diff options
Diffstat (limited to 'libavcodec/wmaenc.c')
-rw-r--r-- | libavcodec/wmaenc.c | 35 |
1 files changed, 27 insertions, 8 deletions
diff --git a/libavcodec/wmaenc.c b/libavcodec/wmaenc.c index 6ec6d7ce57..29baa10230 100644 --- a/libavcodec/wmaenc.c +++ b/libavcodec/wmaenc.c @@ -39,6 +39,12 @@ static int encode_init(AVCodecContext * avctx){ return AVERROR(EINVAL); } + if (avctx->sample_rate > 48000) { + av_log(avctx, AV_LOG_ERROR, "sample rate is too high: %d > 48kHz", + avctx->sample_rate); + return AVERROR(EINVAL); + } + if(avctx->bit_rate < 24*1000) { av_log(avctx, AV_LOG_ERROR, "bitrate too low: got %i, need 24000 or higher\n", avctx->bit_rate); @@ -64,6 +70,8 @@ static int encode_init(AVCodecContext * avctx){ s->use_exp_vlc = flags2 & 0x0001; s->use_bit_reservoir = flags2 & 0x0002; s->use_variable_block_len = flags2 & 0x0004; + if (avctx->channels == 2) + s->ms_stereo = 1; ff_wma_init(avctx, flags2); @@ -71,8 +79,12 @@ static int encode_init(AVCodecContext * avctx){ for(i = 0; i < s->nb_block_sizes; i++) ff_mdct_init(&s->mdct_ctx[i], s->frame_len_bits - i + 1, 0, 1.0); - avctx->block_align= - s->block_align= avctx->bit_rate*(int64_t)s->frame_len / (avctx->sample_rate*8); + s->block_align = avctx->bit_rate * (int64_t)s->frame_len / + (avctx->sample_rate * 8); + s->block_align = FFMIN(s->block_align, MAX_CODED_SUPERFRAME_SIZE); + avctx->block_align = s->block_align; + avctx->bit_rate = avctx->block_align * 8LL * avctx->sample_rate / + s->frame_len; //av_log(NULL, AV_LOG_ERROR, "%d %d %d %d\n", s->block_align, avctx->bit_rate, s->frame_len, avctx->sample_rate); avctx->frame_size= s->frame_len; @@ -181,7 +193,7 @@ static int encode_block(WMACodecContext *s, float (*src_coefs)[BLOCK_MAX_SIZE], } if (s->nb_channels == 2) { - put_bits(&s->pb, 1, s->ms_stereo= 1); + put_bits(&s->pb, 1, !!s->ms_stereo); } for(ch = 0; ch < s->nb_channels; ch++) { @@ -355,6 +367,11 @@ static int encode_superframe(AVCodecContext *avctx, } } + if (buf_size < 2 * MAX_CODED_SUPERFRAME_SIZE) { + av_log(avctx, AV_LOG_ERROR, "output buffer size is too small\n"); + return AVERROR(EINVAL); + } + #if 1 total_gain= 128; for(i=64; i; i>>=1){ @@ -379,15 +396,17 @@ static int encode_superframe(AVCodecContext *avctx, } #endif - encode_frame(s, s->coefs, buf, buf_size, total_gain); + if ((i = encode_frame(s, s->coefs, buf, buf_size, total_gain)) >= 0) { + av_log(avctx, AV_LOG_ERROR, "required frame size too large. please " + "use a higher bit rate.\n"); + return AVERROR(EINVAL); + } assert((put_bits_count(&s->pb) & 7) == 0); - i= s->block_align - (put_bits_count(&s->pb)+7)/8; - assert(i>=0); - while(i--) + while (i++) put_bits(&s->pb, 8, 'N'); flush_put_bits(&s->pb); - return put_bits_ptr(&s->pb) - s->pb.buf; + return s->block_align; } AVCodec ff_wmav1_encoder = { |