On Wed, 20 Apr 2011 15:53:48 -0700, Alex Converse <alex.conve...@gmail.com>
wrote:
> diff --git a/cmdutils.c b/cmdutils.c
> index f1cbd55..4aef03d 100644
> --- a/cmdutils.c
> +++ b/cmdutils.c
> @@ -361,8 +361,9 @@ void set_context_opts(void *ctx, void *opts_ctx, int
> flags, AVCodec *codec)
> /* We need to use a differnt system to pass options to the private
> context because
> it is not known which codec and thus context kind that will be
> when parsing options
> we thus use opt_values directly instead of opts_ctx */
> - if(!str && priv_ctx && av_get_string(priv_ctx, opt_names[i], &opt,
> buf, sizeof(buf))){
> - av_set_string3(priv_ctx, opt_names[i], opt_values[i], 1, NULL);
> + if(!str && priv_ctx) {
> + if (av_find_opt(priv_ctx, opt_names[i], NULL, flags, flags))
> + av_set_string3(priv_ctx, opt_names[i], opt_values[i], 0,
> NULL);
> }
> }
This part looks unrelated.
> }
> diff --git a/libavcodec/libx264.c b/libavcodec/libx264.c
> index 5825945..df4c577 100644
> --- a/libavcodec/libx264.c
> +++ b/libavcodec/libx264.c
> @@ -19,6 +19,7 @@
> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
> USA
> */
>
> +#include "libavutil/opt.h"
> #include "avcodec.h"
> #include <x264.h>
> #include <math.h>
> @@ -27,12 +28,17 @@
> #include <string.h>
>
> typedef struct X264Context {
> + AVClass *class;
> x264_param_t params;
> x264_t *enc;
> x264_picture_t pic;
> uint8_t *sei;
> int sei_size;
> AVFrame out_pic;
> + const char *preset;
> + const char *tune;
> + const char *profile;
> + int fastfirstpass;
The strings are leaked.
> } X264Context;
>
> static void X264_log(void *p, int level, const char *fmt, va_list args)
> @@ -163,32 +169,7 @@ static av_cold int X264_init(AVCodecContext *avctx)
> x4->sei_size = 0;
> x264_param_default(&x4->params);
>
> - x4->params.pf_log = X264_log;
> - x4->params.p_log_private = avctx;
> -
> x4->params.i_keyint_max = avctx->gop_size;
> - x4->params.b_intra_refresh = avctx->flags2 &
> CODEC_FLAG2_INTRA_REFRESH;
> - x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
> - 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;
> - x4->params.rc.f_rf_constant_max = avctx->crf_max;
> - } 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;
> @@ -217,13 +198,6 @@ static av_cold int X264_init(AVCodecContext *avctx)
>
> 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 = x4->params.i_timebase_den = avctx->time_base.den;
> - x4->params.i_fps_den = x4->params.i_timebase_num = avctx->time_base.num;
> -
> x4->params.analyse.inter = 0;
> if (avctx->partitions) {
> if (avctx->partitions & X264_PART_I4X4)
> @@ -277,20 +251,65 @@ static av_cold int X264_init(AVCodecContext *avctx)
> if (avctx->level > 0)
> x4->params.i_level_idc = avctx->level;
>
> + x4->params.rc.b_mb_tree = !!(avctx->flags2 &
> CODEC_FLAG2_MBTREE);
> + 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;
> +
So those parameters can be overwritten by preset/profile? Do we really
want that?
> + if (x4->preset || x4->tune) {
> + if (x264_param_default_preset(&x4->params, x4->preset, x4->tune) < 0)
> + return -1;
> + }
> +
> + if (x4->fastfirstpass)
> + x264_param_apply_fastfirstpass(&x4->params);
> +
> + if (x4->profile)
> + if (x264_param_apply_profile(&x4->params, x4->profile) < 0)
> + return -1;
> +
> + x4->params.pf_log = X264_log;
> + x4->params.p_log_private = avctx;
> + x4->params.i_log_level = X264_LOG_DEBUG;
> +
> + x4->params.b_intra_refresh = avctx->flags2 &
> CODEC_FLAG2_INTRA_REFRESH;
> + x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
> + 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;
> + x4->params.rc.f_rf_constant_max = avctx->crf_max;
> + } 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;
> +
> if (avctx->rc_buffer_size && avctx->rc_initial_buffer_occupancy &&
> (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;
> }
>
> - x4->params.rc.b_mb_tree = !!(avctx->flags2 &
> CODEC_FLAG2_MBTREE);
> - 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.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 = x4->params.i_timebase_den = avctx->time_base.den;
> + x4->params.i_fps_den = x4->params.i_timebase_num = avctx->time_base.num;
>
> x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR;
> x4->params.analyse.b_ssim = avctx->flags2 & CODEC_FLAG2_SSIM;
> - x4->params.i_log_level = X264_LOG_DEBUG;
>
> x4->params.b_aud = avctx->flags2 & CODEC_FLAG2_AUD;
>
> @@ -305,6 +324,11 @@ static av_cold int X264_init(AVCodecContext *avctx)
> if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
> x4->params.b_repeat_headers = 0;
>
> + // update AVCodecContext with x264 parameters
> + avctx->has_b_frames = x4->params.i_bframe_pyramid ? 2 :
> !!x4->params.i_bframe;
> + avctx->bit_rate = x4->params.rc.i_bitrate*1000;
> + avctx->crf = x4->params.rc.f_rf_constant;
> +
I'm wondering what's all this random shuffling for. It also seems to
disagree with recommendation in x264.h:
In order to replicate x264CLI's option handling, these functions MUST
be called in the following order:
1) x264_param_default_preset
2) Custom user options (via param_parse or directly assigned
variables)
3) x264_param_apply_fastfirstpass
4) x264_param_apply_profile
--
Anton Khirnov
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