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mpegvideo_enc: handle encoding errors with b_strategy=2

This commit is contained in:
Anton Khirnov 2016-09-21 20:21:58 +02:00
parent 6f733ecab6
commit f03f78bc1c
1 changed files with 18 additions and 0 deletions
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18
libavcodec/mpegvideo_enc.c
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@ -1265,6 +1265,7 @@ static int estimate_best_b_count(MpegEncContext *s)
int i, j, out_size, p_lambda, b_lambda, lambda2;
int64_t best_rd = INT64_MAX;
int best_b_count = -1;
int ret = 0;
if (!c)
return AVERROR(ENOMEM);
@ -1338,6 +1339,10 @@ static int estimate_best_b_count(MpegEncContext *s)
s->tmp_frames[0]->quality = 1 * FF_QP2LAMBDA;
out_size = encode_frame(c, s->tmp_frames[0]);
if (out_size < 0) {
ret = out_size;
goto fail;
}
//rd += (out_size * lambda2) >> FF_LAMBDA_SHIFT;
@ -1349,6 +1354,10 @@ static int estimate_best_b_count(MpegEncContext *s)
s->tmp_frames[i + 1]->quality = is_p ? p_lambda : b_lambda;
out_size = encode_frame(c, s->tmp_frames[i + 1]);
if (out_size < 0) {
ret = out_size;
goto fail;
}
rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3);
}
@ -1356,6 +1365,10 @@ static int estimate_best_b_count(MpegEncContext *s)
/* get the delayed frames */
while (out_size) {
out_size = encode_frame(c, NULL);
if (out_size < 0) {
ret = out_size;
goto fail;
}
rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3);
}
@ -1370,6 +1383,9 @@ static int estimate_best_b_count(MpegEncContext *s)
avcodec_free_context(&c);
return best_b_count;
fail:
avcodec_free_context(&c);
return ret;
}
static int select_input_picture(MpegEncContext *s)
@ -1450,6 +1466,8 @@ static int select_input_picture(MpegEncContext *s)
}
} else if (s->b_frame_strategy == 2) {
b_frames = estimate_best_b_count(s);
if (b_frames < 0)
return b_frames;
}
emms_c();