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mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Originally committed as revision 19765 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Sascha Sommer 2009-09-05 10:18:23 +00:00
parent 42ea968188
commit 9244370a7c

View File

@ -1449,62 +1449,62 @@ static int decode_packet(AVCodecContext *avctx,
void *data, int *data_size, AVPacket* avpkt)
{
WMAProDecodeCtx *s = avctx->priv_data;
GetBitContext* gb = &s->pgb;
const uint8_t* buf = avpkt->data;
int buf_size = avpkt->size;
int more_frames = 1;
GetBitContext* gb = &s->pgb;
const uint8_t* buf = avpkt->data;
int buf_size = avpkt->size;
int more_frames = 1;
int num_bits_prev_frame;
int packet_sequence_number;
s->samples = data;
s->samples = data;
s->samples_start = data;
s->samples_end = (float*)((int8_t*)data + *data_size);
s->samples_end = (float*)((int8_t*)data + *data_size);
*data_size = 0;
if (!s->output_buffer_full) {
s->buf_bit_size = buf_size << 3;
s->buf_bit_size = buf_size << 3;
/** sanity check for the buffer length */
if (buf_size < avctx->block_align)
return 0;
/** sanity check for the buffer length */
if (buf_size < avctx->block_align)
return 0;
buf_size = avctx->block_align;
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);
/** parse packet header */
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);
dprintf(avctx, "packet[%d]: nbpf %x\n", avctx->frame_number,
num_bits_prev_frame);
/** get number of bits that need to be added to the previous frame */
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);
/** check for packet loss */
if (!s->packet_loss &&
((s->packet_sequence_number + 1) & 0xF) != packet_sequence_number) {
s->packet_loss = 1;
av_log(avctx, AV_LOG_ERROR, "Packet loss detected! seq %x vs %x\n",
s->packet_sequence_number, packet_sequence_number);
}
s->packet_sequence_number = packet_sequence_number;
/** check for packet loss */
if (!s->packet_loss &&
((s->packet_sequence_number + 1) & 0xF) != packet_sequence_number) {
s->packet_loss = 1;
av_log(avctx, AV_LOG_ERROR, "Packet loss detected! seq %x vs %x\n",
s->packet_sequence_number, packet_sequence_number);
}
s->packet_sequence_number = packet_sequence_number;
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);
dprintf(avctx, "accumulated %x bits of frame data\n",
s->num_saved_bits - s->frame_offset);
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);
dprintf(avctx, "accumulated %x bits of frame data\n",
s->num_saved_bits - s->frame_offset);
/** decode the cross packet frame if it is valid */
if (!s->packet_loss)
decode_frame(s);
} else if (s->num_saved_bits - s->frame_offset) {
dprintf(avctx, "ignoring %x previously saved bits\n",
s->num_saved_bits - s->frame_offset);
}
/** decode the cross packet frame if it is valid */
if (!s->packet_loss)
decode_frame(s);
} else if (s->num_saved_bits - s->frame_offset) {
dprintf(avctx, "ignoring %x previously saved bits\n",
s->num_saved_bits - s->frame_offset);
}
s->packet_loss = 0;
s->packet_loss = 0;
} else {
/** continue decoding */