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FFmpeg/libavcodec/asvenc.c
Andreas Rheinhardt 0971fcf0a0 avcodec/codec_internal, all: Use macros to set deprecated AVCodec fields 
The aim of this is twofold: a) Clang warns when setting a deprecated
field in a definition and because several of the widely set
AVCodec fields are deprecated, one gets several hundred warnings
from Clang for an ordinary build. Yet fortunately Clang (unlike GCC)
allows to disable deprecation warnings inside a definition, so
that one can create simple macros to set these fields that also suppress
deprecation warnings for Clang. This has already been done in
fdff1b9cbf for AVCodec.channel_layouts.
b) Using macros will allow to easily migrate these fields to internal ones.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2025-03-10 00:57:23 +01:00

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/*
* Copyright (c) 2003 Michael Niedermayer
*
* 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
* ASUS V1/V2 encoder.
*/
#include "config_components.h"
#include "libavutil/attributes.h"
#include "libavutil/mem.h"
#include "libavutil/mem_internal.h"
#include "aandcttab.h"
#include "asv.h"
#include "avcodec.h"
#include "codec_internal.h"
#include "encode.h"
#include "fdctdsp.h"
#include "mpeg12data.h"
#include "pixblockdsp.h"
#include "put_bits.h"
typedef struct ASVEncContext {
ASVCommonContext c;
PutBitContext pb;
PixblockDSPContext pdsp;
FDCTDSPContext fdsp;
DECLARE_ALIGNED(32, int16_t, block)[6][64];
int q_intra_matrix[64];
} ASVEncContext;
static inline void asv1_put_level(PutBitContext *pb, int level)
{
unsigned int index = level + 3;
if (index <= 6) {
put_bits(pb, ff_asv_level_tab[index][1], ff_asv_level_tab[index][0]);
} else {
put_bits(pb, 3, 0); /* Escape code */
put_sbits(pb, 8, level);
}
}
static inline void asv2_put_level(ASVEncContext *a, PutBitContext *pb, int level)
{
unsigned int index = level + 31;
if (index <= 62) {
put_bits_le(pb, ff_asv2_level_tab[index][1], ff_asv2_level_tab[index][0]);
} else {
put_bits_le(pb, 5, 0); /* Escape code */
if (level < -128 || level > 127) {
av_log(a->c.avctx, AV_LOG_WARNING, "Clipping level %d, increase qscale\n", level);
level = av_clip_int8(level);
}
put_bits_le(pb, 8, level & 0xFF);
}
}
static inline void asv1_encode_block(ASVEncContext *a, int16_t block[64])
{
int i;
int nc_count = 0;
put_bits(&a->pb, 8, (block[0] + 32) >> 6);
block[0] = 0;
for (i = 0; i < 10; i++) {
const int index = ff_asv_scantab[4 * i];
int ccp = 0;
if ((block[index + 0] = (block[index + 0] *
a->q_intra_matrix[index + 0] + (1 << 15)) >> 16))
ccp |= 8;
if ((block[index + 8] = (block[index + 8] *
a->q_intra_matrix[index + 8] + (1 << 15)) >> 16))
ccp |= 4;
if ((block[index + 1] = (block[index + 1] *
a->q_intra_matrix[index + 1] + (1 << 15)) >> 16))
ccp |= 2;
if ((block[index + 9] = (block[index + 9] *
a->q_intra_matrix[index + 9] + (1 << 15)) >> 16))
ccp |= 1;
if (ccp) {
for (; nc_count; nc_count--)
put_bits(&a->pb, 2, 2); /* Skip */
put_bits(&a->pb, ff_asv_ccp_tab[ccp][1], ff_asv_ccp_tab[ccp][0]);
if (ccp & 8)
asv1_put_level(&a->pb, block[index + 0]);
if (ccp & 4)
asv1_put_level(&a->pb, block[index + 8]);
if (ccp & 2)
asv1_put_level(&a->pb, block[index + 1]);
if (ccp & 1)
asv1_put_level(&a->pb, block[index + 9]);
} else {
nc_count++;
}
}
put_bits(&a->pb, 5, 0xF); /* End of block */
}
static inline void asv2_encode_block(ASVEncContext *a, int16_t block[64])
{
int i;
int count = 0;
for (count = 63; count > 3; count--) {
const int index = ff_asv_scantab[count];
if ((block[index] * a->q_intra_matrix[index] + (1 << 15)) >> 16)
break;
}
count >>= 2;
put_bits_le(&a->pb, 4, count);
put_bits_le(&a->pb, 8, (block[0] + 32) >> 6);
block[0] = 0;
for (i = 0; i <= count; i++) {
const int index = ff_asv_scantab[4 * i];
int ccp = 0;
if ((block[index + 0] = (block[index + 0] *
a->q_intra_matrix[index + 0] + (1 << 15)) >> 16))
ccp |= 8;
if ((block[index + 8] = (block[index + 8] *
a->q_intra_matrix[index + 8] + (1 << 15)) >> 16))
ccp |= 4;
if ((block[index + 1] = (block[index + 1] *
a->q_intra_matrix[index + 1] + (1 << 15)) >> 16))
ccp |= 2;
if ((block[index + 9] = (block[index + 9] *
a->q_intra_matrix[index + 9] + (1 << 15)) >> 16))
ccp |= 1;
av_assert2(i || ccp < 8);
if (i)
put_bits_le(&a->pb, ff_asv_ac_ccp_tab[ccp][1], ff_asv_ac_ccp_tab[ccp][0]);
else
put_bits_le(&a->pb, ff_asv_dc_ccp_tab[ccp][1], ff_asv_dc_ccp_tab[ccp][0]);
if (ccp) {
if (ccp & 8)
asv2_put_level(a, &a->pb, block[index + 0]);
if (ccp & 4)
asv2_put_level(a, &a->pb, block[index + 8]);
if (ccp & 2)
asv2_put_level(a, &a->pb, block[index + 1]);
if (ccp & 1)
asv2_put_level(a, &a->pb, block[index + 9]);
}
}
}
#define MAX_MB_SIZE (30 * 16 * 16 * 3 / 2 / 8)
static inline int encode_mb(ASVEncContext *a, int16_t block[6][64])
{
int i;
av_assert0(put_bytes_left(&a->pb, 0) >= MAX_MB_SIZE);
if (a->c.avctx->codec_id == AV_CODEC_ID_ASV1) {
for (i = 0; i < 6; i++)
asv1_encode_block(a, block[i]);
} else {
for (i = 0; i < 6; i++) {
asv2_encode_block(a, block[i]);
}
}
return 0;
}
static inline void dct_get(ASVEncContext *a, const AVFrame *frame,
int mb_x, int mb_y)
{
int16_t (*block)[64] = a->block;
int linesize = frame->linesize[0];
int i;
const uint8_t *ptr_y = frame->data[0] + (mb_y * 16 * linesize) + mb_x * 16;
const uint8_t *ptr_cb = frame->data[1] + (mb_y * 8 * frame->linesize[1]) + mb_x * 8;
const uint8_t *ptr_cr = frame->data[2] + (mb_y * 8 * frame->linesize[2]) + mb_x * 8;
a->pdsp.get_pixels(block[0], ptr_y, linesize);
a->pdsp.get_pixels(block[1], ptr_y + 8, linesize);
a->pdsp.get_pixels(block[2], ptr_y + 8 * linesize, linesize);
a->pdsp.get_pixels(block[3], ptr_y + 8 * linesize + 8, linesize);
for (i = 0; i < 4; i++)
a->fdsp.fdct(block[i]);
if (!(a->c.avctx->flags & AV_CODEC_FLAG_GRAY)) {
a->pdsp.get_pixels(block[4], ptr_cb, frame->linesize[1]);
a->pdsp.get_pixels(block[5], ptr_cr, frame->linesize[2]);
for (i = 4; i < 6; i++)
a->fdsp.fdct(block[i]);
}
}
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *pict, int *got_packet)
{
ASVEncContext *const a = avctx->priv_data;
const ASVCommonContext *const c = &a->c;
int size, ret;
if (pict->width % 16 || pict->height % 16) {
AVFrame *clone = av_frame_alloc();
int i;
if (!clone)
return AVERROR(ENOMEM);
clone->format = pict->format;
clone->width = FFALIGN(pict->width, 16);
clone->height = FFALIGN(pict->height, 16);
ret = av_frame_get_buffer(clone, 0);
if (ret < 0) {
av_frame_free(&clone);
return ret;
}
ret = av_frame_copy(clone, pict);
if (ret < 0) {
av_frame_free(&clone);
return ret;
}
for (i = 0; i<3; i++) {
int x, y;
int w = AV_CEIL_RSHIFT(pict->width, !!i);
int h = AV_CEIL_RSHIFT(pict->height, !!i);
int w2 = AV_CEIL_RSHIFT(clone->width, !!i);
int h2 = AV_CEIL_RSHIFT(clone->height, !!i);
for (y=0; y<h; y++)
for (x=w; x<w2; x++)
clone->data[i][x + y*clone->linesize[i]] =
clone->data[i][w - 1 + y*clone->linesize[i]];
for (y=h; y<h2; y++)
for (x=0; x<w2; x++)
clone->data[i][x + y*clone->linesize[i]] =
clone->data[i][x + (h-1)*clone->linesize[i]];
}
ret = encode_frame(avctx, pkt, clone, got_packet);
av_frame_free(&clone);
return ret;
}
if ((ret = ff_alloc_packet(avctx, pkt, c->mb_height * c->mb_width * MAX_MB_SIZE +
FF_INPUT_BUFFER_MIN_SIZE)) < 0)
return ret;
init_put_bits(&a->pb, pkt->data, pkt->size);
for (int mb_y = 0; mb_y < c->mb_height2; mb_y++) {
for (int mb_x = 0; mb_x < c->mb_width2; mb_x++) {
dct_get(a, pict, mb_x, mb_y);
encode_mb(a, a->block);
}
}
if (c->mb_width2 != c->mb_width) {
int mb_x = c->mb_width2;
for (int mb_y = 0; mb_y < c->mb_height2; mb_y++) {
dct_get(a, pict, mb_x, mb_y);
encode_mb(a, a->block);
}
}
if (c->mb_height2 != c->mb_height) {
int mb_y = c->mb_height2;
for (int mb_x = 0; mb_x < c->mb_width; mb_x++) {
dct_get(a, pict, mb_x, mb_y);
encode_mb(a, a->block);
}
}
if (avctx->codec_id == AV_CODEC_ID_ASV1)
flush_put_bits(&a->pb);
else
flush_put_bits_le(&a->pb);
AV_WN32(put_bits_ptr(&a->pb), 0);
size = (put_bytes_output(&a->pb) + 3) / 4;
if (avctx->codec_id == AV_CODEC_ID_ASV1) {
c->bbdsp.bswap_buf((uint32_t *) pkt->data,
(uint32_t *) pkt->data, size);
}
pkt->size = size * 4;
*got_packet = 1;
return 0;
}
static av_cold int encode_init(AVCodecContext *avctx)
{
ASVEncContext *const a = avctx->priv_data;
int i;
const int scale = avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2;
int inv_qscale;
ff_asv_common_init(avctx);
ff_fdctdsp_init(&a->fdsp, avctx);
ff_pixblockdsp_init(&a->pdsp, avctx);
if (avctx->global_quality <= 0)
avctx->global_quality = 4 * FF_QUALITY_SCALE;
inv_qscale = (32 * scale * FF_QUALITY_SCALE +
avctx->global_quality / 2) / avctx->global_quality;
avctx->extradata = av_mallocz(8);
if (!avctx->extradata)
return AVERROR(ENOMEM);
avctx->extradata_size = 8;
AV_WLA(32, avctx->extradata, inv_qscale);
((uint32_t *) avctx->extradata)[1] = av_le2ne32(AV_RL32("ASUS"));
for (i = 0; i < 64; i++) {
if (a->fdsp.fdct == ff_fdct_ifast) {
int q = 32LL * scale * ff_mpeg1_default_intra_matrix[i] * ff_aanscales[i];
a->q_intra_matrix[i] = (((int64_t)inv_qscale << 30) + q / 2) / q;
} else {
int q = 32 * scale * ff_mpeg1_default_intra_matrix[i];
a->q_intra_matrix[i] = ((inv_qscale << 16) + q / 2) / q;
}
}
return 0;
}
#if CONFIG_ASV1_ENCODER
const FFCodec ff_asv1_encoder = {
.p.name = "asv1",
CODEC_LONG_NAME("ASUS V1"),
.p.type = AVMEDIA_TYPE_VIDEO,
.p.id = AV_CODEC_ID_ASV1,
.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
.priv_data_size = sizeof(ASVEncContext),
.init = encode_init,
FF_CODEC_ENCODE_CB(encode_frame),
CODEC_PIXFMTS(AV_PIX_FMT_YUV420P),
.color_ranges = AVCOL_RANGE_MPEG,
};
#endif
#if CONFIG_ASV2_ENCODER
const FFCodec ff_asv2_encoder = {
.p.name = "asv2",
CODEC_LONG_NAME("ASUS V2"),
.p.type = AVMEDIA_TYPE_VIDEO,
.p.id = AV_CODEC_ID_ASV2,
.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
.priv_data_size = sizeof(ASVEncContext),
.init = encode_init,
FF_CODEC_ENCODE_CB(encode_frame),
CODEC_PIXFMTS(AV_PIX_FMT_YUV420P),
.color_ranges = AVCOL_RANGE_MPEG,
};
#endif
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