From 5ab21439fdfb8e239eb778128590d95967067b46 Mon Sep 17 00:00:00 2001 From: Joseph Artsimovich Date: Wed, 20 Jul 2011 18:58:27 +0100 Subject: dnxhd: 10-bit support Signed-off-by: Mans Rullgard --- libavcodec/dnxhdenc.c | 240 ++++++++++++++++++++++++++++++++++++++------------ 1 file changed, 184 insertions(+), 56 deletions(-) (limited to 'libavcodec/dnxhdenc.c') diff --git a/libavcodec/dnxhdenc.c b/libavcodec/dnxhdenc.c index b65d0bf669..3fb10d4380 100644 --- a/libavcodec/dnxhdenc.c +++ b/libavcodec/dnxhdenc.c @@ -1,8 +1,10 @@ /* * VC3/DNxHD encoder * Copyright (c) 2007 Baptiste Coudurier + * Copyright (c) 2011 MirriAd Ltd * * VC-3 encoder funded by the British Broadcasting Corporation + * 10 bit support added by MirriAd Ltd, Joseph Artsimovich * * This file is part of Libav. * @@ -32,6 +34,7 @@ #include "dnxhdenc.h" #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM +#define DNX10BIT_QMAT_SHIFT 18 // The largest value that will not lead to overflow for 10bit samples. static const AVOption options[]={ {"nitris_compat", "encode with Avid Nitris compatibility", offsetof(DNXHDEncContext, nitris_compat), FF_OPT_TYPE_INT, {.dbl = 0}, 0, 1, VE}, @@ -41,7 +44,7 @@ static const AVClass class = { "dnxhd", av_default_item_name, options, LIBAVUTIL #define LAMBDA_FRAC_BITS 10 -static void dnxhd_get_pixels_8x4(DCTELEM *restrict block, const uint8_t *pixels, int line_size) +static void dnxhd_8bit_get_pixels_8x4_sym(DCTELEM *restrict block, const uint8_t *pixels, int line_size) { int i; for (i = 0; i < 4; i++) { @@ -58,6 +61,43 @@ static void dnxhd_get_pixels_8x4(DCTELEM *restrict block, const uint8_t *pixels, memcpy(block + 24, block - 32, sizeof(*block) * 8); } +static av_always_inline void dnxhd_10bit_get_pixels_8x4_sym(DCTELEM *restrict block, const uint8_t *pixels, int line_size) +{ + int i; + + block += 32; + + for (i = 0; i < 4; i++) { + memcpy(block + i * 8, pixels + i * line_size, 8 * sizeof(*block)); + memcpy(block - (i+1) * 8, pixels + i * line_size, 8 * sizeof(*block)); + } +} + +static int dnxhd_10bit_dct_quantize(MpegEncContext *ctx, DCTELEM *block, + int n, int qscale, int *overflow) +{ + const uint8_t *scantable= ctx->intra_scantable.scantable; + const int *qmat = ctx->q_intra_matrix[qscale]; + int last_non_zero = 0; + + ctx->dsp.fdct(block); + + // Divide by 4 with rounding, to compensate scaling of DCT coefficients + block[0] = (block[0] + 2) >> 2; + + for (int i = 1; i < 64; ++i) { + int j = scantable[i]; + int sign = block[j] >> 31; + int level = (block[j] ^ sign) - sign; + level = level * qmat[j] >> DNX10BIT_QMAT_SHIFT; + block[j] = (level ^ sign) - sign; + if (level) + last_non_zero = i; + } + + return last_non_zero; +} + static int dnxhd_init_vlc(DNXHDEncContext *ctx) { int i, j, level, run; @@ -118,31 +158,55 @@ static int dnxhd_init_qmat(DNXHDEncContext *ctx, int lbias, int cbias) // init first elem to 1 to avoid div by 0 in convert_matrix uint16_t weight_matrix[64] = {1,}; // convert_matrix needs uint16_t* int qscale, i; + const uint8_t *luma_weight_table = ctx->cid_table->luma_weight; + const uint8_t *chroma_weight_table = ctx->cid_table->chroma_weight; FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->qmatrix_l, (ctx->m.avctx->qmax+1) * 64 * sizeof(int), fail); FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->qmatrix_c, (ctx->m.avctx->qmax+1) * 64 * sizeof(int), fail); FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->qmatrix_l16, (ctx->m.avctx->qmax+1) * 64 * 2 * sizeof(uint16_t), fail); FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->qmatrix_c16, (ctx->m.avctx->qmax+1) * 64 * 2 * sizeof(uint16_t), fail); - for (i = 1; i < 64; i++) { - int j = ctx->m.dsp.idct_permutation[ff_zigzag_direct[i]]; - weight_matrix[j] = ctx->cid_table->luma_weight[i]; - } - ff_convert_matrix(&ctx->m.dsp, ctx->qmatrix_l, ctx->qmatrix_l16, weight_matrix, - ctx->m.intra_quant_bias, 1, ctx->m.avctx->qmax, 1); - for (i = 1; i < 64; i++) { - int j = ctx->m.dsp.idct_permutation[ff_zigzag_direct[i]]; - weight_matrix[j] = ctx->cid_table->chroma_weight[i]; - } - ff_convert_matrix(&ctx->m.dsp, ctx->qmatrix_c, ctx->qmatrix_c16, weight_matrix, - ctx->m.intra_quant_bias, 1, ctx->m.avctx->qmax, 1); - for (qscale = 1; qscale <= ctx->m.avctx->qmax; qscale++) { - for (i = 0; i < 64; i++) { - ctx->qmatrix_l [qscale] [i] <<= 2; ctx->qmatrix_c [qscale] [i] <<= 2; - ctx->qmatrix_l16[qscale][0][i] <<= 2; ctx->qmatrix_l16[qscale][1][i] <<= 2; - ctx->qmatrix_c16[qscale][0][i] <<= 2; ctx->qmatrix_c16[qscale][1][i] <<= 2; + if (ctx->cid_table->bit_depth == 8) { + for (i = 1; i < 64; i++) { + int j = ctx->m.dsp.idct_permutation[ff_zigzag_direct[i]]; + weight_matrix[j] = ctx->cid_table->luma_weight[i]; + } + ff_convert_matrix(&ctx->m.dsp, ctx->qmatrix_l, ctx->qmatrix_l16, weight_matrix, + ctx->m.intra_quant_bias, 1, ctx->m.avctx->qmax, 1); + for (i = 1; i < 64; i++) { + int j = ctx->m.dsp.idct_permutation[ff_zigzag_direct[i]]; + weight_matrix[j] = ctx->cid_table->chroma_weight[i]; + } + ff_convert_matrix(&ctx->m.dsp, ctx->qmatrix_c, ctx->qmatrix_c16, weight_matrix, + ctx->m.intra_quant_bias, 1, ctx->m.avctx->qmax, 1); + + for (qscale = 1; qscale <= ctx->m.avctx->qmax; qscale++) { + for (i = 0; i < 64; i++) { + ctx->qmatrix_l [qscale] [i] <<= 2; ctx->qmatrix_c [qscale] [i] <<= 2; + ctx->qmatrix_l16[qscale][0][i] <<= 2; ctx->qmatrix_l16[qscale][1][i] <<= 2; + ctx->qmatrix_c16[qscale][0][i] <<= 2; ctx->qmatrix_c16[qscale][1][i] <<= 2; + } + } + } else { + // 10-bit + for (qscale = 1; qscale <= ctx->m.avctx->qmax; qscale++) { + for (i = 1; i < 64; i++) { + int j = ctx->m.dsp.idct_permutation[ff_zigzag_direct[i]]; + + // The quantization formula from the VC-3 standard is: + // quantized = sign(block[i]) * floor(abs(block[i]/s) * p / (qscale * weight_table[i])) + // Where p is 32 for 8-bit samples and 8 for 10-bit ones. + // The s factor compensates scaling of DCT coefficients done by the DCT routines, + // and therefore is not present in standard. It's 8 for 8-bit samples and 4 for 10-bit ones. + // We want values of ctx->qtmatrix_l and ctx->qtmatrix_r to be: + // ((1 << DNX10BIT_QMAT_SHIFT) * (p / s)) / (qscale * weight_table[i]) + // For 10-bit samples, p / s == 2 + ctx->qmatrix_l[qscale][j] = (1 << (DNX10BIT_QMAT_SHIFT + 1)) / (qscale * luma_weight_table[i]); + ctx->qmatrix_c[qscale][j] = (1 << (DNX10BIT_QMAT_SHIFT + 1)) / (qscale * chroma_weight_table[i]); + } } } + return 0; fail: return -1; @@ -165,10 +229,22 @@ static int dnxhd_init_rc(DNXHDEncContext *ctx) static int dnxhd_encode_init(AVCodecContext *avctx) { DNXHDEncContext *ctx = avctx->priv_data; - int i, index; + int i, index, bit_depth; + + switch (avctx->pix_fmt) { + case PIX_FMT_YUV422P: + bit_depth = 8; + break; + case PIX_FMT_YUV422P10: + bit_depth = 10; + break; + default: + av_log(avctx, AV_LOG_ERROR, "pixel format is incompatible with DNxHD\n"); + return -1; + } - ctx->cid = ff_dnxhd_find_cid(avctx); - if (!ctx->cid || avctx->pix_fmt != PIX_FMT_YUV422P) { + ctx->cid = ff_dnxhd_find_cid(avctx, bit_depth); + if (!ctx->cid) { av_log(avctx, AV_LOG_ERROR, "video parameters incompatible with DNxHD\n"); return -1; } @@ -181,15 +257,25 @@ static int dnxhd_encode_init(AVCodecContext *avctx) ctx->m.mb_intra = 1; ctx->m.h263_aic = 1; - ctx->get_pixels_8x4_sym = dnxhd_get_pixels_8x4; + avctx->bits_per_raw_sample = ctx->cid_table->bit_depth; dsputil_init(&ctx->m.dsp, avctx); ff_dct_common_init(&ctx->m); + if (!ctx->m.dct_quantize) + ctx->m.dct_quantize = dct_quantize_c; + + if (ctx->cid_table->bit_depth == 10) { + ctx->m.dct_quantize = dnxhd_10bit_dct_quantize; + ctx->get_pixels_8x4_sym = dnxhd_10bit_get_pixels_8x4_sym; + ctx->block_width_l2 = 4; + } else { + ctx->get_pixels_8x4_sym = dnxhd_8bit_get_pixels_8x4_sym; + ctx->block_width_l2 = 3; + } + #if HAVE_MMX ff_dnxhd_init_mmx(ctx); #endif - if (!ctx->m.dct_quantize) - ctx->m.dct_quantize = dct_quantize_c; ctx->m.mb_height = (avctx->height + 15) / 16; ctx->m.mb_width = (avctx->width + 15) / 16; @@ -255,7 +341,7 @@ static int dnxhd_write_header(AVCodecContext *avctx, uint8_t *buf) AV_WB16(buf + 0x1a, avctx->width); // SPL AV_WB16(buf + 0x1d, avctx->height>>ctx->interlaced); // NAL - buf[0x21] = 0x38; // FIXME 8 bit per comp + buf[0x21] = ctx->cid_table->bit_depth == 10 ? 0x58 : 0x38; buf[0x22] = 0x88 + (ctx->interlaced<<2); AV_WB32(buf + 0x28, ctx->cid); // CID buf[0x2c] = ctx->interlaced ? 0 : 0x80; @@ -321,15 +407,27 @@ static av_always_inline void dnxhd_unquantize_c(DNXHDEncContext *ctx, DCTELEM *b if (level) { if (level < 0) { level = (1-2*level) * qscale * weight_matrix[i]; - if (weight_matrix[i] != 32) - level += 32; - level >>= 6; + if (ctx->cid_table->bit_depth == 10) { + if (weight_matrix[i] != 8) + level += 8; + level >>= 4; + } else { + if (weight_matrix[i] != 32) + level += 32; + level >>= 6; + } level = -level; } else { level = (2*level+1) * qscale * weight_matrix[i]; - if (weight_matrix[i] != 32) - level += 32; - level >>= 6; + if (ctx->cid_table->bit_depth == 10) { + if (weight_matrix[i] != 8) + level += 8; + level >>= 4; + } else { + if (weight_matrix[i] != 32) + level += 32; + level >>= 6; + } } block[j] = level; } @@ -364,22 +462,24 @@ static av_always_inline int dnxhd_calc_ac_bits(DNXHDEncContext *ctx, DCTELEM *bl static av_always_inline void dnxhd_get_blocks(DNXHDEncContext *ctx, int mb_x, int mb_y) { - const uint8_t *ptr_y = ctx->thread[0]->src[0] + ((mb_y << 4) * ctx->m.linesize) + (mb_x << 4); - const uint8_t *ptr_u = ctx->thread[0]->src[1] + ((mb_y << 4) * ctx->m.uvlinesize) + (mb_x << 3); - const uint8_t *ptr_v = ctx->thread[0]->src[2] + ((mb_y << 4) * ctx->m.uvlinesize) + (mb_x << 3); + const int bs = ctx->block_width_l2; + const int bw = 1 << bs; + const uint8_t *ptr_y = ctx->thread[0]->src[0] + ((mb_y << 4) * ctx->m.linesize) + (mb_x << bs+1); + const uint8_t *ptr_u = ctx->thread[0]->src[1] + ((mb_y << 4) * ctx->m.uvlinesize) + (mb_x << bs); + const uint8_t *ptr_v = ctx->thread[0]->src[2] + ((mb_y << 4) * ctx->m.uvlinesize) + (mb_x << bs); DSPContext *dsp = &ctx->m.dsp; - dsp->get_pixels(ctx->blocks[0], ptr_y, ctx->m.linesize); - dsp->get_pixels(ctx->blocks[1], ptr_y + 8, ctx->m.linesize); - dsp->get_pixels(ctx->blocks[2], ptr_u, ctx->m.uvlinesize); - dsp->get_pixels(ctx->blocks[3], ptr_v, ctx->m.uvlinesize); + dsp->get_pixels(ctx->blocks[0], ptr_y, ctx->m.linesize); + dsp->get_pixels(ctx->blocks[1], ptr_y + bw, ctx->m.linesize); + dsp->get_pixels(ctx->blocks[2], ptr_u, ctx->m.uvlinesize); + dsp->get_pixels(ctx->blocks[3], ptr_v, ctx->m.uvlinesize); if (mb_y+1 == ctx->m.mb_height && ctx->m.avctx->height == 1080) { if (ctx->interlaced) { - ctx->get_pixels_8x4_sym(ctx->blocks[4], ptr_y + ctx->dct_y_offset, ctx->m.linesize); - ctx->get_pixels_8x4_sym(ctx->blocks[5], ptr_y + ctx->dct_y_offset + 8, ctx->m.linesize); - ctx->get_pixels_8x4_sym(ctx->blocks[6], ptr_u + ctx->dct_uv_offset, ctx->m.uvlinesize); - ctx->get_pixels_8x4_sym(ctx->blocks[7], ptr_v + ctx->dct_uv_offset, ctx->m.uvlinesize); + ctx->get_pixels_8x4_sym(ctx->blocks[4], ptr_y + ctx->dct_y_offset, ctx->m.linesize); + ctx->get_pixels_8x4_sym(ctx->blocks[5], ptr_y + ctx->dct_y_offset + bw, ctx->m.linesize); + ctx->get_pixels_8x4_sym(ctx->blocks[6], ptr_u + ctx->dct_uv_offset, ctx->m.uvlinesize); + ctx->get_pixels_8x4_sym(ctx->blocks[7], ptr_v + ctx->dct_uv_offset, ctx->m.uvlinesize); } else { dsp->clear_block(ctx->blocks[4]); dsp->clear_block(ctx->blocks[5]); @@ -387,10 +487,10 @@ static av_always_inline void dnxhd_get_blocks(DNXHDEncContext *ctx, int mb_x, in dsp->clear_block(ctx->blocks[7]); } } else { - dsp->get_pixels(ctx->blocks[4], ptr_y + ctx->dct_y_offset, ctx->m.linesize); - dsp->get_pixels(ctx->blocks[5], ptr_y + ctx->dct_y_offset + 8, ctx->m.linesize); - dsp->get_pixels(ctx->blocks[6], ptr_u + ctx->dct_uv_offset, ctx->m.uvlinesize); - dsp->get_pixels(ctx->blocks[7], ptr_v + ctx->dct_uv_offset, ctx->m.uvlinesize); + dsp->get_pixels(ctx->blocks[4], ptr_y + ctx->dct_y_offset, ctx->m.linesize); + dsp->get_pixels(ctx->blocks[5], ptr_y + ctx->dct_y_offset + bw, ctx->m.linesize); + dsp->get_pixels(ctx->blocks[6], ptr_u + ctx->dct_uv_offset, ctx->m.uvlinesize); + dsp->get_pixels(ctx->blocks[7], ptr_v + ctx->dct_uv_offset, ctx->m.uvlinesize); } } @@ -417,7 +517,7 @@ static int dnxhd_calc_bits_thread(AVCodecContext *avctx, void *arg, int jobnr, i ctx->m.last_dc[0] = ctx->m.last_dc[1] = - ctx->m.last_dc[2] = 1024; + ctx->m.last_dc[2] = 1 << (ctx->cid_table->bit_depth + 2); for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) { unsigned mb = mb_y * ctx->m.mb_width + mb_x; @@ -440,6 +540,8 @@ static int dnxhd_calc_bits_thread(AVCodecContext *avctx, void *arg, int jobnr, i diff = block[0] - ctx->m.last_dc[n]; if (diff < 0) nbits = av_log2_16bit(-2*diff); else nbits = av_log2_16bit( 2*diff); + + assert(nbits < ctx->cid_table->bit_depth + 4); dc_bits += ctx->cid_table->dc_bits[nbits] + nbits; ctx->m.last_dc[n] = block[0]; @@ -465,7 +567,7 @@ static int dnxhd_encode_thread(AVCodecContext *avctx, void *arg, int jobnr, int ctx->m.last_dc[0] = ctx->m.last_dc[1] = - ctx->m.last_dc[2] = 1024; + ctx->m.last_dc[2] = 1 << (ctx->cid_table->bit_depth + 2); for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) { unsigned mb = mb_y * ctx->m.mb_width + mb_x; int qscale = ctx->mb_qscale[mb]; @@ -515,13 +617,39 @@ static int dnxhd_mb_var_thread(AVCodecContext *avctx, void *arg, int jobnr, int DNXHDEncContext *ctx = avctx->priv_data; int mb_y = jobnr, mb_x; ctx = ctx->thread[threadnr]; - for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) { - unsigned mb = mb_y * ctx->m.mb_width + mb_x; - uint8_t *pix = ctx->thread[0]->src[0] + ((mb_y<<4) * ctx->m.linesize) + (mb_x<<4); - int sum = ctx->m.dsp.pix_sum(pix, ctx->m.linesize); - int varc = (ctx->m.dsp.pix_norm1(pix, ctx->m.linesize) - (((unsigned)(sum*sum))>>8)+128)>>8; - ctx->mb_cmp[mb].value = varc; - ctx->mb_cmp[mb].mb = mb; + if (ctx->cid_table->bit_depth == 8) { + uint8_t *pix = ctx->thread[0]->src[0] + ((mb_y<<4) * ctx->m.linesize); + for (mb_x = 0; mb_x < ctx->m.mb_width; ++mb_x, pix += 16) { + unsigned mb = mb_y * ctx->m.mb_width + mb_x; + int sum = ctx->m.dsp.pix_sum(pix, ctx->m.linesize); + int varc = (ctx->m.dsp.pix_norm1(pix, ctx->m.linesize) - (((unsigned)(sum*sum))>>8)+128)>>8; + ctx->mb_cmp[mb].value = varc; + ctx->mb_cmp[mb].mb = mb; + } + } else { // 10-bit + int const linesize = ctx->m.linesize >> 1; + for (mb_x = 0; mb_x < ctx->m.mb_width; ++mb_x) { + uint16_t *pix = (uint16_t*)ctx->thread[0]->src[0] + ((mb_y << 4) * linesize) + (mb_x << 4); + unsigned mb = mb_y * ctx->m.mb_width + mb_x; + int sum = 0; + int sqsum = 0; + int mean, sqmean; + // Macroblocks are 16x16 pixels, unlike DCT blocks which are 8x8. + for (int i = 0; i < 16; ++i) { + for (int j = 0; j < 16; ++j) { + // Turn 16-bit pixels into 10-bit ones. + int const sample = (unsigned)pix[j] >> 6; + sum += sample; + sqsum += sample * sample; + // 2^10 * 2^10 * 16 * 16 = 2^28, which is less than INT_MAX + } + pix += linesize; + } + mean = sum >> 8; // 16*16 == 2^8 + sqmean = sqsum >> 8; + ctx->mb_cmp[mb].value = sqmean - mean * mean; + ctx->mb_cmp[mb].mb = mb; + } } return 0; } @@ -871,7 +999,7 @@ AVCodec ff_dnxhd_encoder = { dnxhd_encode_picture, dnxhd_encode_end, .capabilities = CODEC_CAP_SLICE_THREADS, - .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUV422P, PIX_FMT_NONE}, + .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUV422P, PIX_FMT_YUV422P10, PIX_FMT_NONE}, .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"), .priv_class = &class, }; -- cgit v1.2.3