTRA_BITS, 2); + else + dct_dc_size = get_vlc2(&s->gb, ctx->studio_chroma_dc.table, STUDIO_INTRA_BITS, 2); + quant_matrix = s->chroma_intra_matrix; + } + + if (dct_dc_size < 0) { + av_log(s->avctx, AV_LOG_ERROR, "illegal dct_dc_size vlc\n"); + return AVERROR_INVALIDDATA; + } else if (dct_dc_size == 0) { + dct_diff = 0; + } else { + dct_diff = get_xbits(&s->gb, dct_dc_size); + + if (dct_dc_size > 8) { + if(!check_marker(s->avctx, &s->gb, "dct_dc_size > 8")) + return AVERROR_INVALIDDATA; + } + + } + + s->last_dc[cc] += dct_diff; + + if (s->mpeg_quant) + block[0] = s->last_dc[cc] * (8 >> s->intra_dc_precision); + else + block[0] = s->last_dc[cc] * (8 >> s->intra_dc_precision) * (8 >> s->dct_precision); + /* TODO: support mpeg_quant for AC coefficients */ + + block[0] = av_clip(block[0], min, max); + mismatch ^= block[0]; + + /* AC Coefficients */ + while (1) { + group = get_vlc2(&s->gb, cur_vlc->table, STUDIO_INTRA_BITS, 2); + + if (group < 0) { + av_log(s->avctx, AV_LOG_ERROR, "illegal ac coefficient group vlc\n"); + return AVERROR_INVALIDDATA; + } + + additional_code_len = ac_state_tab[group][0]; + cur_vlc = &ctx->studio_intra_tab[ac_state_tab[group][1]]; + + if (group == 0) { + /* End of Block */ + break; + } else if (group >= 1 && group <= 6) { + /* Zero run length (Table B.47) */ + run = 1 << additional_code_len; + if (additional_code_len) + run += get_bits(&s->gb, additional_code_len); + idx += run; + continue; + } else if (group >= 7 && group <= 12) { + /* Zero run length and +/-1 level (Table B.48) */ + code = get_bits(&s->gb, additional_code_len); + sign = code & 1; + code >>= 1; + run = (1 << (additional_code_len - 1)) + code; + idx += run; + j = scantable[idx++]; + block[j] = sign ? 1 : -1; + } else if (group >= 13 && group <= 20) { + /* Level value (Table B.49) */ + j = scantable[idx++]; + block[j] = get_xbits(&s->gb, additional_code_len); + } else if (group == 21) { + /* Escape */ + j = scantable[idx++]; + additional_code_len = s->avctx->bits_per_raw_sample + s->dct_precision + 4; + flc = get_bits(&s->gb, additional_code_len); + if (flc >> (additional_code_len-1)) + block[j] = -1 * (( flc ^ ((1 << additional_code_len) -1)) + 1); + else + block[j] = flc; + } + block[j] = ((8 * 2 * block[j] * quant_matrix[j] * s->qscale) >> s->dct_precision) / 32; + block[j] = av_clip(block[j], min, max); + mismatch ^= block[j]; + } + + block[63] ^= mismatch & 1; + + return 0; +} + +static int mpeg4_decode_studio_mb(MpegEncContext *s, int16_t block_[12][64]) +{ + int i; + + /* StudioMacroblock */ + /* Assumes I-VOP */ + s->mb_intra = 1; + if (get_bits1(&s->gb)) { /* compression_mode */ + /* DCT */ + /* macroblock_type, 1 or 2-bit VLC */ + if (!get_bits1(&s->gb)) { + skip_bits1(&s->gb); + s->qscale = mpeg_get_qscale(s); + } + + for (i = 0; i < mpeg4_block_count[s->chroma_format]; i++) { + if (mpeg4_decode_studio_block(s, (*s->block32)[i], i) < 0) + return AVERROR_INVALIDDATA; + } + } else { + /* DPCM */ + check_marker(s->avctx, &s->gb, "DPCM block start"); + avpriv_request_sample(s->avctx, "DPCM encoded block"); + next_start_code_studio(&s->gb); + return SLICE_ERROR; + } + + if (get_bits_left(&s->gb) >= 24 && show_bits(&s->gb, 23) == 0) { + next_start_code_studio(&s->gb); + return SLICE_END; + } + + return SLICE_OK; +} + static int mpeg4_decode_gop_header(MpegEncContext *s, GetBitContext *gb) { int hours, minutes, seconds; @@ -1791,6 +2024,23 @@ static int mpeg4_decode_visual_object(MpegEncContext *s, GetBitContext *gb) return 0; } +static void mpeg4_load_default_matrices(MpegEncContext *s) +{ + int i, v; + + /* load default matrices */ + for (i = 0; i < 64; i++) { + int j = s->idsp.idct_permutation[i]; + v = ff_mpeg4_default_intra_matrix[i]; + s->intra_matrix[j] = v; + s->chroma_intra_matrix[j] = v; + + v = ff_mpeg4_default_non_intra_matrix[i]; + s->inter_matrix[j] = v; + s->chroma_inter_matrix[j] = v; + } +} + static int decode_vol_header(Mpeg4DecContext *ctx, GetBitContext *gb) { MpegEncContext *s = &ctx->m; @@ -1954,17 +2204,7 @@ static int decode_vol_header(Mpeg4DecContext *ctx, GetBitContext *gb) if ((s->mpeg_quant = get_bits1(gb))) { /* vol_quant_type */ int i, v; - /* load default matrixes */ - for (i = 0; i < 64; i++) { - int j = s->idsp.idct_permutation[i]; - v = ff_mpeg4_default_intra_matrix[i]; - s->intra_matrix[j] = v; - s->chroma_intra_matrix[j] = v; - - v = ff_mpeg4_default_non_intra_matrix[i]; - s->inter_matrix[j] = v; - s->chroma_inter_matrix[j] = v; - } + mpeg4_load_default_matrices(s); /* load custom intra matrix */ if (get_bits1(gb)) { @@ -2608,6 +2848,232 @@ static int decode_vop_header(Mpeg4DecContext *ctx, GetBitContext *gb) return 0; } +static void read_quant_matrix_ext(MpegEncContext *s, GetBitContext *gb) +{ + int i, j, v; + + if (get_bits1(gb)) { + /* intra_quantiser_matrix */ + for (i = 0; i < 64; i++) { + v = get_bits(gb, 8); + j = s->idsp.idct_permutation[ff_zigzag_direct[i]]; + s->intra_matrix[j] = v; + s->chroma_intra_matrix[j] = v; + } + } + + if (get_bits1(gb)) { + /* non_intra_quantiser_matrix */ + for (i = 0; i < 64; i++) { + get_bits(gb, 8); + } + } + + if (get_bits1(gb)) { + /* chroma_intra_quantiser_matrix */ + for (i = 0; i < 64; i++) { + v = get_bits(gb, 8); + j = s->idsp.idct_permutation[ff_zigzag_direct[i]]; + s->chroma_intra_matrix[j] = v; + } + } + + if (get_bits1(gb)) { + /* chroma_non_intra_quantiser_matrix */ + for (i = 0; i < 64; i++) { + get_bits(gb, 8); + } + } + + next_start_code_studio(gb); +} + +static void extension_and_user_data(MpegEncContext *s, GetBitContext *gb, int id) +{ + uint32_t startcode; + uint8_t extension_type; + + startcode = show_bits_long(gb, 32); + if (startcode == USER_DATA_STARTCODE || startcode == EXT_STARTCODE) { + + if ((id == 2 || id == 4) && startcode == EXT_STARTCODE) { + skip_bits_long(gb, 32); + extension_type = get_bits(gb, 4); + if (extension_type == QUANT_MATRIX_EXT_ID) + read_quant_matrix_ext(s, gb); + } + } +} + +static void decode_smpte_tc(Mpeg4DecContext *ctx, GetBitContext *gb) +{ + MpegEncContext *s = &ctx->m; + + skip_bits(gb, 16); /* Time_code[63..48] */ + check_marker(s->avctx, gb, "after Time_code[63..48]"); + skip_bits(gb, 16); /* Time_code[47..32] */ + check_marker(s->avctx, gb, "after Time_code[47..32]"); + skip_bits(gb, 16); /* Time_code[31..16] */ + check_marker(s->avctx, gb, "after Time_code[31..16]"); + skip_bits(gb, 16); /* Time_code[15..0] */ + check_marker(s->avctx, gb, "after Time_code[15..0]"); + skip_bits(gb, 4); /* reserved_bits */ +} + +/** + * Decode the next studio vop header. + * @return <0 if something went wrong + */ +static int decode_studio_vop_header(Mpeg4DecContext *ctx, GetBitContext *gb) +{ + MpegEncContext *s = &ctx->m; + + if (get_bits_left(gb) <= 32) + return 0; + + if (get_bits_long(gb, 32) != VOP_STARTCODE) + return AVERROR_INVALIDDATA; + + s->decode_mb = mpeg4_decode_studio_mb; + + decode_smpte_tc(ctx, gb); + + skip_bits(gb, 10); /* temporal_reference */ + skip_bits(gb, 2); /* vop_structure */ + s->pict_type = get_bits(gb, 2) + AV_PICTURE_TYPE_I; /* vop_coding_type */ + if (get_bits1(gb)) { /* vop_coded */ + skip_bits1(gb); /* top_field_first */ + skip_bits1(gb); /* repeat_first_field */ + s->progressive_frame = get_bits1(gb) ^ 1; /* progressive_frame */ + } + + if (s->pict_type == AV_PICTURE_TYPE_I) { + if (get_bits1(gb)) + reset_studio_dc_predictors(s); + } + + if (ctx->shape != BIN_ONLY_SHAPE) { + s->alternate_scan = get_bits1(gb); + s->frame_pred_frame_dct = get_bits1(gb); + s->dct_precision = get_bits(gb, 2); + s->intra_dc_precision = get_bits(gb, 2); + s->q_scale_type = get_bits1(gb); + } + + if (s->alternate_scan) { + ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable, ff_alternate_vertical_scan); + ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_alternate_vertical_scan); + ff_init_scantable(s->idsp.idct_permutation, &s->intra_h_scantable, ff_alternate_vertical_scan); + ff_init_scantable(s->idsp.idct_permutation, &s->intra_v_scantable, ff_alternate_vertical_scan); + } else { + ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable, ff_zigzag_direct); + ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_zigzag_direct); + ff_init_scantable(s->idsp.idct_permutation, &s->intra_h_scantable, ff_alternate_horizontal_scan); + ff_init_scantable(s->idsp.idct_permutation, &s->intra_v_scantable, ff_alternate_vertical_scan); + } + + mpeg4_load_default_matrices(s); + + next_start_code_studio(gb); + extension_and_user_data(s, gb, 4); + + return 0; +} + +static int decode_studiovisualobject(Mpeg4DecContext *ctx, GetBitContext *gb) +{ + uint32_t startcode; + MpegEncContext *s = &ctx->m; + int visual_object_type, width, height; + + startcode = get_bits_long(gb, 32); + + /* StudioVisualObject() */ + if (startcode == VISUAL_OBJ_STARTCODE) { + skip_bits(gb, 4); /* visual_object_verid */ + visual_object_type = get_bits(gb, 4); + + next_start_code_studio(gb); + extension_and_user_data(s, gb, 1); + + if (visual_object_type == VOT_VIDEO_ID) { + /* StudioVideoObjectLayer */ + skip_bits_long(gb, 32); /* video_object_start_code */ + skip_bits_long(gb, 32); /* video_object_layer_start_code */ + skip_bits1(gb); /* random_accessible_vol */ + skip_bits(gb, 8); /* video_object_type_indication */ + skip_bits(gb, 4); /* video_object_layer_verid */ + ctx->shape = get_bits(gb, 2); /* video_object_layer_shape */ + skip_bits(gb, 4); /* video_object_layer_shape_extension */ + skip_bits1(gb); /* progressive_sequence */ + if (ctx->shape != BIN_ONLY_SHAPE) { + ctx->rgb = get_bits1(gb); /* rgb_components */ + s->chroma_format = get_bits(gb, 2); /* chroma_format */ + if (!s->chroma_format) { + av_log(s->avctx, AV_LOG_ERROR, "illegal chroma format\n"); + return AVERROR_INVALIDDATA; + } + + s->avctx->bits_per_raw_sample = get_bits(gb, 4); /* bit_depth */ + if (s->avctx->bits_per_raw_sample == 10) { + if (ctx->rgb) { + s->avctx->pix_fmt = AV_PIX_FMT_GBRP10; + } + else { + s->avctx->pix_fmt = s->chroma_format == CHROMA_422 ? AV_PIX_FMT_YUV422P10 : AV_PIX_FMT_YUV444P10; + } + } + else { + avpriv_request_sample(s->avctx, "MPEG-4 Studio profile bit-depth %u", s->avctx->bits_per_raw_sample); + return AVERROR_PATCHWELCOME; + } + } + if (ctx->shape == RECT_SHAPE) { + check_marker(s->avctx, gb, "before video_object_layer_width"); + width = get_bits(gb, 14); /* video_object_layer_width */ + check_marker(s->avctx, gb, "before video_object_layer_height"); + height = get_bits(gb, 14); /* video_object_layer_height */ + check_marker(s->avctx, gb, "after video_object_layer_height"); + + /* Do the same check as non-studio profile */ + if (width && height) { + if (s->width && s->height && + (s->width != width || s->height != height)) + s->context_reinit = 1; + s->width = width; + s->height = height; + } + } + s->aspect_ratio_info = get_bits(gb, 4); + if (s->aspect_ratio_info == FF_ASPECT_EXTENDED) { + s->avctx->sample_aspect_ratio.num = get_bits(gb, 8); // par_width + s->avctx->sample_aspect_ratio.den = get_bits(gb, 8); // par_height + } else { + s->avctx->sample_aspect_ratio = ff_h263_pixel_aspect[s->aspect_ratio_info]; + } + skip_bits(gb, 4); /* frame_rate_code */ + skip_bits(gb, 15); /* first_half_bit_rate */ + check_marker(s->avctx, gb, "after first_half_bit_rate"); + skip_bits(gb, 15); /* latter_half_bit_rate */ + check_marker(s->avctx, gb, "after latter_half_bit_rate"); + skip_bits(gb, 15); /* first_half_vbv_buffer_size */ + check_marker(s->avctx, gb, "after first_half_vbv_buffer_size"); + skip_bits(gb, 3); /* latter_half_vbv_buffer_size */ + skip_bits(gb, 11); /* first_half_vbv_buffer_size */ + check_marker(s->avctx, gb, "after first_half_vbv_buffer_size"); + skip_bits(gb, 15); /* latter_half_vbv_occupancy */ + check_marker(s->avctx, gb, "after latter_half_vbv_occupancy"); + s->low_delay = get_bits1(gb); + s->mpeg_quant = get_bits1(gb); /* mpeg2_stream */ + + next_start_code_studio(gb); + extension_and_user_data(s, gb, 2); + } + } + + return 0; +} + /** * Decode MPEG-4 headers. * @return <0 if no VOP found (or a damaged one) @@ -2721,6 +3187,16 @@ int ff_mpeg4_decode_picture_header(Mpeg4DecContext *ctx, GetBitContext *gb) mpeg4_decode_gop_header(s, gb); } else if (startcode == VOS_STARTCODE) { mpeg4_decode_profile_level(s, gb); + if (s->avctx->profile == FF_PROFILE_MPEG4_SIMPLE_STUDIO && + (s->avctx->level > 0 && s->avctx->level < 9)) { + s->studio_profile = 1; + next_start_code_studio(gb); + extension_and_user_data(s, gb, 0); + + if ((ret = decode_studiovisualobject(ctx, gb)) < 0) + return ret; + break; + } } else if (startcode == VISUAL_OBJ_STARTCODE) { mpeg4_decode_visual_object(s, gb); } else if (startcode == VOP_STARTCODE) { @@ -2736,7 +3212,10 @@ end: s->low_delay = 1; s->avctx->has_b_frames = !s->low_delay; - return decode_vop_header(ctx, gb); + if (s->studio_profile) + return decode_studio_vop_header(ctx, gb); + else + return decode_vop_header(ctx, gb); } av_cold void ff_mpeg4videodec_static_init(void) { @@ -2836,6 +3315,37 @@ static int mpeg4_update_thread_context(AVCodecContext *dst, } #endif +static av_cold int init_studio_vlcs(Mpeg4DecContext *ctx) +{ + int i, ret; + + for (i = 0; i < 12; i++) { + ret = init_vlc(&ctx->studio_intra_tab[i], STUDIO_INTRA_BITS, 22, + &ff_mpeg4_studio_intra[i][0][1], 4, 2, + &ff_mpeg4_studio_intra[i][0][0], 4, 2, + 0); + + if (ret < 0) + return ret; + } + + ret = init_vlc(&ctx->studio_luma_dc, STUDIO_INTRA_BITS, 19, + &ff_mpeg4_studio_dc_luma[0][1], 4, 2, + &ff_mpeg4_studio_dc_luma[0][0], 4, 2, + 0); + if (ret < 0) + return ret; + + ret = init_vlc(&ctx->studio_chroma_dc, STUDIO_INTRA_BITS, 19, + &ff_mpeg4_studio_dc_chroma[0][1], 4, 2, + &ff_mpeg4_studio_dc_chroma[0][0], 4, 2, + 0); + if (ret < 0) + return ret; + + return 0; +} + static av_cold int decode_init(AVCodecContext *avctx) { Mpeg4DecContext *ctx = avctx->priv_data; @@ -2851,6 +3361,8 @@ static av_cold int decode_init(AVCodecContext *avctx) return ret; ff_mpeg4videodec_static_init(); + if ((ret = init_studio_vlcs(ctx)) < 0) + return ret; s->h263_pred = 1; s->low_delay = 0; /* default, might be overridden in the vol header during header parsing */ diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c index 18c3a87eda..45ea0f09e9 100644 --- a/libavcodec/mpegvideo.c +++ b/libavcodec/mpegvideo.c @@ -386,6 +386,9 @@ static int init_duplicate_context(MpegEncContext *s) for (i = 0; i < 12; i++) { s->pblocks[i] = &s->block[i]; } + + FF_ALLOCZ_OR_GOTO(s->avctx, s->block32, sizeof(*s->block32), fail) + if (s->avctx->codec_tag == AV_RL32("VCR2")) { // exchange uv FFSWAP(void *, s->pblocks[4], s->pblocks[5]); @@ -421,6 +424,7 @@ static void free_duplicate_context(MpegEncContext *s) av_freep(&s->me.map); av_freep(&s->me.score_map); av_freep(&s->blocks); + av_freep(&s->block32); av_freep(&s->ac_val_base); s->block = NULL; } @@ -438,6 +442,7 @@ static void backup_duplicate_context(MpegEncContext *bak, MpegEncContext *src) COPY(me.score_map); COPY(blocks); COPY(block); + COPY(block32); COPY(start_mb_y); COPY(end_mb_y); COPY(me.map_generation); @@ -811,6 +816,7 @@ static void clear_context(MpegEncContext *s) s->dct_error_sum = NULL; s->block = NULL; s->blocks = NULL; + s->block32 = NULL; memset(s->pblocks, 0, sizeof(s->pblocks)); s->ac_val_base = NULL; s->ac_val[0] = @@ -2120,8 +2126,31 @@ void mpv_reconstruct_mb_internal(MpegEncContext *s, int16_t block[12][64], ff_wmv2_add_mb(s, block, dest_y, dest_cb, dest_cr); } } else { + /* Only MPEG-4 Simple Studio Profile is supported in > 8-bit mode. + TODO: Integrate 10-bit properly into mpegvideo.c so that ER works properly */ + if (s->avctx->bits_per_raw_sample > 8){ + const int act_block_size = block_size * 2; + s->idsp.idct_put(dest_y, dct_linesize, (int16_t*)(*s->block32)[0]); + s->idsp.idct_put(dest_y + act_block_size, dct_linesize, (int16_t*)(*s->block32)[1]); + s->idsp.idct_put(dest_y + dct_offset, dct_linesize, (int16_t*)(*s->block32)[2]); + s->idsp.idct_put(dest_y + dct_offset + act_block_size, dct_linesize, (int16_t*)(*s->block32)[3]); + + dct_linesize = uvlinesize << s->interlaced_dct; + dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize*block_size; + + s->idsp.idct_put(dest_cb, dct_linesize, (int16_t*)(*s->block32)[4]); + s->idsp.idct_put(dest_cr, dct_linesize, (int16_t*)(*s->block32)[5]); + s->idsp.idct_put(dest_cb + dct_offset, dct_linesize, (int16_t*)(*s->block32)[6]); + s->idsp.idct_put(dest_cr + dct_offset, dct_linesize, (int16_t*)(*s->block32)[7]); + if(!s->chroma_x_shift){//Chroma444 + s->idsp.idct_put(dest_cb + act_block_size, dct_linesize, (int16_t*)(*s->block32)[8]); + s->idsp.idct_put(dest_cr + act_block_size, dct_linesize, (int16_t*)(*s->block32)[9]); + s->idsp.idct_put(dest_cb + act_block_size + dct_offset, dct_linesize, (int16_t*)(*s->block32)[10]); + s->idsp.idct_put(dest_cr + act_block_size + dct_offset, dct_linesize, (int16_t*)(*s->block32)[11]); + } + } /* dct only in intra block */ - if(s->encoding || !(s->codec_id==AV_CODEC_ID_MPEG1VIDEO || s->codec_id==AV_CODEC_ID_MPEG2VIDEO)){ + else if(s->encoding || !(s->codec_id==AV_CODEC_ID_MPEG1VIDEO || s->codec_id==AV_CODEC_ID_MPEG2VIDEO)){ put_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale); put_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale); put_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale); @@ -2202,7 +2231,8 @@ void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h) void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename const int linesize = s->current_picture.f->linesize[0]; //not s->linesize as this would be wrong for field pics const int uvlinesize = s->current_picture.f->linesize[1]; - const int mb_size= 4 - s->avctx->lowres; + const int width_of_mb = (4 + (s->avctx->bits_per_raw_sample > 8)) - s->avctx->lowres; + const int height_of_mb = 4 - s->avctx->lowres; s->block_index[0]= s->b8_stride*(s->mb_y*2 ) - 2 + s->mb_x*2; s->block_index[1]= s->b8_stride*(s->mb_y*2 ) - 1 + s->mb_x*2; @@ -2212,20 +2242,20 @@ void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename s->block_index[5]= s->mb_stride*(s->mb_y + s->mb_height + 2) + s->b8_stride*s->mb_height*2 + s->mb_x - 1; //block_index is not used by mpeg2, so it is not affected by chroma_format - s->dest[0] = s->current_picture.f->data[0] + (int)((s->mb_x - 1U) << mb_size); - s->dest[1] = s->current_picture.f->data[1] + (int)((s->mb_x - 1U) << (mb_size - s->chroma_x_shift)); - s->dest[2] = s->current_picture.f->data[2] + (int)((s->mb_x - 1U) << (mb_size - s->chroma_x_shift)); + s->dest[0] = s->current_picture.f->data[0] + (int)((s->mb_x - 1U) << width_of_mb); + s->dest[1] = s->current_picture.f->data[1] + (int)((s->mb_x - 1U) << (width_of_mb - s->chroma_x_shift)); + s->dest[2] = s->current_picture.f->data[2] + (int)((s->mb_x - 1U) << (width_of_mb - s->chroma_x_shift)); if(!(s->pict_type==AV_PICTURE_TYPE_B && s->avctx->draw_horiz_band && s->picture_structure==PICT_FRAME)) { if(s->picture_structure==PICT_FRAME){ - s->dest[0] += s->mb_y * linesize << mb_size; - s->dest[1] += s->mb_y * uvlinesize << (mb_size - s->chroma_y_shift); - s->dest[2] += s->mb_y * uvlinesize << (mb_size - s->chroma_y_shift); + s->dest[0] += s->mb_y * linesize << height_of_mb; + s->dest[1] += s->mb_y * uvlinesize << (height_of_mb - s->chroma_y_shift); + s->dest[2] += s->mb_y * uvlinesize << (height_of_mb - s->chroma_y_shift); }else{ - s->dest[0] += (s->mb_y>>1) * linesize << mb_size; - s->dest[1] += (s->mb_y>>1) * uvlinesize << (mb_size - s->chroma_y_shift); - s->dest[2] += (s->mb_y>>1) * uvlinesize << (mb_size - s->chroma_y_shift); + s->dest[0] += (s->mb_y>>1) * linesize << height_of_mb; + s->dest[1] += (s->mb_y>>1) * uvlinesize << (height_of_mb - s->chroma_y_shift); + s->dest[2] += (s->mb_y>>1) * uvlinesize << (height_of_mb - s->chroma_y_shift); av_assert1((s->mb_y&1) == (s->picture_structure == PICT_BOTTOM_FIELD)); } } diff --git a/libavcodec/mpegvideo.h b/libavcodec/mpegvideo.h index e800e4a3b8..541909cbb1 100644 --- a/libavcodec/mpegvideo.h +++ b/libavcodec/mpegvideo.h @@ -45,6 +45,7 @@ #include "mpegpicture.h" #include "mpegvideodsp.h" #include "mpegvideoencdsp.h" +#include "mpegvideodata.h" #include "pixblockdsp.h" #include "put_bits.h" #include "ratecontrol.h" @@ -71,6 +72,8 @@ #define SLICE_MAX_START_CODE 0x000001af #define EXT_START_CODE 0x000001b5 #define USER_START_CODE 0x000001b2 +#define SLICE_START_CODE 0x000001b7 + /** * MpegEncContext. @@ -378,6 +381,8 @@ typedef struct MpegEncContext { int custom_pcf; /* MPEG-4 specific */ + int studio_profile; + int dct_precision; ///< number of bits to represent the fractional part of time (encoder only) int time_increment_bits; int last_time_base; @@ -501,7 +506,10 @@ typedef struct MpegEncContext { int16_t (*block)[64]; ///< points to one of the following blocks int16_t (*blocks)[12][64]; // for HQ mode we need to keep the best block - int (*decode_mb)(struct MpegEncContext *s, int16_t block[6][64]); // used by some codecs to avoid a switch() + int (*decode_mb)(struct MpegEncContext *s, int16_t block[12][64]); // used by some codecs to avoid a switch() + + int32_t (*block32)[12][64]; + #define SLICE_OK 0 #define SLICE_ERROR -1 #define SLICE_END -2 ///> s->avctx->lowres; + const int bytes_per_pixel = 1 + (s->avctx->bits_per_raw_sample > 8); + const int block_size= (8*bytes_per_pixel) >> s->avctx->lowres; s->block_index[0]+=2; s->block_index[1]+=2; @@ -738,8 +747,8 @@ static inline void ff_update_block_index(MpegEncContext *s){ s->block_index[4]++; s->block_index[5]++; s->dest[0]+= 2*block_size; - s->dest[1]+= block_size; - s->dest[2]+= block_size; + s->dest[1]+= (2 >> s->chroma_x_shift) * block_size; + s->dest[2]+= (2 >> s->chroma_x_shift) * block_size; } static inline int get_bits_diff(MpegEncContext *s){ @@ -751,4 +760,13 @@ static inline int get_bits_diff(MpegEncContext *s){ return bits - last; } +static inline int mpeg_get_qscale(MpegEncContext *s) +{ + int qscale = get_bits(&s->gb, 5); + if (s->q_scale_type) + return ff_mpeg2_non_linear_qscale[qscale]; + else + return qscale << 1; +} + #endif /* AVCODEC_MPEGVIDEO_H */ diff --git a/libavcodec/x86/idctdsp_init.c b/libavcodec/x86/idctdsp_init.c index 162560d411..9103b92ce7 100644 --- a/libavcodec/x86/idctdsp_init.c +++ b/libavcodec/x86/idctdsp_init.c @@ -123,6 +123,7 @@ av_cold void ff_idctdsp_init_x86(IDCTDSPContext *c, AVCodecContext *avctx, } if (avctx->bits_per_raw_sample == 10 && + avctx->codec_id != AV_CODEC_ID_MPEG4 && (avctx->idct_algo == FF_IDCT_AUTO || avctx->idct_algo == FF_IDCT_SIMPLEAUTO || avctx->idct_algo == FF_IDCT_SIMPLE)) {