diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/libxineadec/adpcm.c | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/src/libxineadec/adpcm.c b/src/libxineadec/adpcm.c index e08507a95..f7785274d 100644 --- a/src/libxineadec/adpcm.c +++ b/src/libxineadec/adpcm.c @@ -24,7 +24,7 @@ * formats can be found here: * http://www.pcisys.net/~melanson/codecs/ * - * $Id: adpcm.c,v 1.4 2002/06/08 19:45:19 tmmm Exp $ + * $Id: adpcm.c,v 1.5 2002/06/10 06:27:40 tmmm Exp $ */ #include <stdio.h> @@ -196,7 +196,7 @@ static void dk3_adpcm_decode_block(adpcm_decoder_t *this, buf_element_t *buf) { int sum_index; int diff_index; int diff_channel; - int out_ptr = 0; + int out_ptr; unsigned char last_byte = 0; unsigned char nibble; @@ -226,7 +226,10 @@ static void dk3_adpcm_decode_block(adpcm_decoder_t *this, buf_element_t *buf) { sum_index = this->buf[i + 14]; diff_index = this->buf[i + 15]; - j = i + DK3_ADPCM_PREAMBLE_SIZE; + j = DK3_ADPCM_PREAMBLE_SIZE; /* start past the preamble */ + out_ptr = 0; + last_byte = 0; + decode_top_nibble_next = 0; while (j < this->in_block_size) { // process the first predictor of the sum channel @@ -317,7 +320,7 @@ static void dk3_adpcm_decode_block(adpcm_decoder_t *this, buf_element_t *buf) { return; } - /* out_ptr and j are samples counts, mem_size is a byte count */ + /* out_ptr and j are sample counts, mem_size is a byte count */ if (((out_ptr - j) * 2) > audio_buffer->mem_size) bytes_to_send = audio_buffer->mem_size; else @@ -362,6 +365,8 @@ static void dk4_adpcm_decode_block(adpcm_decoder_t *this, buf_element_t *buf) { /* iterate through each block in the in buffer */ for (i = 0; i < this->size; i += this->in_block_size) { + out_ptr = 0; + /* the first predictor value goes straight to the output */ predictor_l = this->decode_buffer[0] = LE_16(&this->buf[i + 0]); SE_16BIT(predictor_l); @@ -396,7 +401,7 @@ static void dk4_adpcm_decode_block(adpcm_decoder_t *this, buf_element_t *buf) { return; } - /* out_ptr and j are samples counts, mem_size is a byte count */ + /* out_ptr and j are sample counts, mem_size is a byte count */ if (((out_ptr - j) * 2) > audio_buffer->mem_size) bytes_to_send = audio_buffer->mem_size; else @@ -446,6 +451,8 @@ static void ms_ima_adpcm_decode_block(adpcm_decoder_t *this, /* iterate through each block in the in buffer */ for (i = 0; i < this->size; i += this->in_block_size) { + out_ptr = 0; + /* initialize algorithm for this block */ predictor_l = LE_16(&this->buf[i + 0]); SE_16BIT(predictor_l); @@ -507,7 +514,7 @@ static void ms_ima_adpcm_decode_block(adpcm_decoder_t *this, return; } - /* out_ptr and j are samples counts, mem_size is a byte count */ + /* out_ptr and j are sample counts, mem_size is a byte count */ if (((out_ptr - j) * 2) > audio_buffer->mem_size) bytes_to_send = audio_buffer->mem_size; else @@ -665,6 +672,9 @@ static void ms_adpcm_decode_block(adpcm_decoder_t *this, buf_element_t *buf) { // fetch the header information, in stereo if both channels are present j = i; + upper_nibble = 1; + current_channel = 0; + out_ptr = 0; if (this->buf[j] > 6) printf( "MS ADPCM: coefficient (%d) out of range (should be [0..6])\n", @@ -746,7 +756,7 @@ static void ms_adpcm_decode_block(adpcm_decoder_t *this, buf_element_t *buf) { return; } - /* out_ptr and j are samples counts, mem_size is a byte count */ + /* out_ptr and j are sample counts, mem_size is a byte count */ if (((out_ptr - j) * 2) > audio_buffer->mem_size) bytes_to_send = audio_buffer->mem_size; else |