* H.264 encoding using the x264 library
* Copyright (C) 2005 Mans Rullgard <mru@inprovide.com>
*
- * This library is free software; you can redistribute it and/or
+ * 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 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * 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 this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avcodec.h"
#include <x264.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
typedef struct X264Context {
x264_param_t params;
X264_log(void *p, int level, const char *fmt, va_list args)
{
static const int level_map[] = {
- [X264_LOG_ERROR] = AV_LOG_ERROR,
- [X264_LOG_WARNING] = AV_LOG_ERROR,
- [X264_LOG_INFO] = AV_LOG_INFO,
- [X264_LOG_DEBUG] = AV_LOG_DEBUG
+ [X264_LOG_ERROR] = AV_LOG_ERROR,
+ [X264_LOG_WARNING] = AV_LOG_ERROR,
+ [X264_LOG_INFO] = AV_LOG_INFO,
+ [X264_LOG_DEBUG] = AV_LOG_DEBUG
};
if(level < 0 || level > X264_LOG_DEBUG)
- return;
+ return;
av_vlog(p, level_map[level], fmt, args);
}
int i;
for(i = 0; i < nnal; i++){
- int s = x264_nal_encode(p, &size, 1, nals + i);
- if(s < 0)
- return -1;
- p += s;
+ int s = x264_nal_encode(p, &size, 1, nals + i);
+ if(s < 0)
+ return -1;
+ p += s;
}
return p - buf;
}
-extern int
+static int
X264_frame(AVCodecContext *ctx, uint8_t *buf, int bufsize, void *data)
{
X264Context *x4 = ctx->priv_data;
x4->pic.img.i_csp = X264_CSP_I420;
x4->pic.img.i_plane = 3;
- for(i = 0; i < 3; i++){
- x4->pic.img.plane[i] = frame->data[i];
- x4->pic.img.i_stride[i] = frame->linesize[i];
- }
+ 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 = X264_TYPE_AUTO;
+ x4->pic.i_pts = frame->pts;
+ x4->pic.i_type = X264_TYPE_AUTO;
+ }
- if(x264_encoder_encode(x4->enc, &nal, &nnal, &x4->pic, &pic_out))
- return -1;
+ if(x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL,
+ &pic_out))
+ return -1;
bufsize = encode_nals(buf, bufsize, nal, nnal);
if(bufsize < 0)
- return -1;
+ return -1;
/* FIXME: dts */
x4->out_pic.pts = pic_out.i_pts;
X264Context *x4 = avctx->priv_data;
if(x4->enc)
- x264_encoder_close(x4->enc);
+ x264_encoder_close(x4->enc);
return 0;
}
-extern int
+static int
X264_init(AVCodecContext *avctx)
{
X264Context *x4 = avctx->priv_data;
x4->params.i_keyint_max = avctx->gop_size;
x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
- x4->params.rc.i_rc_buffer_size = avctx->rc_buffer_size / 1000;
- if(avctx->rc_buffer_size)
- x4->params.rc.b_cbr = 1;
+ 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 & CODEC_FLAG_PASS1);
+ if(avctx->flags & CODEC_FLAG_PASS2) x4->params.rc.b_stat_read = 1;
+ else{
+ if(avctx->crf){
+ x4->params.rc.i_rc_method = X264_RC_CRF;
+ x4->params.rc.f_rf_constant = avctx->crf;
+ }else if(avctx->cqp > -1){
+ x4->params.rc.i_rc_method = X264_RC_CQP;
+ x4->params.rc.i_qp_constant = avctx->cqp;
+ }
+ }
+
+ // if neither crf nor cqp modes are selected we have to enable the RC
+ // we do it this way because we cannot check if the bitrate has been set
+ if(!(avctx->crf || (avctx->cqp > -1))) x4->params.rc.i_rc_method = X264_RC_ABR;
+
x4->params.i_bframe = avctx->max_b_frames;
x4->params.b_cabac = avctx->coder_type == FF_CODER_TYPE_AC;
+ x4->params.b_bframe_adaptive = avctx->b_frame_strategy;
+ x4->params.i_bframe_bias = avctx->bframebias;
+ x4->params.b_bframe_pyramid = (avctx->flags2 & CODEC_FLAG2_BPYRAMID);
+ avctx->has_b_frames= (avctx->flags2 & CODEC_FLAG2_BPYRAMID) ? 2 : !!avctx->max_b_frames;
+
+ 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;
+
+ x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
+
+ x4->params.b_deblocking_filter = (avctx->flags & CODEC_FLAG_LOOP_FILTER);
+ x4->params.i_deblocking_filter_alphac0 = avctx->deblockalpha;
+ x4->params.i_deblocking_filter_beta = avctx->deblockbeta;
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;
- if(avctx->flags & CODEC_FLAG_QSCALE && avctx->global_quality > 0)
- x4->params.rc.i_qp_constant =
- 12 + 6 * log2((double) avctx->global_quality / FF_QP2LAMBDA);
+ 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.rc.f_complexity_blur = avctx->complexityblur;
+
+ 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;
- x4->params.i_fps_num = avctx->frame_rate;
- x4->params.i_fps_den = avctx->frame_rate_base;
+ x4->params.i_fps_num = avctx->time_base.den;
+ x4->params.i_fps_den = avctx->time_base.num;
+
+ x4->params.analyse.inter = 0;
+ if(avctx->partitions){
+ if(avctx->partitions & X264_PART_I4X4)
+ x4->params.analyse.inter |= X264_ANALYSE_I4x4;
+ if(avctx->partitions & X264_PART_I8X8)
+ x4->params.analyse.inter |= X264_ANALYSE_I8x8;
+ if(avctx->partitions & X264_PART_P8X8)
+ x4->params.analyse.inter |= X264_ANALYSE_PSUB16x16;
+ if(avctx->partitions & X264_PART_P4X4)
+ x4->params.analyse.inter |= X264_ANALYSE_PSUB8x8;
+ if(avctx->partitions & X264_PART_B8X8)
+ x4->params.analyse.inter |= X264_ANALYSE_BSUB16x16;
+ }
+
+ x4->params.analyse.i_direct_mv_pred = avctx->directpred;
+
+ x4->params.analyse.b_weighted_bipred = (avctx->flags2 & CODEC_FLAG2_WPRED);
+
+ if(avctx->me_method == ME_EPZS)
+ x4->params.analyse.i_me_method = X264_ME_DIA;
+ else if(avctx->me_method == ME_HEX)
+ x4->params.analyse.i_me_method = X264_ME_HEX;
+ else if(avctx->me_method == ME_UMH)
+ x4->params.analyse.i_me_method = X264_ME_UMH;
+ else if(avctx->me_method == ME_FULL)
+ x4->params.analyse.i_me_method = X264_ME_ESA;
+ else x4->params.analyse.i_me_method = X264_ME_HEX;
+
+ x4->params.analyse.i_me_range = avctx->me_range;
+ x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
+
+ x4->params.analyse.b_bidir_me = (avctx->bidir_refine > 0);
+ x4->params.analyse.b_bframe_rdo = (avctx->flags2 & CODEC_FLAG2_BRDO);
+ x4->params.analyse.b_mixed_references =
+ (avctx->flags2 & CODEC_FLAG2_MIXED_REFS);
+ x4->params.analyse.b_chroma_me = (avctx->me_cmp & FF_CMP_CHROMA);
+ x4->params.analyse.b_transform_8x8 = (avctx->flags2 & CODEC_FLAG2_8X8DCT);
+ x4->params.analyse.b_fast_pskip = (avctx->flags2 & CODEC_FLAG2_FASTPSKIP);
+
+ x4->params.analyse.i_trellis = avctx->trellis;
+ x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
+
+ if(avctx->level > 0) x4->params.i_level_idc = avctx->level;
+
+ x4->params.rc.f_rate_tolerance =
+ (float)avctx->bit_rate_tolerance/avctx->bit_rate;
+
+ if((avctx->rc_buffer_size != 0) &&
+ (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;
+
+ x4->params.rc.f_ip_factor = 1/fabs(avctx->i_quant_factor);
+ x4->params.rc.f_pb_factor = avctx->b_quant_factor;
+ x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
+ x4->params.rc.psz_rc_eq = avctx->rc_eq;
+
+ x4->params.analyse.b_psnr = (avctx->flags & CODEC_FLAG_PSNR);
+ x4->params.i_log_level = X264_LOG_DEBUG;
+
+ x4->params.b_aud = (avctx->flags2 & CODEC_FLAG2_AUD);
+
+ x4->params.i_threads = avctx->thread_count;
+
+ if(avctx->flags & CODEC_FLAG_GLOBAL_HEADER){
+ x4->params.b_repeat_headers = 0;
+ }
x4->enc = x264_encoder_open(&x4->params);
if(!x4->enc)
avctx->coded_frame = &x4->out_pic;
+ if(avctx->flags & CODEC_FLAG_GLOBAL_HEADER){
+ x264_nal_t *nal;
+ int nnal, i, s = 0;
+
+ x264_encoder_headers(x4->enc, &nal, &nnal);
+
+ /* 5 bytes NAL header + worst case escaping */
+ for(i = 0; i < nnal; i++)
+ s += 5 + nal[i].i_payload * 4 / 3;
+
+ avctx->extradata = av_malloc(s);
+ avctx->extradata_size = encode_nals(avctx->extradata, s, nal, nnal);
+ }
+
return 0;
}
.init = X264_init,
.encode = X264_frame,
.close = X264_close,
+ .capabilities = CODEC_CAP_DELAY,
.pix_fmts = (enum PixelFormat[]) { PIX_FMT_YUV420P, -1 }
};
projects / ffmpeg / blobdiff