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mpegvideo_enc: use the AVFrame API properly.

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This commit is contained in:
Anton Khirnov 2013-11-09 10:14:46 +01:00
parent a6064b12b4
commit 1c01b0253e
2 changed files with 33 additions and 25 deletions
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3
libavcodec/mpegvideo.h
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@ -754,6 +754,9 @@ typedef struct MpegEncContext {
ERContext er;
int error_rate;
/* temporary frames used by b_frame_strategy = 2 */
AVFrame *tmp_frames[MAX_B_FRAMES + 2];
} MpegEncContext;
#define REBASE_PICTURE(pic, new_ctx, old_ctx) \

55
libavcodec/mpegvideo_enc.c
View File

@ -221,7 +221,7 @@ static void MPV_encode_defaults(MpegEncContext *s)
av_cold int ff_MPV_encode_init(AVCodecContext *avctx)
{
MpegEncContext *s = avctx->priv_data;
int i;
int i, ret;
int chroma_h_shift, chroma_v_shift;
MPV_encode_defaults(s);
@ -780,12 +780,29 @@ av_cold int ff_MPV_encode_init(AVCodecContext *avctx)
FF_ENABLE_DEPRECATION_WARNINGS;
#endif
if (avctx->b_frame_strategy == 2) {
for (i = 0; i < s->max_b_frames + 2; i++) {
s->tmp_frames[i] = av_frame_alloc();
if (!s->tmp_frames[i])
return AVERROR(ENOMEM);
s->tmp_frames[i]->format = AV_PIX_FMT_YUV420P;
s->tmp_frames[i]->width = s->width >> avctx->brd_scale;
s->tmp_frames[i]->height = s->height >> avctx->brd_scale;
ret = av_frame_get_buffer(s->tmp_frames[i], 32);
if (ret < 0)
return ret;
}
}
return 0;
}
av_cold int ff_MPV_encode_end(AVCodecContext *avctx)
{
MpegEncContext *s = avctx->priv_data;
int i;
ff_rate_control_uninit(s);
@ -796,6 +813,9 @@ av_cold int ff_MPV_encode_end(AVCodecContext *avctx)
av_freep(&avctx->extradata);
for (i = 0; i < FF_ARRAY_ELEMS(s->tmp_frames); i++)
av_frame_free(&s->tmp_frames[i]);
return 0;
}
@ -1025,7 +1045,6 @@ static int estimate_best_b_count(MpegEncContext *s)
{
AVCodec *codec = avcodec_find_encoder(s->avctx->codec_id);
AVCodecContext *c = avcodec_alloc_context3(NULL);
AVFrame input[MAX_B_FRAMES + 2];
const int scale = s->avctx->brd_scale;
int i, j, out_size, p_lambda, b_lambda, lambda2;
int64_t best_rd = INT64_MAX;
@ -1060,19 +1079,9 @@ static int estimate_best_b_count(MpegEncContext *s)
return -1;
for (i = 0; i < s->max_b_frames + 2; i++) {
int ysize = c->width * c->height;
int csize = (c->width / 2) * (c->height / 2);
Picture pre_input, *pre_input_ptr = i ? s->input_picture[i - 1] :
s->next_picture_ptr;
avcodec_get_frame_defaults(&input[i]);
input[i].data[0] = av_malloc(ysize + 2 * csize);
input[i].data[1] = input[i].data[0] + ysize;
input[i].data[2] = input[i].data[1] + csize;
input[i].linesize[0] = c->width;
input[i].linesize[1] =
input[i].linesize[2] = c->width / 2;
if (pre_input_ptr && (!i || s->input_picture[i - 1])) {
pre_input = *pre_input_ptr;
@ -1082,13 +1091,13 @@ static int estimate_best_b_count(MpegEncContext *s)
pre_input.f.data[2] += INPLACE_OFFSET;
}
s->dsp.shrink[scale](input[i].data[0], input[i].linesize[0],
s->dsp.shrink[scale](s->tmp_frames[i]->data[0], s->tmp_frames[i]->linesize[0],
pre_input.f.data[0], pre_input.f.linesize[0],
c->width, c->height);
s->dsp.shrink[scale](input[i].data[1], input[i].linesize[1],
s->dsp.shrink[scale](s->tmp_frames[i]->data[1], s->tmp_frames[i]->linesize[1],
pre_input.f.data[1], pre_input.f.linesize[1],
c->width >> 1, c->height >> 1);
s->dsp.shrink[scale](input[i].data[2], input[i].linesize[2],
s->dsp.shrink[scale](s->tmp_frames[i]->data[2], s->tmp_frames[i]->linesize[2],
pre_input.f.data[2], pre_input.f.linesize[2],
c->width >> 1, c->height >> 1);
}
@ -1102,21 +1111,21 @@ static int estimate_best_b_count(MpegEncContext *s)
c->error[0] = c->error[1] = c->error[2] = 0;
input[0].pict_type = AV_PICTURE_TYPE_I;
input[0].quality = 1 * FF_QP2LAMBDA;
s->tmp_frames[0]->pict_type = AV_PICTURE_TYPE_I;
s->tmp_frames[0]->quality = 1 * FF_QP2LAMBDA;
out_size = encode_frame(c, &input[0]);
out_size = encode_frame(c, s->tmp_frames[0]);
//rd += (out_size * lambda2) >> FF_LAMBDA_SHIFT;
for (i = 0; i < s->max_b_frames + 1; i++) {
int is_p = i % (j + 1) == j || i == s->max_b_frames;
input[i + 1].pict_type = is_p ?
s->tmp_frames[i + 1]->pict_type = is_p ?
AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_B;
input[i + 1].quality = is_p ? p_lambda : b_lambda;
s->tmp_frames[i + 1]->quality = is_p ? p_lambda : b_lambda;
out_size = encode_frame(c, &input[i + 1]);
out_size = encode_frame(c, s->tmp_frames[i + 1]);
rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3);
}
@ -1138,10 +1147,6 @@ static int estimate_best_b_count(MpegEncContext *s)
avcodec_close(c);
av_freep(&c);
for (i = 0; i < s->max_b_frames + 2; i++) {
av_freep(&input[i].data[0]);
}
return best_b_count;
}