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FFmpeg/libavcodec/libxavs.c
wm4 b945fed629 avcodec: add metadata to identify wrappers and hardware decoders 
Explicitly identify decoder/encoder wrappers with a common name. This
saves API users from guessing by the name suffix. For example, they
don't have to guess that "h264_qsv" is the h264 QSV implementation, and
instead they can just check the AVCodec .codec and .wrapper_name fields.

Explicitly mark AVCodec entries that are hardware decoders or most
likely hardware decoders with new AV_CODEC_CAPs. The purpose is allowing
API users listing hardware decoders in a more generic way. The proposed
AVCodecHWConfig does not provide this information fully, because it's
concerned with decoder configuration, not information about the fact
whether the hardware is used or not.

AV_CODEC_CAP_HYBRID exists specifically for QSV, which can have software
implementations in case the hardware is not capable.

Based on a patch by Philip Langdale <philipl@overt.org>.

Merges Libav commit 47687a2f8a.
2017-12-14 19:37:56 +01:00

483 lines
17 KiB
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/*
* AVS encoding using the xavs library
* Copyright (C) 2010 Amanda, Y.N. Wu <amanda11192003@gmail.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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <stdint.h>
#include <float.h>
#include <xavs.h>
#include "avcodec.h"
#include "internal.h"
#include "libavutil/internal.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#define END_OF_STREAM 0x001
#define XAVS_PART_I8X8 0x002 /* Analyze i8x8 (requires 8x8 transform) */
#define XAVS_PART_P8X8 0x010 /* Analyze p16x8, p8x16 and p8x8 */
#define XAVS_PART_B8X8 0x100 /* Analyze b16x8, b*/
typedef struct XavsContext {
AVClass *class;
xavs_param_t params;
xavs_t *enc;
xavs_picture_t pic;
uint8_t *sei;
int sei_size;
int end_of_stream;
float crf;
int cqp;
int b_bias;
float cplxblur;
int direct_pred;
int aud;
int fast_pskip;
int motion_est;
int mbtree;
int mixed_refs;
int b_frame_strategy;
int chroma_offset;
int scenechange_threshold;
int noise_reduction;
int64_t *pts_buffer;
int out_frame_count;
} XavsContext;
static void XAVS_log(void *p, int level, const char *fmt, va_list args)
{
static const int level_map[] = {
[XAVS_LOG_ERROR] = AV_LOG_ERROR,
[XAVS_LOG_WARNING] = AV_LOG_WARNING,
[XAVS_LOG_INFO] = AV_LOG_INFO,
[XAVS_LOG_DEBUG] = AV_LOG_DEBUG
};
if (level < 0 || level > XAVS_LOG_DEBUG)
return;
av_vlog(p, level_map[level], fmt, args);
}
static int encode_nals(AVCodecContext *ctx, AVPacket *pkt,
xavs_nal_t *nals, int nnal)
{
XavsContext *x4 = ctx->priv_data;
uint8_t *p;
int i, s, ret, size = x4->sei_size + AV_INPUT_BUFFER_MIN_SIZE;
if (!nnal)
return 0;
for (i = 0; i < nnal; i++)
size += nals[i].i_payload;
if ((ret = ff_alloc_packet2(ctx, pkt, size, 0)) < 0)
return ret;
p = pkt->data;
/* Write the SEI as part of the first frame. */
if (x4->sei_size > 0 && nnal > 0) {
memcpy(p, x4->sei, x4->sei_size);
p += x4->sei_size;
x4->sei_size = 0;
}
for (i = 0; i < nnal; i++) {
s = xavs_nal_encode(p, &size, 1, nals + i);
if (s < 0)
return -1;
p += s;
}
pkt->size = p - pkt->data;
return 1;
}
static int XAVS_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *frame, int *got_packet)
{
XavsContext *x4 = avctx->priv_data;
xavs_nal_t *nal;
int nnal, i, ret;
xavs_picture_t pic_out;
int pict_type;
x4->pic.img.i_csp = XAVS_CSP_I420;
x4->pic.img.i_plane = 3;
if (frame) {
for (i = 0; i < 3; i++) {
x4->pic.img.plane[i] = frame->data[i];
x4->pic.img.i_stride[i] = frame->linesize[i];
}
x4->pic.i_pts = frame->pts;
x4->pic.i_type = XAVS_TYPE_AUTO;
x4->pts_buffer[avctx->frame_number % (avctx->max_b_frames+1)] = frame->pts;
}
if (xavs_encoder_encode(x4->enc, &nal, &nnal,
frame? &x4->pic: NULL, &pic_out) < 0)
return -1;
ret = encode_nals(avctx, pkt, nal, nnal);
if (ret < 0)
return -1;
if (!ret) {
if (!frame && !(x4->end_of_stream)) {
if ((ret = ff_alloc_packet2(avctx, pkt, 4, 0)) < 0)
return ret;
pkt->data[0] = 0x0;
pkt->data[1] = 0x0;
pkt->data[2] = 0x01;
pkt->data[3] = 0xb1;
pkt->dts = 2*x4->pts_buffer[(x4->out_frame_count-1)%(avctx->max_b_frames+1)] -
x4->pts_buffer[(x4->out_frame_count-2)%(avctx->max_b_frames+1)];
x4->end_of_stream = END_OF_STREAM;
*got_packet = 1;
}
return 0;
}
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
avctx->coded_frame->pts = pic_out.i_pts;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
pkt->pts = pic_out.i_pts;
if (avctx->has_b_frames) {
if (!x4->out_frame_count)
pkt->dts = pkt->pts - (x4->pts_buffer[1] - x4->pts_buffer[0]);
else
pkt->dts = x4->pts_buffer[(x4->out_frame_count-1)%(avctx->max_b_frames+1)];
} else
pkt->dts = pkt->pts;
switch (pic_out.i_type) {
case XAVS_TYPE_IDR:
case XAVS_TYPE_I:
pict_type = AV_PICTURE_TYPE_I;
break;
case XAVS_TYPE_P:
pict_type = AV_PICTURE_TYPE_P;
break;
case XAVS_TYPE_B:
case XAVS_TYPE_BREF:
pict_type = AV_PICTURE_TYPE_B;
break;
default:
pict_type = AV_PICTURE_TYPE_NONE;
}
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
avctx->coded_frame->pict_type = pict_type;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
/* There is no IDR frame in AVS JiZhun */
/* Sequence header is used as a flag */
if (pic_out.i_type == XAVS_TYPE_I) {
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
avctx->coded_frame->key_frame = 1;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
pkt->flags |= AV_PKT_FLAG_KEY;
}
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
avctx->coded_frame->quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
ff_side_data_set_encoder_stats(pkt, (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA, NULL, 0, pict_type);
x4->out_frame_count++;
*got_packet = ret;
return 0;
}
static av_cold int XAVS_close(AVCodecContext *avctx)
{
XavsContext *x4 = avctx->priv_data;
av_freep(&avctx->extradata);
av_freep(&x4->sei);
av_freep(&x4->pts_buffer);
if (x4->enc)
xavs_encoder_close(x4->enc);
return 0;
}
static av_cold int XAVS_init(AVCodecContext *avctx)
{
XavsContext *x4 = avctx->priv_data;
x4->sei_size = 0;
xavs_param_default(&x4->params);
x4->params.pf_log = XAVS_log;
x4->params.p_log_private = avctx;
x4->params.i_keyint_max = avctx->gop_size;
if (avctx->bit_rate) {
x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
x4->params.rc.i_rc_method = XAVS_RC_ABR;
}
x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
x4->params.rc.b_stat_write = avctx->flags & AV_CODEC_FLAG_PASS1;
if (avctx->flags & AV_CODEC_FLAG_PASS2) {
x4->params.rc.b_stat_read = 1;
} else {
if (x4->crf >= 0) {
x4->params.rc.i_rc_method = XAVS_RC_CRF;
x4->params.rc.f_rf_constant = x4->crf;
} else if (x4->cqp >= 0) {
x4->params.rc.i_rc_method = XAVS_RC_CQP;
x4->params.rc.i_qp_constant = x4->cqp;
}
}
if (x4->aud >= 0)
x4->params.b_aud = x4->aud;
if (x4->mbtree >= 0)
x4->params.rc.b_mb_tree = x4->mbtree;
if (x4->direct_pred >= 0)
x4->params.analyse.i_direct_mv_pred = x4->direct_pred;
if (x4->fast_pskip >= 0)
x4->params.analyse.b_fast_pskip = x4->fast_pskip;
if (x4->motion_est >= 0)
x4->params.analyse.i_me_method = x4->motion_est;
if (x4->mixed_refs >= 0)
x4->params.analyse.b_mixed_references = x4->mixed_refs;
if (x4->b_bias != INT_MIN)
x4->params.i_bframe_bias = x4->b_bias;
if (x4->cplxblur >= 0)
x4->params.rc.f_complexity_blur = x4->cplxblur;
x4->params.i_bframe = avctx->max_b_frames;
/* cabac is not included in AVS JiZhun Profile */
x4->params.b_cabac = 0;
#if FF_API_PRIVATE_OPT
FF_DISABLE_DEPRECATION_WARNINGS
if (avctx->b_frame_strategy)
x4->b_frame_strategy = avctx->b_frame_strategy;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
x4->params.i_bframe_adaptive = x4->b_frame_strategy;
avctx->has_b_frames = !!avctx->max_b_frames;
/* AVS doesn't allow B picture as reference */
/* The max allowed reference frame number of B is 2 */
x4->params.i_keyint_min = avctx->keyint_min;
if (x4->params.i_keyint_min > x4->params.i_keyint_max)
x4->params.i_keyint_min = x4->params.i_keyint_max;
#if FF_API_PRIVATE_OPT
FF_DISABLE_DEPRECATION_WARNINGS
if (avctx->scenechange_threshold)
x4->scenechange_threshold = avctx->scenechange_threshold;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
x4->params.i_scenecut_threshold = x4->scenechange_threshold;
// x4->params.b_deblocking_filter = avctx->flags & AV_CODEC_FLAG_LOOP_FILTER;
x4->params.rc.i_qp_min = avctx->qmin;
x4->params.rc.i_qp_max = avctx->qmax;
x4->params.rc.i_qp_step = avctx->max_qdiff;
x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */
x4->params.i_frame_reference = avctx->refs;
x4->params.i_width = avctx->width;
x4->params.i_height = avctx->height;
x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num;
x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den;
/* This is only used for counting the fps */
x4->params.i_fps_num = avctx->time_base.den;
x4->params.i_fps_den = avctx->time_base.num;
x4->params.analyse.inter = XAVS_ANALYSE_I8x8 |XAVS_ANALYSE_PSUB16x16| XAVS_ANALYSE_BSUB16x16;
x4->params.analyse.i_me_range = avctx->me_range;
x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
/* AVS P2 only enables 8x8 transform */
x4->params.analyse.b_transform_8x8 = 1; //avctx->flags2 & AV_CODEC_FLAG2_8X8DCT;
x4->params.analyse.i_trellis = avctx->trellis;
#if FF_API_PRIVATE_OPT
FF_DISABLE_DEPRECATION_WARNINGS
if (avctx->noise_reduction >= 0)
x4->noise_reduction = avctx->noise_reduction;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
x4->params.analyse.i_noise_reduction = x4->noise_reduction;
if (avctx->level > 0)
x4->params.i_level_idc = avctx->level;
if (avctx->bit_rate > 0)
x4->params.rc.f_rate_tolerance =
(float)avctx->bit_rate_tolerance / avctx->bit_rate;
if ((avctx->rc_buffer_size) &&
(avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
x4->params.rc.f_vbv_buffer_init =
(float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
} else
x4->params.rc.f_vbv_buffer_init = 0.9;
/* TAG:do we have MB tree RC method */
/* what is the RC method we are now using? Default NO */
x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor);
x4->params.rc.f_pb_factor = avctx->b_quant_factor;
#if FF_API_PRIVATE_OPT
FF_DISABLE_DEPRECATION_WARNINGS
if (avctx->chromaoffset)
x4->chroma_offset = avctx->chromaoffset;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
x4->params.analyse.i_chroma_qp_offset = x4->chroma_offset;
x4->params.analyse.b_psnr = avctx->flags & AV_CODEC_FLAG_PSNR;
x4->params.i_log_level = XAVS_LOG_DEBUG;
x4->params.i_threads = avctx->thread_count;
x4->params.b_interlaced = avctx->flags & AV_CODEC_FLAG_INTERLACED_DCT;
if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER)
x4->params.b_repeat_headers = 0;
x4->enc = xavs_encoder_open(&x4->params);
if (!x4->enc)
return -1;
if (!(x4->pts_buffer = av_mallocz_array((avctx->max_b_frames+1), sizeof(*x4->pts_buffer))))
return AVERROR(ENOMEM);
/* TAG: Do we have GLOBAL HEADER in AVS */
/* We Have PPS and SPS in AVS */
if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER && 0) {
xavs_nal_t *nal;
int nnal, s, i, size;
uint8_t *p;
s = xavs_encoder_headers(x4->enc, &nal, &nnal);
avctx->extradata = p = av_malloc(s);
for (i = 0; i < nnal; i++) {
/* Don't put the SEI in extradata. */
if (nal[i].i_type == NAL_SEI) {
x4->sei = av_malloc( 5 + nal[i].i_payload * 4 / 3 );
if (xavs_nal_encode(x4->sei, &x4->sei_size, 1, nal + i) < 0)
return -1;
continue;
}
size = xavs_nal_encode(p, &s, 1, nal + i);
if (size < 0)
return -1;
p += size;
}
avctx->extradata_size = p - avctx->extradata;
}
return 0;
}
#define OFFSET(x) offsetof(XavsContext, x)
#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
{ "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE },
{ "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, INT_MAX, VE },
{ "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, {.i64 = INT_MIN}, INT_MIN, INT_MAX, VE },
{ "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE},
{ "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, INT_MAX, VE, "direct-pred" },
{ "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" },
{ "spatial", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" },
{ "temporal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },
{ "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" },
{ "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_BOOL, {.i64 = -1 }, -1, 1, VE},
{ "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_BOOL, {.i64 = -1 }, -1, 1, VE},
{ "mixed-refs", "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, VE },
{ "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_BOOL, {.i64 = -1 }, -1, 1, VE},
{ "motion-est", "Set motion estimation method", OFFSET(motion_est), AV_OPT_TYPE_INT, { .i64 = XAVS_ME_DIA }, -1, XAVS_ME_TESA, VE, "motion-est"},
{ "dia", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_DIA }, INT_MIN, INT_MAX, VE, "motion-est" },
{ "hex", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_HEX }, INT_MIN, INT_MAX, VE, "motion-est" },
{ "umh", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_UMH }, INT_MIN, INT_MAX, VE, "motion-est" },
{ "esa", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_ESA }, INT_MIN, INT_MAX, VE, "motion-est" },
{ "tesa", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_TESA }, INT_MIN, INT_MAX, VE, "motion-est" },
{ "b_strategy", "Strategy to choose between I/P/B-frames", OFFSET(b_frame_strategy), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 2, VE},
{ "chromaoffset", "QP difference between chroma and luma", OFFSET(chroma_offset), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, VE},
{ "sc_threshold", "Scene change threshold", OFFSET(scenechange_threshold), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, VE},
{ "noise_reduction", "Noise reduction", OFFSET(noise_reduction), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, VE},
{ NULL },
};
static const AVClass xavs_class = {
.class_name = "libxavs",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
static const AVCodecDefault xavs_defaults[] = {
{ "b", "0" },
{ NULL },
};
AVCodec ff_libxavs_encoder = {
.name = "libxavs",
.long_name = NULL_IF_CONFIG_SMALL("libxavs Chinese AVS (Audio Video Standard)"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_CAVS,
.priv_data_size = sizeof(XavsContext),
.init = XAVS_init,
.encode2 = XAVS_frame,
.close = XAVS_close,
.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AUTO_THREADS,
.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
.priv_class = &xavs_class,
.defaults = xavs_defaults,
.wrapper_name = "libxavs",
};
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