diff options
Diffstat (limited to 'libavcodec/dnxhddec.c')
-rw-r--r-- | libavcodec/dnxhddec.c | 99 |
1 files changed, 70 insertions, 29 deletions
diff --git a/libavcodec/dnxhddec.c b/libavcodec/dnxhddec.c index eb00e86..cc011c4 100644 --- a/libavcodec/dnxhddec.c +++ b/libavcodec/dnxhddec.c @@ -5,20 +5,20 @@ * * 10 bit support added by MirriAd Ltd, Joseph Artsimovich <joseph@mirriad.com> * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * FFmpeg 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, + * FFmpeg 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 + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -30,13 +30,15 @@ #include "dnxhddata.h" #include "idctdsp.h" #include "internal.h" +#include "thread.h" typedef struct DNXHDContext { AVCodecContext *avctx; GetBitContext gb; BlockDSPContext bdsp; - int cid; ///< compression id + int64_t cid; ///< compression id unsigned int width, height; + enum AVPixelFormat pix_fmt; unsigned int mb_width, mb_height; uint32_t mb_scan_index[68]; /* max for 1080p */ int cur_field; ///< current interlaced field @@ -50,6 +52,9 @@ typedef struct DNXHDContext { int is_444; void (*decode_dct_block)(struct DNXHDContext *ctx, int16_t *block, int n, int qscale); + int last_qscale; + int luma_scale[64]; + int chroma_scale[64]; } DNXHDContext; #define DNXHD_VLC_BITS 9 @@ -67,10 +72,11 @@ static av_cold int dnxhd_decode_init(AVCodecContext *avctx) DNXHDContext *ctx = avctx->priv_data; ctx->avctx = avctx; + ctx->cid = -1; return 0; } -static int dnxhd_init_vlc(DNXHDContext *ctx, int cid) +static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid) { if (cid != ctx->cid) { int index; @@ -79,6 +85,10 @@ static int dnxhd_init_vlc(DNXHDContext *ctx, int cid) av_log(ctx->avctx, AV_LOG_ERROR, "unsupported cid %d\n", cid); return AVERROR(ENOSYS); } + if (ff_dnxhd_cid_table[index].bit_depth != ctx->bit_depth) { + av_log(ctx->avctx, AV_LOG_ERROR, "bit depth mismatches %d %d\n", ff_dnxhd_cid_table[index].bit_depth, ctx->bit_depth); + return AVERROR_INVALIDDATA; + } ctx->cid_table = &ff_dnxhd_cid_table[index]; ff_free_vlc(&ctx->ac_vlc); @@ -126,6 +136,8 @@ static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame, frame->top_field_first = first_field ^ ctx->cur_field; av_log(ctx->avctx, AV_LOG_DEBUG, "interlaced %d, cur field %d\n", buf[5] & 3, ctx->cur_field); + } else { + ctx->cur_field = 0; } ctx->height = AV_RB16(buf + 0x18); @@ -142,16 +154,18 @@ static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame, if (buf[0x4] == 0x2) { ctx->decode_dct_block = dnxhd_decode_dct_block_10_444; - ctx->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; + ctx->pix_fmt = AV_PIX_FMT_YUV444P10; ctx->is_444 = 1; } else { ctx->decode_dct_block = dnxhd_decode_dct_block_10; - ctx->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; + ctx->pix_fmt = AV_PIX_FMT_YUV422P10; + ctx->is_444 = 0; } } else if (buf[0x21] == 0x38) { /* 8 bit */ ctx->bit_depth = ctx->avctx->bits_per_raw_sample = 8; - ctx->avctx->pix_fmt = AV_PIX_FMT_YUV422P; + ctx->pix_fmt = AV_PIX_FMT_YUV422P; + ctx->is_444 = 0; ctx->decode_dct_block = dnxhd_decode_dct_block_8; } else { av_log(ctx->avctx, AV_LOG_ERROR, "invalid bit depth value (%d).\n", @@ -199,7 +213,7 @@ static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame, for (i = 0; i < ctx->mb_height; i++) { ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i << 2)); av_dlog(ctx->avctx, "mb scan index %d\n", ctx->mb_scan_index[i]); - if (buf_size < ctx->mb_scan_index[i] + 0x280) { + if (buf_size < ctx->mb_scan_index[i] + 0x280LL) { av_log(ctx->avctx, AV_LOG_ERROR, "invalid mb scan index (%d < %d).\n", buf_size, ctx->mb_scan_index[i] + 0x280); @@ -217,24 +231,32 @@ static av_always_inline void dnxhd_decode_dct_block(DNXHDContext *ctx, int level_bias, int level_shift) { - int i, j, index1, index2, len; + int i, j, index1, index2, len, flags; int level, component, sign; + const int *scale; const uint8_t *weight_matrix; + const uint8_t *ac_level = ctx->cid_table->ac_level; + const uint8_t *ac_flags = ctx->cid_table->ac_flags; + const int eob_index = ctx->cid_table->eob_index; OPEN_READER(bs, &ctx->gb); if (!ctx->is_444) { if (n & 2) { component = 1 + (n & 1); + scale = ctx->chroma_scale; weight_matrix = ctx->cid_table->chroma_weight; } else { component = 0; + scale = ctx->luma_scale; weight_matrix = ctx->cid_table->luma_weight; } } else { component = (n >> 1) % 3; if (component) { + scale = ctx->chroma_scale; weight_matrix = ctx->cid_table->chroma_weight; } else { + scale = ctx->luma_scale; weight_matrix = ctx->cid_table->luma_weight; } } @@ -250,41 +272,47 @@ static av_always_inline void dnxhd_decode_dct_block(DNXHDContext *ctx, } block[0] = ctx->last_dc[component]; - for (i = 1; ; i++) { - UPDATE_CACHE(bs, &ctx->gb); - GET_VLC(index1, bs, &ctx->gb, ctx->ac_vlc.table, - DNXHD_VLC_BITS, 2); - level = ctx->cid_table->ac_level[index1]; - if (!level) /* EOB */ - break; + i = 0; + + UPDATE_CACHE(bs, &ctx->gb); + GET_VLC(index1, bs, &ctx->gb, ctx->ac_vlc.table, + DNXHD_VLC_BITS, 2); + + while (index1 != eob_index) { + level = ac_level[index1]; + flags = ac_flags[index1]; sign = SHOW_SBITS(bs, &ctx->gb, 1); SKIP_BITS(bs, &ctx->gb, 1); - if (ctx->cid_table->ac_index_flag[index1]) { - level += SHOW_UBITS(bs, &ctx->gb, index_bits) << 6; + if (flags & 1) { + level += SHOW_UBITS(bs, &ctx->gb, index_bits) << 7; SKIP_BITS(bs, &ctx->gb, index_bits); } - if (ctx->cid_table->ac_run_flag[index1]) { + if (flags & 2) { UPDATE_CACHE(bs, &ctx->gb); GET_VLC(index2, bs, &ctx->gb, ctx->run_vlc.table, DNXHD_VLC_BITS, 2); i += ctx->cid_table->run[index2]; } - if (i > 63) { + if (++i > 63) { av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i); break; } j = ctx->scantable.permutated[i]; - level = (2 * level + 1) * qscale * weight_matrix[i]; + level *= scale[i]; if (level_bias < 32 || weight_matrix[i] != level_bias) level += level_bias; level >>= level_shift; block[j] = (level ^ sign) - sign; + + UPDATE_CACHE(bs, &ctx->gb); + GET_VLC(index1, bs, &ctx->gb, ctx->ac_vlc.table, + DNXHD_VLC_BITS, 2); } CLOSE_READER(bs, &ctx->gb); @@ -321,6 +349,14 @@ static int dnxhd_decode_macroblock(DNXHDContext *ctx, AVFrame *frame, qscale = get_bits(&ctx->gb, 11); skip_bits1(&ctx->gb); + if (qscale != ctx->last_qscale) { + for (i = 0; i < 64; i++) { + ctx->luma_scale[i] = qscale * ctx->cid_table->luma_weight[i]; + ctx->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i]; + } + ctx->last_qscale = qscale; + } + for (i = 0; i < 8; i++) { ctx->bdsp.clear_block(ctx->blocks[i]); ctx->decode_dct_block(ctx, ctx->blocks[i], i, qscale); @@ -341,7 +377,7 @@ static int dnxhd_decode_macroblock(DNXHDContext *ctx, AVFrame *frame, dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444)); dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444)); - if (ctx->cur_field) { + if (frame->interlaced_frame && ctx->cur_field) { dest_y += frame->linesize[0]; dest_u += frame->linesize[1]; dest_v += frame->linesize[2]; @@ -408,6 +444,7 @@ static int dnxhd_decode_frame(AVCodecContext *avctx, void *data, const uint8_t *buf = avpkt->data; int buf_size = avpkt->size; DNXHDContext *ctx = avctx->priv_data; + ThreadFrame frame = { .f = data }; AVFrame *picture = data; int first_field = 1; int ret; @@ -424,16 +461,20 @@ decode_coding_unit: avctx->width, avctx->height, ctx->width, ctx->height); first_field = 1; } + if (avctx->pix_fmt != AV_PIX_FMT_NONE && avctx->pix_fmt != ctx->pix_fmt) { + av_log(avctx, AV_LOG_WARNING, "pix_fmt changed: %s -> %s\n", + av_get_pix_fmt_name(avctx->pix_fmt), av_get_pix_fmt_name(ctx->pix_fmt)); + first_field = 1; + } + avctx->pix_fmt = ctx->pix_fmt; ret = ff_set_dimensions(avctx, ctx->width, ctx->height); if (ret < 0) return ret; if (first_field) { - if ((ret = ff_get_buffer(avctx, picture, 0)) < 0) { - av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); + if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0) return ret; - } picture->pict_type = AV_PICTURE_TYPE_I; picture->key_frame = 1; } @@ -448,7 +489,7 @@ decode_coding_unit: } *got_frame = 1; - return buf_size; + return avpkt->size; } static av_cold int dnxhd_decode_close(AVCodecContext *avctx) @@ -470,5 +511,5 @@ AVCodec ff_dnxhd_decoder = { .init = dnxhd_decode_init, .close = dnxhd_decode_close, .decode = dnxhd_decode_frame, - .capabilities = CODEC_CAP_DR1, + .capabilities = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS, }; |