| /* |
| * Copyright (c) 2010-2011 Maxim Poliakovski |
| * Copyright (c) 2010-2011 Elvis Presley |
| * |
| * This file is part of FFmpeg. |
| * |
| * 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. |
| * |
| * 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 FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /** |
| * @file |
| * Known FOURCCs: 'apch' (HQ), 'apcn' (SD), 'apcs' (LT), 'acpo' (Proxy), 'ap4h' (4444) |
| */ |
| |
| //#define DEBUG |
| |
| #define LONG_BITSTREAM_READER |
| |
| #include "libavutil/internal.h" |
| #include "avcodec.h" |
| #include "get_bits.h" |
| #include "idctdsp.h" |
| #include "internal.h" |
| #include "profiles.h" |
| #include "simple_idct.h" |
| #include "proresdec.h" |
| #include "proresdata.h" |
| #include "thread.h" |
| |
| static void permute(uint8_t *dst, const uint8_t *src, const uint8_t permutation[64]) |
| { |
| int i; |
| for (i = 0; i < 64; i++) |
| dst[i] = permutation[src[i]]; |
| } |
| |
| #define ALPHA_SHIFT_16_TO_10(alpha_val) (alpha_val >> 6) |
| #define ALPHA_SHIFT_8_TO_10(alpha_val) ((alpha_val << 2) | (alpha_val >> 6)) |
| #define ALPHA_SHIFT_16_TO_12(alpha_val) (alpha_val >> 4) |
| #define ALPHA_SHIFT_8_TO_12(alpha_val) ((alpha_val << 4) | (alpha_val >> 4)) |
| |
| static void inline unpack_alpha(GetBitContext *gb, uint16_t *dst, int num_coeffs, |
| const int num_bits, const int decode_precision) { |
| const int mask = (1 << num_bits) - 1; |
| int i, idx, val, alpha_val; |
| |
| idx = 0; |
| alpha_val = mask; |
| do { |
| do { |
| if (get_bits1(gb)) { |
| val = get_bits(gb, num_bits); |
| } else { |
| int sign; |
| val = get_bits(gb, num_bits == 16 ? 7 : 4); |
| sign = val & 1; |
| val = (val + 2) >> 1; |
| if (sign) |
| val = -val; |
| } |
| alpha_val = (alpha_val + val) & mask; |
| if (num_bits == 16) { |
| if (decode_precision == 10) { |
| dst[idx++] = ALPHA_SHIFT_16_TO_10(alpha_val); |
| } else { /* 12b */ |
| dst[idx++] = ALPHA_SHIFT_16_TO_12(alpha_val); |
| } |
| } else { |
| if (decode_precision == 10) { |
| dst[idx++] = ALPHA_SHIFT_8_TO_10(alpha_val); |
| } else { /* 12b */ |
| dst[idx++] = ALPHA_SHIFT_8_TO_12(alpha_val); |
| } |
| } |
| if (idx >= num_coeffs) |
| break; |
| } while (get_bits_left(gb)>0 && get_bits1(gb)); |
| val = get_bits(gb, 4); |
| if (!val) |
| val = get_bits(gb, 11); |
| if (idx + val > num_coeffs) |
| val = num_coeffs - idx; |
| if (num_bits == 16) { |
| for (i = 0; i < val; i++) { |
| if (decode_precision == 10) { |
| dst[idx++] = ALPHA_SHIFT_16_TO_10(alpha_val); |
| } else { /* 12b */ |
| dst[idx++] = ALPHA_SHIFT_16_TO_12(alpha_val); |
| } |
| } |
| } else { |
| for (i = 0; i < val; i++) { |
| if (decode_precision == 10) { |
| dst[idx++] = ALPHA_SHIFT_8_TO_10(alpha_val); |
| } else { /* 12b */ |
| dst[idx++] = ALPHA_SHIFT_8_TO_12(alpha_val); |
| } |
| } |
| } |
| } while (idx < num_coeffs); |
| } |
| |
| static void unpack_alpha_10(GetBitContext *gb, uint16_t *dst, int num_coeffs, |
| const int num_bits) |
| { |
| if (num_bits == 16) { |
| unpack_alpha(gb, dst, num_coeffs, 16, 10); |
| } else { /* 8 bits alpha */ |
| unpack_alpha(gb, dst, num_coeffs, 8, 10); |
| } |
| } |
| |
| static void unpack_alpha_12(GetBitContext *gb, uint16_t *dst, int num_coeffs, |
| const int num_bits) |
| { |
| if (num_bits == 16) { |
| unpack_alpha(gb, dst, num_coeffs, 16, 12); |
| } else { /* 8 bits alpha */ |
| unpack_alpha(gb, dst, num_coeffs, 8, 12); |
| } |
| } |
| |
| static av_cold int decode_init(AVCodecContext *avctx) |
| { |
| int ret = 0; |
| ProresContext *ctx = avctx->priv_data; |
| uint8_t idct_permutation[64]; |
| |
| avctx->bits_per_raw_sample = 10; |
| |
| switch (avctx->codec_tag) { |
| case MKTAG('a','p','c','o'): |
| avctx->profile = FF_PROFILE_PRORES_PROXY; |
| break; |
| case MKTAG('a','p','c','s'): |
| avctx->profile = FF_PROFILE_PRORES_LT; |
| break; |
| case MKTAG('a','p','c','n'): |
| avctx->profile = FF_PROFILE_PRORES_STANDARD; |
| break; |
| case MKTAG('a','p','c','h'): |
| avctx->profile = FF_PROFILE_PRORES_HQ; |
| break; |
| case MKTAG('a','p','4','h'): |
| avctx->profile = FF_PROFILE_PRORES_4444; |
| avctx->bits_per_raw_sample = 12; |
| break; |
| case MKTAG('a','p','4','x'): |
| avctx->profile = FF_PROFILE_PRORES_XQ; |
| avctx->bits_per_raw_sample = 12; |
| break; |
| default: |
| avctx->profile = FF_PROFILE_UNKNOWN; |
| av_log(avctx, AV_LOG_WARNING, "Unknown prores profile %d\n", avctx->codec_tag); |
| } |
| |
| if (avctx->bits_per_raw_sample == 10) { |
| av_log(avctx, AV_LOG_DEBUG, "Auto bitdepth precision. Use 10b decoding based on codec tag.\n"); |
| } else { /* 12b */ |
| av_log(avctx, AV_LOG_DEBUG, "Auto bitdepth precision. Use 12b decoding based on codec tag.\n"); |
| } |
| |
| ff_blockdsp_init(&ctx->bdsp, avctx); |
| ret = ff_proresdsp_init(&ctx->prodsp, avctx); |
| if (ret < 0) { |
| av_log(avctx, AV_LOG_ERROR, "Fail to init proresdsp for bits per raw sample %d\n", avctx->bits_per_raw_sample); |
| return ret; |
| } |
| |
| ff_init_scantable_permutation(idct_permutation, |
| ctx->prodsp.idct_permutation_type); |
| |
| permute(ctx->progressive_scan, ff_prores_progressive_scan, idct_permutation); |
| permute(ctx->interlaced_scan, ff_prores_interlaced_scan, idct_permutation); |
| |
| if (avctx->bits_per_raw_sample == 10){ |
| ctx->unpack_alpha = unpack_alpha_10; |
| } else if (avctx->bits_per_raw_sample == 12){ |
| ctx->unpack_alpha = unpack_alpha_12; |
| } else { |
| av_log(avctx, AV_LOG_ERROR, "Fail to set unpack_alpha for bits per raw sample %d\n", avctx->bits_per_raw_sample); |
| return AVERROR_BUG; |
| } |
| return ret; |
| } |
| |
| static int decode_frame_header(ProresContext *ctx, const uint8_t *buf, |
| const int data_size, AVCodecContext *avctx) |
| { |
| int hdr_size, width, height, flags; |
| int version; |
| const uint8_t *ptr; |
| |
| hdr_size = AV_RB16(buf); |
| ff_dlog(avctx, "header size %d\n", hdr_size); |
| if (hdr_size > data_size) { |
| av_log(avctx, AV_LOG_ERROR, "error, wrong header size\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| version = AV_RB16(buf + 2); |
| ff_dlog(avctx, "%.4s version %d\n", buf+4, version); |
| if (version > 1) { |
| av_log(avctx, AV_LOG_ERROR, "unsupported version: %d\n", version); |
| return AVERROR_PATCHWELCOME; |
| } |
| |
| width = AV_RB16(buf + 8); |
| height = AV_RB16(buf + 10); |
| |
| if (width != avctx->width || height != avctx->height) { |
| int ret; |
| |
| av_log(avctx, AV_LOG_WARNING, "picture resolution change: %dx%d -> %dx%d\n", |
| avctx->width, avctx->height, width, height); |
| if ((ret = ff_set_dimensions(avctx, width, height)) < 0) |
| return ret; |
| } |
| |
| ctx->frame_type = (buf[12] >> 2) & 3; |
| ctx->alpha_info = buf[17] & 0xf; |
| |
| if (ctx->alpha_info > 2) { |
| av_log(avctx, AV_LOG_ERROR, "Invalid alpha mode %d\n", ctx->alpha_info); |
| return AVERROR_INVALIDDATA; |
| } |
| if (avctx->skip_alpha) ctx->alpha_info = 0; |
| |
| ff_dlog(avctx, "frame type %d\n", ctx->frame_type); |
| |
| if (ctx->frame_type == 0) { |
| ctx->scan = ctx->progressive_scan; // permuted |
| } else { |
| ctx->scan = ctx->interlaced_scan; // permuted |
| ctx->frame->interlaced_frame = 1; |
| ctx->frame->top_field_first = ctx->frame_type == 1; |
| } |
| |
| if (ctx->alpha_info) { |
| if (avctx->bits_per_raw_sample == 10) { |
| avctx->pix_fmt = (buf[12] & 0xC0) == 0xC0 ? AV_PIX_FMT_YUVA444P10 : AV_PIX_FMT_YUVA422P10; |
| } else { /* 12b */ |
| avctx->pix_fmt = (buf[12] & 0xC0) == 0xC0 ? AV_PIX_FMT_YUVA444P12 : AV_PIX_FMT_YUVA422P12; |
| } |
| } else { |
| if (avctx->bits_per_raw_sample == 10) { |
| avctx->pix_fmt = (buf[12] & 0xC0) == 0xC0 ? AV_PIX_FMT_YUV444P10 : AV_PIX_FMT_YUV422P10; |
| } else { /* 12b */ |
| avctx->pix_fmt = (buf[12] & 0xC0) == 0xC0 ? AV_PIX_FMT_YUV444P12 : AV_PIX_FMT_YUV422P12; |
| } |
| } |
| |
| avctx->color_primaries = buf[14]; |
| avctx->color_trc = buf[15]; |
| avctx->colorspace = buf[16]; |
| avctx->color_range = AVCOL_RANGE_MPEG; |
| |
| ptr = buf + 20; |
| flags = buf[19]; |
| ff_dlog(avctx, "flags %x\n", flags); |
| |
| if (flags & 2) { |
| if(buf + data_size - ptr < 64) { |
| av_log(avctx, AV_LOG_ERROR, "Header truncated\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| permute(ctx->qmat_luma, ctx->prodsp.idct_permutation, ptr); |
| ptr += 64; |
| } else { |
| memset(ctx->qmat_luma, 4, 64); |
| } |
| |
| if (flags & 1) { |
| if(buf + data_size - ptr < 64) { |
| av_log(avctx, AV_LOG_ERROR, "Header truncated\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| permute(ctx->qmat_chroma, ctx->prodsp.idct_permutation, ptr); |
| } else { |
| memcpy(ctx->qmat_chroma, ctx->qmat_luma, 64); |
| } |
| |
| return hdr_size; |
| } |
| |
| static int decode_picture_header(AVCodecContext *avctx, const uint8_t *buf, const int buf_size) |
| { |
| ProresContext *ctx = avctx->priv_data; |
| int i, hdr_size, slice_count; |
| unsigned pic_data_size; |
| int log2_slice_mb_width, log2_slice_mb_height; |
| int slice_mb_count, mb_x, mb_y; |
| const uint8_t *data_ptr, *index_ptr; |
| |
| hdr_size = buf[0] >> 3; |
| if (hdr_size < 8 || hdr_size > buf_size) { |
| av_log(avctx, AV_LOG_ERROR, "error, wrong picture header size\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| pic_data_size = AV_RB32(buf + 1); |
| if (pic_data_size > buf_size) { |
| av_log(avctx, AV_LOG_ERROR, "error, wrong picture data size\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| log2_slice_mb_width = buf[7] >> 4; |
| log2_slice_mb_height = buf[7] & 0xF; |
| if (log2_slice_mb_width > 3 || log2_slice_mb_height) { |
| av_log(avctx, AV_LOG_ERROR, "unsupported slice resolution: %dx%d\n", |
| 1 << log2_slice_mb_width, 1 << log2_slice_mb_height); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| ctx->mb_width = (avctx->width + 15) >> 4; |
| if (ctx->frame_type) |
| ctx->mb_height = (avctx->height + 31) >> 5; |
| else |
| ctx->mb_height = (avctx->height + 15) >> 4; |
| |
| // QT ignores the written value |
| // slice_count = AV_RB16(buf + 5); |
| slice_count = ctx->mb_height * ((ctx->mb_width >> log2_slice_mb_width) + |
| av_popcount(ctx->mb_width & (1 << log2_slice_mb_width) - 1)); |
| |
| if (ctx->slice_count != slice_count || !ctx->slices) { |
| av_freep(&ctx->slices); |
| ctx->slice_count = 0; |
| ctx->slices = av_mallocz_array(slice_count, sizeof(*ctx->slices)); |
| if (!ctx->slices) |
| return AVERROR(ENOMEM); |
| ctx->slice_count = slice_count; |
| } |
| |
| if (!slice_count) |
| return AVERROR(EINVAL); |
| |
| if (hdr_size + slice_count*2 > buf_size) { |
| av_log(avctx, AV_LOG_ERROR, "error, wrong slice count\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| // parse slice information |
| index_ptr = buf + hdr_size; |
| data_ptr = index_ptr + slice_count*2; |
| |
| slice_mb_count = 1 << log2_slice_mb_width; |
| mb_x = 0; |
| mb_y = 0; |
| |
| for (i = 0; i < slice_count; i++) { |
| SliceContext *slice = &ctx->slices[i]; |
| |
| slice->data = data_ptr; |
| data_ptr += AV_RB16(index_ptr + i*2); |
| |
| while (ctx->mb_width - mb_x < slice_mb_count) |
| slice_mb_count >>= 1; |
| |
| slice->mb_x = mb_x; |
| slice->mb_y = mb_y; |
| slice->mb_count = slice_mb_count; |
| slice->data_size = data_ptr - slice->data; |
| |
| if (slice->data_size < 6) { |
| av_log(avctx, AV_LOG_ERROR, "error, wrong slice data size\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| mb_x += slice_mb_count; |
| if (mb_x == ctx->mb_width) { |
| slice_mb_count = 1 << log2_slice_mb_width; |
| mb_x = 0; |
| mb_y++; |
| } |
| if (data_ptr > buf + buf_size) { |
| av_log(avctx, AV_LOG_ERROR, "error, slice out of bounds\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| } |
| |
| if (mb_x || mb_y != ctx->mb_height) { |
| av_log(avctx, AV_LOG_ERROR, "error wrong mb count y %d h %d\n", |
| mb_y, ctx->mb_height); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| return pic_data_size; |
| } |
| |
| #define DECODE_CODEWORD(val, codebook, SKIP) \ |
| do { \ |
| unsigned int rice_order, exp_order, switch_bits; \ |
| unsigned int q, buf, bits; \ |
| \ |
| UPDATE_CACHE(re, gb); \ |
| buf = GET_CACHE(re, gb); \ |
| \ |
| /* number of bits to switch between rice and exp golomb */ \ |
| switch_bits = codebook & 3; \ |
| rice_order = codebook >> 5; \ |
| exp_order = (codebook >> 2) & 7; \ |
| \ |
| q = 31 - av_log2(buf); \ |
| \ |
| if (q > switch_bits) { /* exp golomb */ \ |
| bits = exp_order - switch_bits + (q<<1); \ |
| if (bits > FFMIN(MIN_CACHE_BITS, 31)) \ |
| return AVERROR_INVALIDDATA; \ |
| val = SHOW_UBITS(re, gb, bits) - (1 << exp_order) + \ |
| ((switch_bits + 1) << rice_order); \ |
| SKIP(re, gb, bits); \ |
| } else if (rice_order) { \ |
| SKIP_BITS(re, gb, q+1); \ |
| val = (q << rice_order) + SHOW_UBITS(re, gb, rice_order); \ |
| SKIP(re, gb, rice_order); \ |
| } else { \ |
| val = q; \ |
| SKIP(re, gb, q+1); \ |
| } \ |
| } while (0) |
| |
| #define TOSIGNED(x) (((x) >> 1) ^ (-((x) & 1))) |
| |
| #define FIRST_DC_CB 0xB8 |
| |
| static const uint8_t dc_codebook[7] = { 0x04, 0x28, 0x28, 0x4D, 0x4D, 0x70, 0x70}; |
| |
| static av_always_inline int decode_dc_coeffs(GetBitContext *gb, int16_t *out, |
| int blocks_per_slice) |
| { |
| int16_t prev_dc; |
| int code, i, sign; |
| |
| OPEN_READER(re, gb); |
| |
| DECODE_CODEWORD(code, FIRST_DC_CB, LAST_SKIP_BITS); |
| prev_dc = TOSIGNED(code); |
| out[0] = prev_dc; |
| |
| out += 64; // dc coeff for the next block |
| |
| code = 5; |
| sign = 0; |
| for (i = 1; i < blocks_per_slice; i++, out += 64) { |
| DECODE_CODEWORD(code, dc_codebook[FFMIN(code, 6U)], LAST_SKIP_BITS); |
| if(code) sign ^= -(code & 1); |
| else sign = 0; |
| prev_dc += (((code + 1) >> 1) ^ sign) - sign; |
| out[0] = prev_dc; |
| } |
| CLOSE_READER(re, gb); |
| return 0; |
| } |
| |
| // adaptive codebook switching lut according to previous run/level values |
| static const uint8_t run_to_cb[16] = { 0x06, 0x06, 0x05, 0x05, 0x04, 0x29, 0x29, 0x29, 0x29, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x4C }; |
| static const uint8_t lev_to_cb[10] = { 0x04, 0x0A, 0x05, 0x06, 0x04, 0x28, 0x28, 0x28, 0x28, 0x4C }; |
| |
| static av_always_inline int decode_ac_coeffs(AVCodecContext *avctx, GetBitContext *gb, |
| int16_t *out, int blocks_per_slice) |
| { |
| ProresContext *ctx = avctx->priv_data; |
| int block_mask, sign; |
| unsigned pos, run, level; |
| int max_coeffs, i, bits_left; |
| int log2_block_count = av_log2(blocks_per_slice); |
| |
| OPEN_READER(re, gb); |
| UPDATE_CACHE(re, gb); \ |
| run = 4; |
| level = 2; |
| |
| max_coeffs = 64 << log2_block_count; |
| block_mask = blocks_per_slice - 1; |
| |
| for (pos = block_mask;;) { |
| bits_left = gb->size_in_bits - re_index; |
| if (!bits_left || (bits_left < 32 && !SHOW_UBITS(re, gb, bits_left))) |
| break; |
| |
| DECODE_CODEWORD(run, run_to_cb[FFMIN(run, 15)], LAST_SKIP_BITS); |
| pos += run + 1; |
| if (pos >= max_coeffs) { |
| av_log(avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", pos, max_coeffs); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| DECODE_CODEWORD(level, lev_to_cb[FFMIN(level, 9)], SKIP_BITS); |
| level += 1; |
| |
| i = pos >> log2_block_count; |
| |
| sign = SHOW_SBITS(re, gb, 1); |
| SKIP_BITS(re, gb, 1); |
| out[((pos & block_mask) << 6) + ctx->scan[i]] = ((level ^ sign) - sign); |
| } |
| |
| CLOSE_READER(re, gb); |
| return 0; |
| } |
| |
| static int decode_slice_luma(AVCodecContext *avctx, SliceContext *slice, |
| uint16_t *dst, int dst_stride, |
| const uint8_t *buf, unsigned buf_size, |
| const int16_t *qmat) |
| { |
| ProresContext *ctx = avctx->priv_data; |
| LOCAL_ALIGNED_32(int16_t, blocks, [8*4*64]); |
| int16_t *block; |
| GetBitContext gb; |
| int i, blocks_per_slice = slice->mb_count<<2; |
| int ret; |
| |
| for (i = 0; i < blocks_per_slice; i++) |
| ctx->bdsp.clear_block(blocks+(i<<6)); |
| |
| init_get_bits(&gb, buf, buf_size << 3); |
| |
| if ((ret = decode_dc_coeffs(&gb, blocks, blocks_per_slice)) < 0) |
| return ret; |
| if ((ret = decode_ac_coeffs(avctx, &gb, blocks, blocks_per_slice)) < 0) |
| return ret; |
| |
| block = blocks; |
| for (i = 0; i < slice->mb_count; i++) { |
| ctx->prodsp.idct_put(dst, dst_stride, block+(0<<6), qmat); |
| ctx->prodsp.idct_put(dst +8, dst_stride, block+(1<<6), qmat); |
| ctx->prodsp.idct_put(dst+4*dst_stride , dst_stride, block+(2<<6), qmat); |
| ctx->prodsp.idct_put(dst+4*dst_stride+8, dst_stride, block+(3<<6), qmat); |
| block += 4*64; |
| dst += 16; |
| } |
| return 0; |
| } |
| |
| static int decode_slice_chroma(AVCodecContext *avctx, SliceContext *slice, |
| uint16_t *dst, int dst_stride, |
| const uint8_t *buf, unsigned buf_size, |
| const int16_t *qmat, int log2_blocks_per_mb) |
| { |
| ProresContext *ctx = avctx->priv_data; |
| LOCAL_ALIGNED_32(int16_t, blocks, [8*4*64]); |
| int16_t *block; |
| GetBitContext gb; |
| int i, j, blocks_per_slice = slice->mb_count << log2_blocks_per_mb; |
| int ret; |
| |
| for (i = 0; i < blocks_per_slice; i++) |
| ctx->bdsp.clear_block(blocks+(i<<6)); |
| |
| init_get_bits(&gb, buf, buf_size << 3); |
| |
| if ((ret = decode_dc_coeffs(&gb, blocks, blocks_per_slice)) < 0) |
| return ret; |
| if ((ret = decode_ac_coeffs(avctx, &gb, blocks, blocks_per_slice)) < 0) |
| return ret; |
| |
| block = blocks; |
| for (i = 0; i < slice->mb_count; i++) { |
| for (j = 0; j < log2_blocks_per_mb; j++) { |
| ctx->prodsp.idct_put(dst, dst_stride, block+(0<<6), qmat); |
| ctx->prodsp.idct_put(dst+4*dst_stride, dst_stride, block+(1<<6), qmat); |
| block += 2*64; |
| dst += 8; |
| } |
| } |
| return 0; |
| } |
| |
| /** |
| * Decode alpha slice plane. |
| */ |
| static void decode_slice_alpha(ProresContext *ctx, |
| uint16_t *dst, int dst_stride, |
| const uint8_t *buf, int buf_size, |
| int blocks_per_slice) |
| { |
| GetBitContext gb; |
| int i; |
| LOCAL_ALIGNED_32(int16_t, blocks, [8*4*64]); |
| int16_t *block; |
| |
| for (i = 0; i < blocks_per_slice<<2; i++) |
| ctx->bdsp.clear_block(blocks+(i<<6)); |
| |
| init_get_bits(&gb, buf, buf_size << 3); |
| |
| if (ctx->alpha_info == 2) { |
| ctx->unpack_alpha(&gb, blocks, blocks_per_slice * 4 * 64, 16); |
| } else { |
| ctx->unpack_alpha(&gb, blocks, blocks_per_slice * 4 * 64, 8); |
| } |
| |
| block = blocks; |
| |
| for (i = 0; i < 16; i++) { |
| memcpy(dst, block, 16 * blocks_per_slice * sizeof(*dst)); |
| dst += dst_stride >> 1; |
| block += 16 * blocks_per_slice; |
| } |
| } |
| |
| static int decode_slice_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr) |
| { |
| ProresContext *ctx = avctx->priv_data; |
| SliceContext *slice = &ctx->slices[jobnr]; |
| const uint8_t *buf = slice->data; |
| AVFrame *pic = ctx->frame; |
| int i, hdr_size, qscale, log2_chroma_blocks_per_mb; |
| int luma_stride, chroma_stride; |
| int y_data_size, u_data_size, v_data_size, a_data_size; |
| uint8_t *dest_y, *dest_u, *dest_v, *dest_a; |
| LOCAL_ALIGNED_16(int16_t, qmat_luma_scaled, [64]); |
| LOCAL_ALIGNED_16(int16_t, qmat_chroma_scaled,[64]); |
| int mb_x_shift; |
| int ret; |
| uint16_t val_no_chroma; |
| |
| slice->ret = -1; |
| //av_log(avctx, AV_LOG_INFO, "slice %d mb width %d mb x %d y %d\n", |
| // jobnr, slice->mb_count, slice->mb_x, slice->mb_y); |
| |
| // slice header |
| hdr_size = buf[0] >> 3; |
| qscale = av_clip(buf[1], 1, 224); |
| qscale = qscale > 128 ? qscale - 96 << 2: qscale; |
| y_data_size = AV_RB16(buf + 2); |
| u_data_size = AV_RB16(buf + 4); |
| v_data_size = slice->data_size - y_data_size - u_data_size - hdr_size; |
| if (hdr_size > 7) v_data_size = AV_RB16(buf + 6); |
| a_data_size = slice->data_size - y_data_size - u_data_size - |
| v_data_size - hdr_size; |
| |
| if (y_data_size < 0 || u_data_size < 0 || v_data_size < 0 |
| || hdr_size+y_data_size+u_data_size+v_data_size > slice->data_size){ |
| av_log(avctx, AV_LOG_ERROR, "invalid plane data size\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| buf += hdr_size; |
| |
| for (i = 0; i < 64; i++) { |
| qmat_luma_scaled [i] = ctx->qmat_luma [i] * qscale; |
| qmat_chroma_scaled[i] = ctx->qmat_chroma[i] * qscale; |
| } |
| |
| if (ctx->frame_type == 0) { |
| luma_stride = pic->linesize[0]; |
| chroma_stride = pic->linesize[1]; |
| } else { |
| luma_stride = pic->linesize[0] << 1; |
| chroma_stride = pic->linesize[1] << 1; |
| } |
| |
| if (avctx->pix_fmt == AV_PIX_FMT_YUV444P10 || avctx->pix_fmt == AV_PIX_FMT_YUVA444P10 || |
| avctx->pix_fmt == AV_PIX_FMT_YUV444P12 || avctx->pix_fmt == AV_PIX_FMT_YUVA444P12) { |
| mb_x_shift = 5; |
| log2_chroma_blocks_per_mb = 2; |
| } else { |
| mb_x_shift = 4; |
| log2_chroma_blocks_per_mb = 1; |
| } |
| |
| dest_y = pic->data[0] + (slice->mb_y << 4) * luma_stride + (slice->mb_x << 5); |
| dest_u = pic->data[1] + (slice->mb_y << 4) * chroma_stride + (slice->mb_x << mb_x_shift); |
| dest_v = pic->data[2] + (slice->mb_y << 4) * chroma_stride + (slice->mb_x << mb_x_shift); |
| dest_a = pic->data[3] + (slice->mb_y << 4) * luma_stride + (slice->mb_x << 5); |
| |
| if (ctx->frame_type && ctx->first_field ^ ctx->frame->top_field_first) { |
| dest_y += pic->linesize[0]; |
| dest_u += pic->linesize[1]; |
| dest_v += pic->linesize[2]; |
| dest_a += pic->linesize[3]; |
| } |
| |
| ret = decode_slice_luma(avctx, slice, (uint16_t*)dest_y, luma_stride, |
| buf, y_data_size, qmat_luma_scaled); |
| if (ret < 0) |
| return ret; |
| |
| if (!(avctx->flags & AV_CODEC_FLAG_GRAY) && (u_data_size + v_data_size) > 0) { |
| ret = decode_slice_chroma(avctx, slice, (uint16_t*)dest_u, chroma_stride, |
| buf + y_data_size, u_data_size, |
| qmat_chroma_scaled, log2_chroma_blocks_per_mb); |
| if (ret < 0) |
| return ret; |
| |
| ret = decode_slice_chroma(avctx, slice, (uint16_t*)dest_v, chroma_stride, |
| buf + y_data_size + u_data_size, v_data_size, |
| qmat_chroma_scaled, log2_chroma_blocks_per_mb); |
| if (ret < 0) |
| return ret; |
| } |
| else { |
| size_t mb_max_x = slice->mb_count << (mb_x_shift - 1); |
| size_t i, j; |
| if (avctx->bits_per_raw_sample == 10) { |
| val_no_chroma = 511; |
| } else { /* 12b */ |
| val_no_chroma = 511 * 4; |
| } |
| for (i = 0; i < 16; ++i) |
| for (j = 0; j < mb_max_x; ++j) { |
| *(uint16_t*)(dest_u + (i * chroma_stride) + (j << 1)) = val_no_chroma; |
| *(uint16_t*)(dest_v + (i * chroma_stride) + (j << 1)) = val_no_chroma; |
| } |
| } |
| |
| /* decode alpha plane if available */ |
| if (ctx->alpha_info && pic->data[3] && a_data_size) |
| decode_slice_alpha(ctx, (uint16_t*)dest_a, luma_stride, |
| buf + y_data_size + u_data_size + v_data_size, |
| a_data_size, slice->mb_count); |
| |
| slice->ret = 0; |
| return 0; |
| } |
| |
| static int decode_picture(AVCodecContext *avctx) |
| { |
| ProresContext *ctx = avctx->priv_data; |
| int i; |
| int error = 0; |
| |
| avctx->execute2(avctx, decode_slice_thread, NULL, NULL, ctx->slice_count); |
| |
| for (i = 0; i < ctx->slice_count; i++) |
| error += ctx->slices[i].ret < 0; |
| |
| if (error) |
| ctx->frame->decode_error_flags = FF_DECODE_ERROR_INVALID_BITSTREAM; |
| if (error < ctx->slice_count) |
| return 0; |
| |
| return ctx->slices[0].ret; |
| } |
| |
| static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, |
| AVPacket *avpkt) |
| { |
| ProresContext *ctx = avctx->priv_data; |
| ThreadFrame tframe = { .f = data }; |
| AVFrame *frame = data; |
| const uint8_t *buf = avpkt->data; |
| int buf_size = avpkt->size; |
| int frame_hdr_size, pic_size, ret; |
| |
| if (buf_size < 28 || AV_RL32(buf + 4) != AV_RL32("icpf")) { |
| av_log(avctx, AV_LOG_ERROR, "invalid frame header\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| ctx->frame = frame; |
| ctx->frame->pict_type = AV_PICTURE_TYPE_I; |
| ctx->frame->key_frame = 1; |
| ctx->first_field = 1; |
| |
| buf += 8; |
| buf_size -= 8; |
| |
| frame_hdr_size = decode_frame_header(ctx, buf, buf_size, avctx); |
| if (frame_hdr_size < 0) |
| return frame_hdr_size; |
| |
| buf += frame_hdr_size; |
| buf_size -= frame_hdr_size; |
| |
| decode_picture: |
| pic_size = decode_picture_header(avctx, buf, buf_size); |
| if (pic_size < 0) { |
| av_log(avctx, AV_LOG_ERROR, "error decoding picture header\n"); |
| return pic_size; |
| } |
| |
| if (ctx->first_field) |
| if ((ret = ff_thread_get_buffer(avctx, &tframe, 0)) < 0) |
| return ret; |
| |
| if ((ret = decode_picture(avctx)) < 0) { |
| av_log(avctx, AV_LOG_ERROR, "error decoding picture\n"); |
| return ret; |
| } |
| |
| buf += pic_size; |
| buf_size -= pic_size; |
| |
| if (ctx->frame_type && buf_size > 0 && ctx->first_field) { |
| ctx->first_field = 0; |
| goto decode_picture; |
| } |
| |
| *got_frame = 1; |
| |
| return avpkt->size; |
| } |
| |
| static av_cold int decode_close(AVCodecContext *avctx) |
| { |
| ProresContext *ctx = avctx->priv_data; |
| |
| av_freep(&ctx->slices); |
| |
| return 0; |
| } |
| |
| AVCodec ff_prores_decoder = { |
| .name = "prores", |
| .long_name = NULL_IF_CONFIG_SMALL("Apple ProRes (iCodec Pro)"), |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = AV_CODEC_ID_PRORES, |
| .priv_data_size = sizeof(ProresContext), |
| .init = decode_init, |
| .close = decode_close, |
| .decode = decode_frame, |
| .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_FRAME_THREADS, |
| .profiles = NULL_IF_CONFIG_SMALL(ff_prores_profiles), |
| }; |
