diff --git a/libavcodec/wmaprodec.c b/libavcodec/wmaprodec.c index 495e27a324..cf8fa32619 100644 --- a/libavcodec/wmaprodec.c +++ b/libavcodec/wmaprodec.c @@ -188,6 +188,7 @@ typedef struct WMAProDecodeCtx { int16_t subwoofer_cutoffs[WMAPRO_BLOCK_SIZES]; ///< subwoofer cutoff values /* packet decode state */ + GetBitContext pgb; ///< bitstream reader context for the packet uint8_t packet_sequence_number; ///< current packet number int num_saved_bits; ///< saved number of bits int frame_offset; ///< frame offset in the bit reservoir @@ -1441,8 +1442,8 @@ static void save_bits(WMAProDecodeCtx *s, GetBitContext* gb, int len, static int decode_packet(AVCodecContext *avctx, void *data, int *data_size, AVPacket* avpkt) { - GetBitContext gb; WMAProDecodeCtx *s = avctx->priv_data; + GetBitContext* gb = &s->pgb; const uint8_t* buf = avpkt->data; int buf_size = avpkt->size; int more_frames = 1; @@ -1463,12 +1464,12 @@ static int decode_packet(AVCodecContext *avctx, buf_size = avctx->block_align; /** parse packet header */ - init_get_bits(&gb, buf, s->buf_bit_size); - packet_sequence_number = get_bits(&gb, 4); - skip_bits(&gb, 2); + init_get_bits(gb, buf, s->buf_bit_size); + packet_sequence_number = get_bits(gb, 4); + skip_bits(gb, 2); /** get number of bits that need to be added to the previous frame */ - num_bits_prev_frame = get_bits(&gb, s->log2_frame_size); + num_bits_prev_frame = get_bits(gb, s->log2_frame_size); dprintf(avctx, "packet[%d]: nbpf %x\n", avctx->frame_number, num_bits_prev_frame); @@ -1484,7 +1485,7 @@ static int decode_packet(AVCodecContext *avctx, if (num_bits_prev_frame > 0) { /** append the previous frame data to the remaining data from the previous packet to create a full frame */ - save_bits(s, &gb, num_bits_prev_frame, 1); + save_bits(s, gb, num_bits_prev_frame, 1); dprintf(avctx, "accumulated %x bits of frame data\n", s->num_saved_bits - s->frame_offset); @@ -1499,12 +1500,12 @@ static int decode_packet(AVCodecContext *avctx, s->packet_loss = 0; /** decode the rest of the packet */ while (!s->packet_loss && more_frames && - remaining_bits(s, &gb) > s->log2_frame_size) { - int frame_size = show_bits(&gb, s->log2_frame_size); + remaining_bits(s, gb) > s->log2_frame_size) { + int frame_size = show_bits(gb, s->log2_frame_size); /** there is enough data for a full frame */ - if (remaining_bits(s, &gb) >= frame_size && frame_size > 0) { - save_bits(s, &gb, frame_size, 0); + if (remaining_bits(s, gb) >= frame_size && frame_size > 0) { + save_bits(s, gb, frame_size, 0); /** decode the frame */ more_frames = decode_frame(s); @@ -1516,10 +1517,10 @@ static int decode_packet(AVCodecContext *avctx, more_frames = 0; } - if (!s->packet_loss && remaining_bits(s, &gb) > 0) { + if (!s->packet_loss && remaining_bits(s, gb) > 0) { /** save the rest of the data so that it can be decoded with the next packet */ - save_bits(s, &gb, remaining_bits(s, &gb), 0); + save_bits(s, gb, remaining_bits(s, gb), 0); } *data_size = (int8_t *)s->samples - (int8_t *)data;