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FFmpeg/libavcodec/dnxhdenc.c
Andreas Rheinhardt a247ac640d avcodec: Constify AVCodecs 
Given that the AVCodec.next pointer has now been removed, most of the
AVCodecs are not modified at all any more and can therefore be made
const (as this patch does); the only exceptions are the very few codecs
for external libraries that have a init_static_data callback.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
2021-04-27 10:43:15 -03:00

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/*
* VC3/DNxHD encoder
* Copyright (c) 2007 Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
* Copyright (c) 2011 MirriAd Ltd
*
* VC-3 encoder funded by the British Broadcasting Corporation
* 10 bit support added by MirriAd Ltd, Joseph Artsimovich <joseph@mirriad.com>
*
* 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
*/
#include "libavutil/attributes.h"
#include "libavutil/internal.h"
#include "libavutil/mem_internal.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "blockdsp.h"
#include "fdctdsp.h"
#include "internal.h"
#include "mpegvideo.h"
#include "pixblockdsp.h"
#include "packet_internal.h"
#include "profiles.h"
#include "dnxhdenc.h"
// The largest value that will not lead to overflow for 10-bit samples.
#define DNX10BIT_QMAT_SHIFT 18
#define RC_VARIANCE 1 // use variance or ssd for fast rc
#define LAMBDA_FRAC_BITS 10
#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
{ "nitris_compat", "encode with Avid Nitris compatibility",
offsetof(DNXHDEncContext, nitris_compat), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
{ "ibias", "intra quant bias",
offsetof(DNXHDEncContext, intra_quant_bias), AV_OPT_TYPE_INT,
{ .i64 = 0 }, INT_MIN, INT_MAX, VE },
{ "profile", NULL, offsetof(DNXHDEncContext, profile), AV_OPT_TYPE_INT,
{ .i64 = FF_PROFILE_DNXHD },
FF_PROFILE_DNXHD, FF_PROFILE_DNXHR_444, VE, "profile" },
{ "dnxhd", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_PROFILE_DNXHD },
0, 0, VE, "profile" },
{ "dnxhr_444", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_PROFILE_DNXHR_444 },
0, 0, VE, "profile" },
{ "dnxhr_hqx", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_PROFILE_DNXHR_HQX },
0, 0, VE, "profile" },
{ "dnxhr_hq", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_PROFILE_DNXHR_HQ },
0, 0, VE, "profile" },
{ "dnxhr_sq", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_PROFILE_DNXHR_SQ },
0, 0, VE, "profile" },
{ "dnxhr_lb", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_PROFILE_DNXHR_LB },
0, 0, VE, "profile" },
{ NULL }
};
static const AVClass dnxhd_class = {
.class_name = "dnxhd",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
static void dnxhd_8bit_get_pixels_8x4_sym(int16_t *av_restrict block,
const uint8_t *pixels,
ptrdiff_t line_size)
{
int i;
for (i = 0; i < 4; i++) {
block[0] = pixels[0];
block[1] = pixels[1];
block[2] = pixels[2];
block[3] = pixels[3];
block[4] = pixels[4];
block[5] = pixels[5];
block[6] = pixels[6];
block[7] = pixels[7];
pixels += line_size;
block += 8;
}
memcpy(block, block - 8, sizeof(*block) * 8);
memcpy(block + 8, block - 16, sizeof(*block) * 8);
memcpy(block + 16, block - 24, sizeof(*block) * 8);
memcpy(block + 24, block - 32, sizeof(*block) * 8);
}
static av_always_inline
void dnxhd_10bit_get_pixels_8x4_sym(int16_t *av_restrict block,
const uint8_t *pixels,
ptrdiff_t line_size)
{
memcpy(block + 0 * 8, pixels + 0 * line_size, 8 * sizeof(*block));
memcpy(block + 7 * 8, pixels + 0 * line_size, 8 * sizeof(*block));
memcpy(block + 1 * 8, pixels + 1 * line_size, 8 * sizeof(*block));
memcpy(block + 6 * 8, pixels + 1 * line_size, 8 * sizeof(*block));
memcpy(block + 2 * 8, pixels + 2 * line_size, 8 * sizeof(*block));
memcpy(block + 5 * 8, pixels + 2 * line_size, 8 * sizeof(*block));
memcpy(block + 3 * 8, pixels + 3 * line_size, 8 * sizeof(*block));
memcpy(block + 4 * 8, pixels + 3 * line_size, 8 * sizeof(*block));
}
static int dnxhd_10bit_dct_quantize_444(MpegEncContext *ctx, int16_t *block,
int n, int qscale, int *overflow)
{
int i, j, level, last_non_zero, start_i;
const int *qmat;
const uint8_t *scantable= ctx->intra_scantable.scantable;
int bias;
int max = 0;
unsigned int threshold1, threshold2;
ctx->fdsp.fdct(block);
block[0] = (block[0] + 2) >> 2;
start_i = 1;
last_non_zero = 0;
qmat = n < 4 ? ctx->q_intra_matrix[qscale] : ctx->q_chroma_intra_matrix[qscale];
bias= ctx->intra_quant_bias * (1 << (16 - 8));
threshold1 = (1 << 16) - bias - 1;
threshold2 = (threshold1 << 1);
for (i = 63; i >= start_i; i--) {
j = scantable[i];
level = block[j] * qmat[j];
if (((unsigned)(level + threshold1)) > threshold2) {
last_non_zero = i;
break;
} else{
block[j]=0;
}
}
for (i = start_i; i <= last_non_zero; i++) {
j = scantable[i];
level = block[j] * qmat[j];
if (((unsigned)(level + threshold1)) > threshold2) {
if (level > 0) {
level = (bias + level) >> 16;
block[j] = level;
} else{
level = (bias - level) >> 16;
block[j] = -level;
}
max |= level;
} else {
block[j] = 0;
}
}
*overflow = ctx->max_qcoeff < max; //overflow might have happened
/* we need this permutation so that we correct the IDCT, we only permute the !=0 elements */
if (ctx->idsp.perm_type != FF_IDCT_PERM_NONE)
ff_block_permute(block, ctx->idsp.idct_permutation,
scantable, last_non_zero);
return last_non_zero;
}
static int dnxhd_10bit_dct_quantize(MpegEncContext *ctx, int16_t *block,
int n, int qscale, int *overflow)
{
const uint8_t *scantable= ctx->intra_scantable.scantable;
const int *qmat = n<4 ? ctx->q_intra_matrix[qscale] : ctx->q_chroma_intra_matrix[qscale];
int last_non_zero = 0;
int i;
ctx->fdsp.fdct(block);
// Divide by 4 with rounding, to compensate scaling of DCT coefficients
block[0] = (block[0] + 2) >> 2;
for (i = 1; i < 64; ++i) {
int j = scantable[i];
int sign = FF_SIGNBIT(block[j]);
int level = (block[j] ^ sign) - sign;
level = level * qmat[j] >> DNX10BIT_QMAT_SHIFT;
block[j] = (level ^ sign) - sign;
if (level)
last_non_zero = i;
}
/* we need this permutation so that we correct the IDCT, we only permute the !=0 elements */
if (ctx->idsp.perm_type != FF_IDCT_PERM_NONE)
ff_block_permute(block, ctx->idsp.idct_permutation,
scantable, last_non_zero);
return last_non_zero;
}
static av_cold int dnxhd_init_vlc(DNXHDEncContext *ctx)
{
int i, j, level, run;
int max_level = 1 << (ctx->bit_depth + 2);
if (!FF_ALLOCZ_TYPED_ARRAY(ctx->orig_vlc_codes, max_level * 4) ||
!FF_ALLOCZ_TYPED_ARRAY(ctx->orig_vlc_bits, max_level * 4) ||
!(ctx->run_codes = av_mallocz(63 * 2)) ||
!(ctx->run_bits = av_mallocz(63)))
return AVERROR(ENOMEM);
ctx->vlc_codes = ctx->orig_vlc_codes + max_level * 2;
ctx->vlc_bits = ctx->orig_vlc_bits + max_level * 2;
for (level = -max_level; level < max_level; level++) {
for (run = 0; run < 2; run++) {
int index = level * (1 << 1) | run;
int sign, offset = 0, alevel = level;
MASK_ABS(sign, alevel);
if (alevel > 64) {
offset = (alevel - 1) >> 6;
alevel -= offset << 6;
}
for (j = 0; j < 257; j++) {
if (ctx->cid_table->ac_info[2*j+0] >> 1 == alevel &&
(!offset || (ctx->cid_table->ac_info[2*j+1] & 1) && offset) &&
(!run || (ctx->cid_table->ac_info[2*j+1] & 2) && run)) {
av_assert1(!ctx->vlc_codes[index]);
if (alevel) {
ctx->vlc_codes[index] =
(ctx->cid_table->ac_codes[j] << 1) | (sign & 1);
ctx->vlc_bits[index] = ctx->cid_table->ac_bits[j] + 1;
} else {
ctx->vlc_codes[index] = ctx->cid_table->ac_codes[j];
ctx->vlc_bits[index] = ctx->cid_table->ac_bits[j];
}
break;
}
}
av_assert0(!alevel || j < 257);
if (offset) {
ctx->vlc_codes[index] =
(ctx->vlc_codes[index] << ctx->cid_table->index_bits) | offset;
ctx->vlc_bits[index] += ctx->cid_table->index_bits;
}
}
}
for (i = 0; i < 62; i++) {
int run = ctx->cid_table->run[i];
av_assert0(run < 63);
ctx->run_codes[run] = ctx->cid_table->run_codes[i];
ctx->run_bits[run] = ctx->cid_table->run_bits[i];
}
return 0;
}
static av_cold 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;
if (!FF_ALLOCZ_TYPED_ARRAY(ctx->qmatrix_l, ctx->m.avctx->qmax + 1) ||
!FF_ALLOCZ_TYPED_ARRAY(ctx->qmatrix_c, ctx->m.avctx->qmax + 1) ||
!FF_ALLOCZ_TYPED_ARRAY(ctx->qmatrix_l16, ctx->m.avctx->qmax + 1) ||
!FF_ALLOCZ_TYPED_ARRAY(ctx->qmatrix_c16, ctx->m.avctx->qmax + 1))
return AVERROR(ENOMEM);
if (ctx->bit_depth == 8) {
for (i = 1; i < 64; i++) {
int j = ctx->m.idsp.idct_permutation[ff_zigzag_direct[i]];
weight_matrix[j] = ctx->cid_table->luma_weight[i];
}
ff_convert_matrix(&ctx->m, ctx->qmatrix_l, ctx->qmatrix_l16,
weight_matrix, ctx->intra_quant_bias, 1,
ctx->m.avctx->qmax, 1);
for (i = 1; i < 64; i++) {
int j = ctx->m.idsp.idct_permutation[ff_zigzag_direct[i]];
weight_matrix[j] = ctx->cid_table->chroma_weight[i];
}
ff_convert_matrix(&ctx->m, ctx->qmatrix_c, ctx->qmatrix_c16,
weight_matrix, ctx->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 = 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]);
}
}
}
ctx->m.q_chroma_intra_matrix16 = ctx->qmatrix_c16;
ctx->m.q_chroma_intra_matrix = ctx->qmatrix_c;
ctx->m.q_intra_matrix16 = ctx->qmatrix_l16;
ctx->m.q_intra_matrix = ctx->qmatrix_l;
return 0;
}
static av_cold int dnxhd_init_rc(DNXHDEncContext *ctx)
{
if (!FF_ALLOCZ_TYPED_ARRAY(ctx->mb_rc, (ctx->m.avctx->qmax + 1) * ctx->m.mb_num))
return AVERROR(ENOMEM);
if (ctx->m.avctx->mb_decision != FF_MB_DECISION_RD) {
if (!FF_ALLOCZ_TYPED_ARRAY(ctx->mb_cmp, ctx->m.mb_num) ||
!FF_ALLOCZ_TYPED_ARRAY(ctx->mb_cmp_tmp, ctx->m.mb_num))
return AVERROR(ENOMEM);
}
ctx->frame_bits = (ctx->coding_unit_size -
ctx->data_offset - 4 - ctx->min_padding) * 8;
ctx->qscale = 1;
ctx->lambda = 2 << LAMBDA_FRAC_BITS; // qscale 2
return 0;
}
static av_cold int dnxhd_encode_init(AVCodecContext *avctx)
{
DNXHDEncContext *ctx = avctx->priv_data;
int i, ret;
switch (avctx->pix_fmt) {
case AV_PIX_FMT_YUV422P:
ctx->bit_depth = 8;
break;
case AV_PIX_FMT_YUV422P10:
case AV_PIX_FMT_YUV444P10:
case AV_PIX_FMT_GBRP10:
ctx->bit_depth = 10;
break;
default:
av_log(avctx, AV_LOG_ERROR,
"pixel format is incompatible with DNxHD\n");
return AVERROR(EINVAL);
}
if ((ctx->profile == FF_PROFILE_DNXHR_444 && (avctx->pix_fmt != AV_PIX_FMT_YUV444P10 &&
avctx->pix_fmt != AV_PIX_FMT_GBRP10)) ||
(ctx->profile != FF_PROFILE_DNXHR_444 && (avctx->pix_fmt == AV_PIX_FMT_YUV444P10 ||
avctx->pix_fmt == AV_PIX_FMT_GBRP10))) {
av_log(avctx, AV_LOG_ERROR,
"pixel format is incompatible with DNxHD profile\n");
return AVERROR(EINVAL);
}
if (ctx->profile == FF_PROFILE_DNXHR_HQX && avctx->pix_fmt != AV_PIX_FMT_YUV422P10) {
av_log(avctx, AV_LOG_ERROR,
"pixel format is incompatible with DNxHR HQX profile\n");
return AVERROR(EINVAL);
}
if ((ctx->profile == FF_PROFILE_DNXHR_LB ||
ctx->profile == FF_PROFILE_DNXHR_SQ ||
ctx->profile == FF_PROFILE_DNXHR_HQ) && avctx->pix_fmt != AV_PIX_FMT_YUV422P) {
av_log(avctx, AV_LOG_ERROR,
"pixel format is incompatible with DNxHR LB/SQ/HQ profile\n");
return AVERROR(EINVAL);
}
ctx->is_444 = ctx->profile == FF_PROFILE_DNXHR_444;
avctx->profile = ctx->profile;
ctx->cid = ff_dnxhd_find_cid(avctx, ctx->bit_depth);
if (!ctx->cid) {
av_log(avctx, AV_LOG_ERROR,
"video parameters incompatible with DNxHD. Valid DNxHD profiles:\n");
ff_dnxhd_print_profiles(avctx, AV_LOG_ERROR);
return AVERROR(EINVAL);
}
av_log(avctx, AV_LOG_DEBUG, "cid %d\n", ctx->cid);
if (ctx->cid >= 1270 && ctx->cid <= 1274)
avctx->codec_tag = MKTAG('A','V','d','h');
if (avctx->width < 256 || avctx->height < 120) {
av_log(avctx, AV_LOG_ERROR,
"Input dimensions too small, input must be at least 256x120\n");
return AVERROR(EINVAL);
}
ctx->cid_table = ff_dnxhd_get_cid_table(ctx->cid);
av_assert0(ctx->cid_table);
ctx->m.avctx = avctx;
ctx->m.mb_intra = 1;
ctx->m.h263_aic = 1;
avctx->bits_per_raw_sample = ctx->bit_depth;
ff_blockdsp_init(&ctx->bdsp, avctx);
ff_fdctdsp_init(&ctx->m.fdsp, avctx);
ff_mpv_idct_init(&ctx->m);
ff_mpegvideoencdsp_init(&ctx->m.mpvencdsp, avctx);
ff_pixblockdsp_init(&ctx->m.pdsp, avctx);
ff_dct_encode_init(&ctx->m);
if (ctx->profile != FF_PROFILE_DNXHD)
ff_videodsp_init(&ctx->m.vdsp, ctx->bit_depth);
if (!ctx->m.dct_quantize)
ctx->m.dct_quantize = ff_dct_quantize_c;
if (ctx->is_444 || ctx->profile == FF_PROFILE_DNXHR_HQX) {
ctx->m.dct_quantize = dnxhd_10bit_dct_quantize_444;
ctx->get_pixels_8x4_sym = dnxhd_10bit_get_pixels_8x4_sym;
ctx->block_width_l2 = 4;
} else if (ctx->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 (ARCH_X86)
ff_dnxhdenc_init_x86(ctx);
ctx->m.mb_height = (avctx->height + 15) / 16;
ctx->m.mb_width = (avctx->width + 15) / 16;
if (avctx->flags & AV_CODEC_FLAG_INTERLACED_DCT) {
ctx->interlaced = 1;
ctx->m.mb_height /= 2;
}
if (ctx->interlaced && ctx->profile != FF_PROFILE_DNXHD) {
av_log(avctx, AV_LOG_ERROR,
"Interlaced encoding is not supported for DNxHR profiles.\n");
return AVERROR(EINVAL);
}
ctx->m.mb_num = ctx->m.mb_height * ctx->m.mb_width;
if (ctx->cid_table->frame_size == DNXHD_VARIABLE) {
ctx->frame_size = avpriv_dnxhd_get_hr_frame_size(ctx->cid,
avctx->width, avctx->height);
av_assert0(ctx->frame_size >= 0);
ctx->coding_unit_size = ctx->frame_size;
} else {
ctx->frame_size = ctx->cid_table->frame_size;
ctx->coding_unit_size = ctx->cid_table->coding_unit_size;
}
if (ctx->m.mb_height > 68)
ctx->data_offset = 0x170 + (ctx->m.mb_height << 2);
else
ctx->data_offset = 0x280;
// XXX tune lbias/cbias
if ((ret = dnxhd_init_qmat(ctx, ctx->intra_quant_bias, 0)) < 0)
return ret;
/* Avid Nitris hardware decoder requires a minimum amount of padding
* in the coding unit payload */
if (ctx->nitris_compat)
ctx->min_padding = 1600;
if ((ret = dnxhd_init_vlc(ctx)) < 0)
return ret;
if ((ret = dnxhd_init_rc(ctx)) < 0)
return ret;
if (!FF_ALLOCZ_TYPED_ARRAY(ctx->slice_size, ctx->m.mb_height) ||
!FF_ALLOCZ_TYPED_ARRAY(ctx->slice_offs, ctx->m.mb_height) ||
!FF_ALLOCZ_TYPED_ARRAY(ctx->mb_bits, ctx->m.mb_num) ||
!FF_ALLOCZ_TYPED_ARRAY(ctx->mb_qscale, ctx->m.mb_num))
return AVERROR(ENOMEM);
if (avctx->active_thread_type == FF_THREAD_SLICE) {
if (avctx->thread_count > MAX_THREADS) {
av_log(avctx, AV_LOG_ERROR, "too many threads\n");
return AVERROR(EINVAL);
}
}
if (avctx->qmax <= 1) {
av_log(avctx, AV_LOG_ERROR, "qmax must be at least 2\n");
return AVERROR(EINVAL);
}
ctx->thread[0] = ctx;
if (avctx->active_thread_type == FF_THREAD_SLICE) {
for (i = 1; i < avctx->thread_count; i++) {
ctx->thread[i] = av_malloc(sizeof(DNXHDEncContext));
if (!ctx->thread[i])
return AVERROR(ENOMEM);
memcpy(ctx->thread[i], ctx, sizeof(DNXHDEncContext));
}
}
return 0;
}
static int dnxhd_write_header(AVCodecContext *avctx, uint8_t *buf)
{
DNXHDEncContext *ctx = avctx->priv_data;
memset(buf, 0, ctx->data_offset);
// * write prefix */
AV_WB16(buf + 0x02, ctx->data_offset);
if (ctx->cid >= 1270 && ctx->cid <= 1274)
buf[4] = 0x03;
else
buf[4] = 0x01;
buf[5] = ctx->interlaced ? ctx->cur_field + 2 : 0x01;
buf[6] = 0x80; // crc flag off
buf[7] = 0xa0; // reserved
AV_WB16(buf + 0x18, avctx->height >> ctx->interlaced); // ALPF
AV_WB16(buf + 0x1a, avctx->width); // SPL
AV_WB16(buf + 0x1d, avctx->height >> ctx->interlaced); // NAL
buf[0x21] = ctx->bit_depth == 10 ? 0x58 : 0x38;
buf[0x22] = 0x88 + (ctx->interlaced << 2);
AV_WB32(buf + 0x28, ctx->cid); // CID
buf[0x2c] = (!ctx->interlaced << 7) | (ctx->is_444 << 6) | (avctx->pix_fmt == AV_PIX_FMT_YUV444P10);
buf[0x5f] = 0x01; // UDL
buf[0x167] = 0x02; // reserved
AV_WB16(buf + 0x16a, ctx->m.mb_height * 4 + 4); // MSIPS
AV_WB16(buf + 0x16c, ctx->m.mb_height); // Ns
buf[0x16f] = 0x10; // reserved
ctx->msip = buf + 0x170;
return 0;
}
static av_always_inline void dnxhd_encode_dc(DNXHDEncContext *ctx, int diff)
{
int nbits;
if (diff < 0) {
nbits = av_log2_16bit(-2 * diff);
diff--;
} else {
nbits = av_log2_16bit(2 * diff);
}
put_bits(&ctx->m.pb, ctx->cid_table->dc_bits[nbits] + nbits,
(ctx->cid_table->dc_codes[nbits] << nbits) +
av_mod_uintp2(diff, nbits));
}
static av_always_inline
void dnxhd_encode_block(DNXHDEncContext *ctx, int16_t *block,
int last_index, int n)
{
int last_non_zero = 0;
int slevel, i, j;
dnxhd_encode_dc(ctx, block[0] - ctx->m.last_dc[n]);
ctx->m.last_dc[n] = block[0];
for (i = 1; i <= last_index; i++) {
j = ctx->m.intra_scantable.permutated[i];
slevel = block[j];
if (slevel) {
int run_level = i - last_non_zero - 1;
int rlevel = slevel * (1 << 1) | !!run_level;
put_bits(&ctx->m.pb, ctx->vlc_bits[rlevel], ctx->vlc_codes[rlevel]);
if (run_level)
put_bits(&ctx->m.pb, ctx->run_bits[run_level],
ctx->run_codes[run_level]);
last_non_zero = i;
}
}
put_bits(&ctx->m.pb, ctx->vlc_bits[0], ctx->vlc_codes[0]); // EOB
}
static av_always_inline
void dnxhd_unquantize_c(DNXHDEncContext *ctx, int16_t *block, int n,
int qscale, int last_index)
{
const uint8_t *weight_matrix;
int level;
int i;
if (ctx->is_444) {
weight_matrix = ((n % 6) < 2) ? ctx->cid_table->luma_weight
: ctx->cid_table->chroma_weight;
} else {
weight_matrix = (n & 2) ? ctx->cid_table->chroma_weight
: ctx->cid_table->luma_weight;
}
for (i = 1; i <= last_index; i++) {
int j = ctx->m.intra_scantable.permutated[i];
level = block[j];
if (level) {
if (level < 0) {
level = (1 - 2 * level) * qscale * weight_matrix[i];
if (ctx->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 (ctx->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;
}
}
}
static av_always_inline int dnxhd_ssd_block(int16_t *qblock, int16_t *block)
{
int score = 0;
int i;
for (i = 0; i < 64; i++)
score += (block[i] - qblock[i]) * (block[i] - qblock[i]);
return score;
}
static av_always_inline
int dnxhd_calc_ac_bits(DNXHDEncContext *ctx, int16_t *block, int last_index)
{
int last_non_zero = 0;
int bits = 0;
int i, j, level;
for (i = 1; i <= last_index; i++) {
j = ctx->m.intra_scantable.permutated[i];
level = block[j];
if (level) {
int run_level = i - last_non_zero - 1;
bits += ctx->vlc_bits[level * (1 << 1) |
!!run_level] + ctx->run_bits[run_level];
last_non_zero = i;
}
}
return bits;
}
static av_always_inline
void dnxhd_get_blocks(DNXHDEncContext *ctx, int mb_x, int mb_y)
{
const int bs = ctx->block_width_l2;
const int bw = 1 << bs;
int dct_y_offset = ctx->dct_y_offset;
int dct_uv_offset = ctx->dct_uv_offset;
int linesize = ctx->m.linesize;
int uvlinesize = ctx->m.uvlinesize;
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 + ctx->is_444);
const uint8_t *ptr_v = ctx->thread[0]->src[2] +
((mb_y << 4) * ctx->m.uvlinesize) + (mb_x << bs + ctx->is_444);
PixblockDSPContext *pdsp = &ctx->m.pdsp;
VideoDSPContext *vdsp = &ctx->m.vdsp;
if (ctx->bit_depth != 10 && vdsp->emulated_edge_mc && ((mb_x << 4) + 16 > ctx->m.avctx->width ||
(mb_y << 4) + 16 > ctx->m.avctx->height)) {
int y_w = ctx->m.avctx->width - (mb_x << 4);
int y_h = ctx->m.avctx->height - (mb_y << 4);
int uv_w = (y_w + 1) / 2;
int uv_h = y_h;
linesize = 16;
uvlinesize = 8;
vdsp->emulated_edge_mc(&ctx->edge_buf_y[0], ptr_y,
linesize, ctx->m.linesize,
linesize, 16,
0, 0, y_w, y_h);
vdsp->emulated_edge_mc(&ctx->edge_buf_uv[0][0], ptr_u,
uvlinesize, ctx->m.uvlinesize,
uvlinesize, 16,
0, 0, uv_w, uv_h);
vdsp->emulated_edge_mc(&ctx->edge_buf_uv[1][0], ptr_v,
uvlinesize, ctx->m.uvlinesize,
uvlinesize, 16,
0, 0, uv_w, uv_h);
dct_y_offset = bw * linesize;
dct_uv_offset = bw * uvlinesize;
ptr_y = &ctx->edge_buf_y[0];
ptr_u = &ctx->edge_buf_uv[0][0];
ptr_v = &ctx->edge_buf_uv[1][0];
} else if (ctx->bit_depth == 10 && vdsp->emulated_edge_mc && ((mb_x << 4) + 16 > ctx->m.avctx->width ||
(mb_y << 4) + 16 > ctx->m.avctx->height)) {
int y_w = ctx->m.avctx->width - (mb_x << 4);
int y_h = ctx->m.avctx->height - (mb_y << 4);
int uv_w = ctx->is_444 ? y_w : (y_w + 1) / 2;
int uv_h = y_h;
linesize = 32;
uvlinesize = 16 + 16 * ctx->is_444;
vdsp->emulated_edge_mc(&ctx->edge_buf_y[0], ptr_y,
linesize, ctx->m.linesize,
linesize / 2, 16,
0, 0, y_w, y_h);
vdsp->emulated_edge_mc(&ctx->edge_buf_uv[0][0], ptr_u,
uvlinesize, ctx->m.uvlinesize,
uvlinesize / 2, 16,
0, 0, uv_w, uv_h);
vdsp->emulated_edge_mc(&ctx->edge_buf_uv[1][0], ptr_v,
uvlinesize, ctx->m.uvlinesize,
uvlinesize / 2, 16,
0, 0, uv_w, uv_h);
dct_y_offset = bw * linesize / 2;
dct_uv_offset = bw * uvlinesize / 2;
ptr_y = &ctx->edge_buf_y[0];
ptr_u = &ctx->edge_buf_uv[0][0];
ptr_v = &ctx->edge_buf_uv[1][0];
}
if (!ctx->is_444) {
pdsp->get_pixels(ctx->blocks[0], ptr_y, linesize);
pdsp->get_pixels(ctx->blocks[1], ptr_y + bw, linesize);
pdsp->get_pixels(ctx->blocks[2], ptr_u, uvlinesize);
pdsp->get_pixels(ctx->blocks[3], ptr_v, 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 + dct_y_offset,
linesize);
ctx->get_pixels_8x4_sym(ctx->blocks[5],
ptr_y + dct_y_offset + bw,
linesize);
ctx->get_pixels_8x4_sym(ctx->blocks[6],
ptr_u + dct_uv_offset,
uvlinesize);
ctx->get_pixels_8x4_sym(ctx->blocks[7],
ptr_v + dct_uv_offset,
uvlinesize);
} else {
ctx->bdsp.clear_block(ctx->blocks[4]);
ctx->bdsp.clear_block(ctx->blocks[5]);
ctx->bdsp.clear_block(ctx->blocks[6]);
ctx->bdsp.clear_block(ctx->blocks[7]);
}
} else {
pdsp->get_pixels(ctx->blocks[4],
ptr_y + dct_y_offset, linesize);
pdsp->get_pixels(ctx->blocks[5],
ptr_y + dct_y_offset + bw, linesize);
pdsp->get_pixels(ctx->blocks[6],
ptr_u + dct_uv_offset, uvlinesize);
pdsp->get_pixels(ctx->blocks[7],
ptr_v + dct_uv_offset, uvlinesize);
}
} else {
pdsp->get_pixels(ctx->blocks[0], ptr_y, linesize);
pdsp->get_pixels(ctx->blocks[1], ptr_y + bw, linesize);
pdsp->get_pixels(ctx->blocks[6], ptr_y + dct_y_offset, linesize);
pdsp->get_pixels(ctx->blocks[7], ptr_y + dct_y_offset + bw, linesize);
pdsp->get_pixels(ctx->blocks[2], ptr_u, uvlinesize);
pdsp->get_pixels(ctx->blocks[3], ptr_u + bw, uvlinesize);
pdsp->get_pixels(ctx->blocks[8], ptr_u + dct_uv_offset, uvlinesize);
pdsp->get_pixels(ctx->blocks[9], ptr_u + dct_uv_offset + bw, uvlinesize);
pdsp->get_pixels(ctx->blocks[4], ptr_v, uvlinesize);
pdsp->get_pixels(ctx->blocks[5], ptr_v + bw, uvlinesize);
pdsp->get_pixels(ctx->blocks[10], ptr_v + dct_uv_offset, uvlinesize);
pdsp->get_pixels(ctx->blocks[11], ptr_v + dct_uv_offset + bw, uvlinesize);
}
}
static av_always_inline
int dnxhd_switch_matrix(DNXHDEncContext *ctx, int i)
{
int x;
if (ctx->is_444) {
x = (i >> 1) % 3;
} else {
const static uint8_t component[8]={0,0,1,2,0,0,1,2};
x = component[i];
}
return x;
}
static int dnxhd_calc_bits_thread(AVCodecContext *avctx, void *arg,
int jobnr, int threadnr)
{
DNXHDEncContext *ctx = avctx->priv_data;
int mb_y = jobnr, mb_x;
int qscale = ctx->qscale;
LOCAL_ALIGNED_16(int16_t, block, [64]);
ctx = ctx->thread[threadnr];
ctx->m.last_dc[0] =
ctx->m.last_dc[1] =
ctx->m.last_dc[2] = 1 << (ctx->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 ssd = 0;
int ac_bits = 0;
int dc_bits = 0;
int i;
dnxhd_get_blocks(ctx, mb_x, mb_y);
for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
int16_t *src_block = ctx->blocks[i];
int overflow, nbits, diff, last_index;
int n = dnxhd_switch_matrix(ctx, i);
memcpy(block, src_block, 64 * sizeof(*block));
last_index = ctx->m.dct_quantize(&ctx->m, block,
ctx->is_444 ? 4 * (n > 0): 4 & (2*i),
qscale, &overflow);
ac_bits += dnxhd_calc_ac_bits(ctx, block, last_index);
diff = block[0] - ctx->m.last_dc[n];
if (diff < 0)
nbits = av_log2_16bit(-2 * diff);
else
nbits = av_log2_16bit(2 * diff);
av_assert1(nbits < ctx->bit_depth + 4);
dc_bits += ctx->cid_table->dc_bits[nbits] + nbits;
ctx->m.last_dc[n] = block[0];
if (avctx->mb_decision == FF_MB_DECISION_RD || !RC_VARIANCE) {
dnxhd_unquantize_c(ctx, block, i, qscale, last_index);
ctx->m.idsp.idct(block);
ssd += dnxhd_ssd_block(block, src_block);
}
}
ctx->mb_rc[(qscale * ctx->m.mb_num) + mb].ssd = ssd;
ctx->mb_rc[(qscale * ctx->m.mb_num) + mb].bits = ac_bits + dc_bits + 12 +
(1 + ctx->is_444) * 8 * ctx->vlc_bits[0];
}
return 0;
}
static int dnxhd_encode_thread(AVCodecContext *avctx, void *arg,
int jobnr, int threadnr)
{
DNXHDEncContext *ctx = avctx->priv_data;
int mb_y = jobnr, mb_x;
ctx = ctx->thread[threadnr];
init_put_bits(&ctx->m.pb, (uint8_t *)arg + ctx->data_offset + ctx->slice_offs[jobnr],
ctx->slice_size[jobnr]);
ctx->m.last_dc[0] =
ctx->m.last_dc[1] =
ctx->m.last_dc[2] = 1 << (ctx->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];
int i;
put_bits(&ctx->m.pb, 11, qscale);
put_bits(&ctx->m.pb, 1, avctx->pix_fmt == AV_PIX_FMT_YUV444P10);
dnxhd_get_blocks(ctx, mb_x, mb_y);
for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
int16_t *block = ctx->blocks[i];
int overflow, n = dnxhd_switch_matrix(ctx, i);
int last_index = ctx->m.dct_quantize(&ctx->m, block,
ctx->is_444 ? (((i >> 1) % 3) < 1 ? 0 : 4): 4 & (2*i),
qscale, &overflow);
dnxhd_encode_block(ctx, block, last_index, n);
}
}
if (put_bits_count(&ctx->m.pb) & 31)
put_bits(&ctx->m.pb, 32 - (put_bits_count(&ctx->m.pb) & 31), 0);
flush_put_bits(&ctx->m.pb);
return 0;
}
static void dnxhd_setup_threads_slices(DNXHDEncContext *ctx)
{
int mb_y, mb_x;
int offset = 0;
for (mb_y = 0; mb_y < ctx->m.mb_height; mb_y++) {
int thread_size;
ctx->slice_offs[mb_y] = offset;
ctx->slice_size[mb_y] = 0;
for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) {
unsigned mb = mb_y * ctx->m.mb_width + mb_x;
ctx->slice_size[mb_y] += ctx->mb_bits[mb];
}
ctx->slice_size[mb_y] = (ctx->slice_size[mb_y] + 31) & ~31;
ctx->slice_size[mb_y] >>= 3;
thread_size = ctx->slice_size[mb_y];
offset += thread_size;
}
}
static int dnxhd_mb_var_thread(AVCodecContext *avctx, void *arg,
int jobnr, int threadnr)
{
DNXHDEncContext *ctx = avctx->priv_data;
int mb_y = jobnr, mb_x, x, y;
int partial_last_row = (mb_y == ctx->m.mb_height - 1) &&
((avctx->height >> ctx->interlaced) & 0xF);
ctx = ctx->thread[threadnr];
if (ctx->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;
int varc;
if (!partial_last_row && mb_x * 16 <= avctx->width - 16 && (avctx->width % 16) == 0) {
sum = ctx->m.mpvencdsp.pix_sum(pix, ctx->m.linesize);
varc = ctx->m.mpvencdsp.pix_norm1(pix, ctx->m.linesize);
} else {
int bw = FFMIN(avctx->width - 16 * mb_x, 16);
int bh = FFMIN((avctx->height >> ctx->interlaced) - 16 * mb_y, 16);
sum = varc = 0;
for (y = 0; y < bh; y++) {
for (x = 0; x < bw; x++) {
uint8_t val = pix[x + y * ctx->m.linesize];
sum += val;
varc += val * val;
}
}
}
varc = (varc - (((unsigned) sum * sum) >> 8) + 128) >> 8;
ctx->mb_cmp[mb].value = varc;
ctx->mb_cmp[mb].mb = mb;
}
} else { // 10-bit
const int 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 bw = FFMIN(avctx->width - 16 * mb_x, 16);
int bh = FFMIN((avctx->height >> ctx->interlaced) - 16 * mb_y, 16);
int mean, sqmean;
int i, j;
// Macroblocks are 16x16 pixels, unlike DCT blocks which are 8x8.
for (i = 0; i < bh; ++i) {
for (j = 0; j < bw; ++j) {
// Turn 16-bit pixels into 10-bit ones.
const int 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;
}
static int dnxhd_encode_rdo(AVCodecContext *avctx, DNXHDEncContext *ctx)
{
int lambda, up_step, down_step;
int last_lower = INT_MAX, last_higher = 0;
int x, y, q;
for (q = 1; q < avctx->qmax; q++) {
ctx->qscale = q;
avctx->execute2(avctx, dnxhd_calc_bits_thread,
NULL, NULL, ctx->m.mb_height);
}
up_step = down_step = 2 << LAMBDA_FRAC_BITS;
lambda = ctx->lambda;
for (;;) {
int bits = 0;
int end = 0;
if (lambda == last_higher) {
lambda++;
end = 1; // need to set final qscales/bits
}
for (y = 0; y < ctx->m.mb_height; y++) {
for (x = 0; x < ctx->m.mb_width; x++) {
unsigned min = UINT_MAX;
int qscale = 1;
int mb = y * ctx->m.mb_width + x;
int rc = 0;
for (q = 1; q < avctx->qmax; q++) {
int i = (q*ctx->m.mb_num) + mb;
unsigned score = ctx->mb_rc[i].bits * lambda +
((unsigned) ctx->mb_rc[i].ssd << LAMBDA_FRAC_BITS);
if (score < min) {
min = score;
qscale = q;
rc = i;
}
}
bits += ctx->mb_rc[rc].bits;
ctx->mb_qscale[mb] = qscale;
ctx->mb_bits[mb] = ctx->mb_rc[rc].bits;
}
bits = (bits + 31) & ~31; // padding
if (bits > ctx->frame_bits)
break;
}
if (end) {
if (bits > ctx->frame_bits)
return AVERROR(EINVAL);
break;
}
if (bits < ctx->frame_bits) {
last_lower = FFMIN(lambda, last_lower);
if (last_higher != 0)
lambda = (lambda+last_higher)>>1;
else
lambda -= down_step;
down_step = FFMIN((int64_t)down_step*5, INT_MAX);
up_step = 1<<LAMBDA_FRAC_BITS;
lambda = FFMAX(1, lambda);
if (lambda == last_lower)
break;
} else {
last_higher = FFMAX(lambda, last_higher);
if (last_lower != INT_MAX)
lambda = (lambda+last_lower)>>1;
else if ((int64_t)lambda + up_step > INT_MAX)
return AVERROR(EINVAL);
else
lambda += up_step;
up_step = FFMIN((int64_t)up_step*5, INT_MAX);
down_step = 1<<LAMBDA_FRAC_BITS;
}
}
ctx->lambda = lambda;
return 0;
}
static int dnxhd_find_qscale(DNXHDEncContext *ctx)
{
int bits = 0;
int up_step = 1;
int down_step = 1;
int last_higher = 0;
int last_lower = INT_MAX;
int qscale;
int x, y;
qscale = ctx->qscale;
for (;;) {
bits = 0;
ctx->qscale = qscale;
// XXX avoid recalculating bits
ctx->m.avctx->execute2(ctx->m.avctx, dnxhd_calc_bits_thread,
NULL, NULL, ctx->m.mb_height);
for (y = 0; y < ctx->m.mb_height; y++) {
for (x = 0; x < ctx->m.mb_width; x++)
bits += ctx->mb_rc[(qscale*ctx->m.mb_num) + (y*ctx->m.mb_width+x)].bits;
bits = (bits+31)&~31; // padding
if (bits > ctx->frame_bits)
break;
}
if (bits < ctx->frame_bits) {
if (qscale == 1)
return 1;
if (last_higher == qscale - 1) {
qscale = last_higher;
break;
}
last_lower = FFMIN(qscale, last_lower);
if (last_higher != 0)
qscale = (qscale + last_higher) >> 1;
else
qscale -= down_step++;
if (qscale < 1)
qscale = 1;
up_step = 1;
} else {
if (last_lower == qscale + 1)
break;
last_higher = FFMAX(qscale, last_higher);
if (last_lower != INT_MAX)
qscale = (qscale + last_lower) >> 1;
else
qscale += up_step++;
down_step = 1;
if (qscale >= ctx->m.avctx->qmax)
return AVERROR(EINVAL);
}
}
ctx->qscale = qscale;
return 0;
}
#define BUCKET_BITS 8
#define RADIX_PASSES 4
#define NBUCKETS (1 << BUCKET_BITS)
static inline int get_bucket(int value, int shift)
{
value >>= shift;
value &= NBUCKETS - 1;
return NBUCKETS - 1 - value;
}
static void radix_count(const RCCMPEntry *data, int size,
int buckets[RADIX_PASSES][NBUCKETS])
{
int i, j;
memset(buckets, 0, sizeof(buckets[0][0]) * RADIX_PASSES * NBUCKETS);
for (i = 0; i < size; i++) {
int v = data[i].value;
for (j = 0; j < RADIX_PASSES; j++) {
buckets[j][get_bucket(v, 0)]++;
v >>= BUCKET_BITS;
}
av_assert1(!v);
}
for (j = 0; j < RADIX_PASSES; j++) {
int offset = size;
for (i = NBUCKETS - 1; i >= 0; i--)
buckets[j][i] = offset -= buckets[j][i];
av_assert1(!buckets[j][0]);
}
}
static void radix_sort_pass(RCCMPEntry *dst, const RCCMPEntry *data,
int size, int buckets[NBUCKETS], int pass)
{
int shift = pass * BUCKET_BITS;
int i;
for (i = 0; i < size; i++) {
int v = get_bucket(data[i].value, shift);
int pos = buckets[v]++;
dst[pos] = data[i];
}
}
static void radix_sort(RCCMPEntry *data, RCCMPEntry *tmp, int size)
{
int buckets[RADIX_PASSES][NBUCKETS];
radix_count(data, size, buckets);
radix_sort_pass(tmp, data, size, buckets[0], 0);
radix_sort_pass(data, tmp, size, buckets[1], 1);
if (buckets[2][NBUCKETS - 1] || buckets[3][NBUCKETS - 1]) {
radix_sort_pass(tmp, data, size, buckets[2], 2);
radix_sort_pass(data, tmp, size, buckets[3], 3);
}
}
static int dnxhd_encode_fast(AVCodecContext *avctx, DNXHDEncContext *ctx)
{
int max_bits = 0;
int ret, x, y;
if ((ret = dnxhd_find_qscale(ctx)) < 0)
return ret;
for (y = 0; y < ctx->m.mb_height; y++) {
for (x = 0; x < ctx->m.mb_width; x++) {
int mb = y * ctx->m.mb_width + x;
int rc = (ctx->qscale * ctx->m.mb_num ) + mb;
int delta_bits;
ctx->mb_qscale[mb] = ctx->qscale;
ctx->mb_bits[mb] = ctx->mb_rc[rc].bits;
max_bits += ctx->mb_rc[rc].bits;
if (!RC_VARIANCE) {
delta_bits = ctx->mb_rc[rc].bits -
ctx->mb_rc[rc + ctx->m.mb_num].bits;
ctx->mb_cmp[mb].mb = mb;
ctx->mb_cmp[mb].value =
delta_bits ? ((ctx->mb_rc[rc].ssd -
ctx->mb_rc[rc + ctx->m.mb_num].ssd) * 100) /
delta_bits
: INT_MIN; // avoid increasing qscale
}
}
max_bits += 31; // worst padding
}
if (!ret) {
if (RC_VARIANCE)
avctx->execute2(avctx, dnxhd_mb_var_thread,
NULL, NULL, ctx->m.mb_height);
radix_sort(ctx->mb_cmp, ctx->mb_cmp_tmp, ctx->m.mb_num);
for (x = 0; x < ctx->m.mb_num && max_bits > ctx->frame_bits; x++) {
int mb = ctx->mb_cmp[x].mb;
int rc = (ctx->qscale * ctx->m.mb_num ) + mb;
max_bits -= ctx->mb_rc[rc].bits -
ctx->mb_rc[rc + ctx->m.mb_num].bits;
ctx->mb_qscale[mb] = ctx->qscale + 1;
ctx->mb_bits[mb] = ctx->mb_rc[rc + ctx->m.mb_num].bits;
}
}
return 0;
}
static void dnxhd_load_picture(DNXHDEncContext *ctx, const AVFrame *frame)
{
int i;
for (i = 0; i < ctx->m.avctx->thread_count; i++) {
ctx->thread[i]->m.linesize = frame->linesize[0] << ctx->interlaced;
ctx->thread[i]->m.uvlinesize = frame->linesize[1] << ctx->interlaced;
ctx->thread[i]->dct_y_offset = ctx->m.linesize *8;
ctx->thread[i]->dct_uv_offset = ctx->m.uvlinesize*8;
}
ctx->cur_field = frame->interlaced_frame && !frame->top_field_first;
}
static int dnxhd_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *frame, int *got_packet)
{
DNXHDEncContext *ctx = avctx->priv_data;
int first_field = 1;
int offset, i, ret;
uint8_t *buf;
if ((ret = ff_alloc_packet2(avctx, pkt, ctx->frame_size, 0)) < 0)
return ret;
buf = pkt->data;
dnxhd_load_picture(ctx, frame);
encode_coding_unit:
for (i = 0; i < 3; i++) {
ctx->src[i] = frame->data[i];
if (ctx->interlaced && ctx->cur_field)
ctx->src[i] += frame->linesize[i];
}
dnxhd_write_header(avctx, buf);
if (avctx->mb_decision == FF_MB_DECISION_RD)
ret = dnxhd_encode_rdo(avctx, ctx);
else
ret = dnxhd_encode_fast(avctx, ctx);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR,
"picture could not fit ratecontrol constraints, increase qmax\n");
return ret;
}
dnxhd_setup_threads_slices(ctx);
offset = 0;
for (i = 0; i < ctx->m.mb_height; i++) {
AV_WB32(ctx->msip + i * 4, offset);
offset += ctx->slice_size[i];
av_assert1(!(ctx->slice_size[i] & 3));
}
avctx->execute2(avctx, dnxhd_encode_thread, buf, NULL, ctx->m.mb_height);
av_assert1(ctx->data_offset + offset + 4 <= ctx->coding_unit_size);
memset(buf + ctx->data_offset + offset, 0,
ctx->coding_unit_size - 4 - offset - ctx->data_offset);
AV_WB32(buf + ctx->coding_unit_size - 4, 0x600DC0DE); // EOF
if (ctx->interlaced && first_field) {
first_field = 0;
ctx->cur_field ^= 1;
buf += ctx->coding_unit_size;
goto encode_coding_unit;
}
ff_side_data_set_encoder_stats(pkt, ctx->qscale * FF_QP2LAMBDA, NULL, 0, AV_PICTURE_TYPE_I);
pkt->flags |= AV_PKT_FLAG_KEY;
*got_packet = 1;
return 0;
}
static av_cold int dnxhd_encode_end(AVCodecContext *avctx)
{
DNXHDEncContext *ctx = avctx->priv_data;
int i;
av_freep(&ctx->orig_vlc_codes);
av_freep(&ctx->orig_vlc_bits);
av_freep(&ctx->run_codes);
av_freep(&ctx->run_bits);
av_freep(&ctx->mb_bits);
av_freep(&ctx->mb_qscale);
av_freep(&ctx->mb_rc);
av_freep(&ctx->mb_cmp);
av_freep(&ctx->mb_cmp_tmp);
av_freep(&ctx->slice_size);
av_freep(&ctx->slice_offs);
av_freep(&ctx->qmatrix_c);
av_freep(&ctx->qmatrix_l);
av_freep(&ctx->qmatrix_c16);
av_freep(&ctx->qmatrix_l16);
if (avctx->active_thread_type == FF_THREAD_SLICE) {
for (i = 1; i < avctx->thread_count; i++)
av_freep(&ctx->thread[i]);
}
return 0;
}
static const AVCodecDefault dnxhd_defaults[] = {
{ "qmax", "1024" }, /* Maximum quantization scale factor allowed for VC-3 */
{ NULL },
};
const AVCodec ff_dnxhd_encoder = {
.name = "dnxhd",
.long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_DNXHD,
.priv_data_size = sizeof(DNXHDEncContext),
.init = dnxhd_encode_init,
.encode2 = dnxhd_encode_picture,
.close = dnxhd_encode_end,
.capabilities = AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_FRAME_THREADS,
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
.pix_fmts = (const enum AVPixelFormat[]) {
AV_PIX_FMT_YUV422P,
AV_PIX_FMT_YUV422P10,
AV_PIX_FMT_YUV444P10,
AV_PIX_FMT_GBRP10,
AV_PIX_FMT_NONE
},
.priv_class = &dnxhd_class,
.defaults = dnxhd_defaults,
.profiles = NULL_IF_CONFIG_SMALL(ff_dnxhd_profiles),
};
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