Fix buffer_size argument to init_put_bits() in multiple encoders.

Several encoders were multiplying the buffer size by 8, in order to get
a bit size. However, the buffer_size argument is for the byte size of
the buffer. We had experienced crashes encoding prores (Anatoliy) at
size 4096x4096.
(cherry picked from commit 50833c9f7b)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/aacenc.c

@@ -165,7 +165,7 @@ static void put_audio_specific_config(AVCodecContext *avctx)
     PutBitContext pb;
     AACEncContext *s = avctx->priv_data;
 
-    init_put_bits(&pb, avctx->extradata, avctx->extradata_size*8);
+    init_put_bits(&pb, avctx->extradata, avctx->extradata_size);
     put_bits(&pb, 5, 2); //object type - AAC-LC
     put_bits(&pb, 4, s->samplerate_index); //sample rate index
     put_bits(&pb, 4, s->channels);

libavcodec/adpcmenc.c

@@ -541,7 +541,7 @@ static int adpcm_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
     case AV_CODEC_ID_ADPCM_IMA_QT:
     {
         PutBitContext pb;
-        init_put_bits(&pb, dst, pkt_size * 8);
+        init_put_bits(&pb, dst, pkt_size);
 
         for (ch = 0; ch < avctx->channels; ch++) {
             ADPCMChannelStatus *status = &c->status[ch];
@@ -571,7 +571,7 @@ static int adpcm_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
     case AV_CODEC_ID_ADPCM_SWF:
     {
         PutBitContext pb;
-        init_put_bits(&pb, dst, pkt_size * 8);
+        init_put_bits(&pb, dst, pkt_size);
 
         n = frame->nb_samples - 1;
 

libavcodec/faxcompr.c

@@ -251,7 +251,7 @@ static void put_line(uint8_t *dst, int size, int width, const int *runs)
     PutBitContext pb;
     int run, mode = ~0, pix_left = width, run_idx = 0;
 
-    init_put_bits(&pb, dst, size * 8);
+    init_put_bits(&pb, dst, size);
     while (pix_left > 0) {
         run       = runs[run_idx++];
         mode      = ~mode;

libavcodec/flashsv2enc.c

@@ -287,7 +287,7 @@ static int write_header(FlashSV2Context * s, uint8_t * buf, int buf_size)
     if (buf_size < 5)
         return -1;
 
-    init_put_bits(&pb, buf, buf_size * 8);
+    init_put_bits(&pb, buf, buf_size);
 
     put_bits(&pb, 4, (s->block_width  >> 4) - 1);
     put_bits(&pb, 12, s->image_width);

libavcodec/flashsvenc.c

@@ -151,7 +151,7 @@ static int encode_bitstream(FlashSVContext *s, const AVFrame *p, uint8_t *buf,
     int buf_pos, res;
     int pred_blocks = 0;
 
-    init_put_bits(&pb, buf, buf_size * 8);
+    init_put_bits(&pb, buf, buf_size);
 
     put_bits(&pb,  4, block_width / 16 - 1);
     put_bits(&pb, 12, s->image_width);

libavcodec/nellymoserenc.c

@@ -303,7 +303,7 @@ static void encode_block(NellyMoserEncodeContext *s, unsigned char *output, int
 
     apply_mdct(s);
 
-    init_put_bits(&pb, output, output_size * 8);
+    init_put_bits(&pb, output, output_size);
 
     i = 0;
     for (band = 0; band < NELLY_BANDS; band++) {

libavcodec/proresenc_anatoliy.c

@@ -304,7 +304,7 @@ static int encode_slice_plane(AVCodecContext *avctx, int mb_count,
     }
 
     blocks_per_slice = mb_count << (2 - chroma);
-    init_put_bits(&pb, buf, buf_size << 3);
+    init_put_bits(&pb, buf, buf_size);
 
     encode_dc_coeffs(&pb, blocks, blocks_per_slice, qmat);
     encode_ac_coeffs(avctx, &pb, blocks, blocks_per_slice, qmat);

libavcodec/proresenc_kostya.c

@@ -1057,7 +1057,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                     slice_hdr        = pkt->data + (slice_hdr        - start);
                     tmp              = pkt->data + (tmp              - start);
                 }
-                init_put_bits(&pb, buf, (pkt_size - (buf - orig_buf)) * 8);
+                init_put_bits(&pb, buf, (pkt_size - (buf - orig_buf)));
                 ret = encode_slice(avctx, pic, &pb, sizes, x, y, q,
                                    mbs_per_slice);
                 if (ret < 0)

libavcodec/s302menc.c

@@ -82,7 +82,7 @@ static int s302m_encode2_frame(AVCodecContext *avctx, AVPacket *avpkt,
         return ret;
 
     o = avpkt->data;
-    init_put_bits(&pb, o, buf_size * 8);
+    init_put_bits(&pb, o, buf_size);
     put_bits(&pb, 16, buf_size - AES3_HEADER_LEN);
     put_bits(&pb, 2, (avctx->channels - 2) >> 1);   // number of channels
     put_bits(&pb, 8, 0);                            // channel ID