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authorJustin Ruggles <justin.ruggles@gmail.com>2007-12-09 03:27:14 +0000
committerJustin Ruggles <justin.ruggles@gmail.com>2007-12-09 03:27:14 +0000
commite59cc205931dc37fa919490f0ee05e3558b1adf9 (patch)
treecc6a2cbd8e1f5acc38db81f89d3b933fa608b043 /libavcodec/ac3enc.c
parent8001d9234557beed4d34158949f039fcb481ba7f (diff)
downloadffmpeg-e59cc205931dc37fa919490f0ee05e3558b1adf9.tar.gz
cosmetics: rename common ac3 variables
Originally committed as revision 11196 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/ac3enc.c')
-rw-r--r--libavcodec/ac3enc.c42
1 files changed, 21 insertions, 21 deletions
diff --git a/libavcodec/ac3enc.c b/libavcodec/ac3enc.c
index 07fc12c45c..9d80a337e5 100644
--- a/libavcodec/ac3enc.c
+++ b/libavcodec/ac3enc.c
@@ -37,17 +37,17 @@ typedef struct AC3EncodeContext {
int lfe_channel;
int bit_rate;
unsigned int sample_rate;
- unsigned int bsid;
+ unsigned int bitstream_id;
unsigned int frame_size_min; /* minimum frame size in case rounding is necessary */
unsigned int frame_size; /* current frame size in words */
unsigned int bits_written;
unsigned int samples_written;
int sr_shift;
- unsigned int frmsizecod;
+ unsigned int frame_size_code;
unsigned int sr_code; /* frequency */
- unsigned int acmod;
+ unsigned int channel_mode;
int lfe;
- unsigned int bsmod;
+ unsigned int bitstream_mode;
short last_samples[AC3_MAX_CHANNELS][256];
unsigned int chbwcod[AC3_MAX_CHANNELS];
int nb_coefs[AC3_MAX_CHANNELS];
@@ -527,14 +527,14 @@ static int compute_bit_allocation(AC3EncodeContext *s,
/* header size */
frame_bits += 65;
- // if (s->acmod == 2)
+ // if (s->channel_mode == 2)
// frame_bits += 2;
- frame_bits += frame_bits_inc[s->acmod];
+ frame_bits += frame_bits_inc[s->channel_mode];
/* audio blocks */
for(i=0;i<NB_BLOCKS;i++) {
frame_bits += s->nb_channels * 2 + 2; /* blksw * c, dithflag * c, dynrnge, cplstre */
- if (s->acmod == AC3_ACMOD_STEREO) {
+ if (s->channel_mode == AC3_CHMODE_STEREO) {
frame_bits++; /* rematstr */
if(i==0) frame_bits += 4;
}
@@ -632,7 +632,7 @@ static int AC3_encode_init(AVCodecContext *avctx)
AC3EncodeContext *s = avctx->priv_data;
int i, j, ch;
float alpha;
- static const uint8_t acmod_defs[6] = {
+ static const uint8_t channel_mode_defs[6] = {
0x01, /* C */
0x02, /* L R */
0x03, /* L C R */
@@ -648,7 +648,7 @@ static int AC3_encode_init(AVCodecContext *avctx)
/* number of channels */
if (channels < 1 || channels > 6)
return -1;
- s->acmod = acmod_defs[channels - 1];
+ s->channel_mode = channel_mode_defs[channels - 1];
s->lfe = (channels == 6) ? 1 : 0;
s->nb_all_channels = channels;
s->nb_channels = channels > 5 ? 5 : channels;
@@ -665,8 +665,8 @@ static int AC3_encode_init(AVCodecContext *avctx)
s->sample_rate = freq;
s->sr_shift = i;
s->sr_code = j;
- s->bsid = 8 + s->sr_shift;
- s->bsmod = 0; /* complete main audio service */
+ s->bitstream_id = 8 + s->sr_shift;
+ s->bitstream_mode = 0; /* complete main audio service */
/* bitrate & frame size */
bitrate /= 1000;
@@ -677,8 +677,8 @@ static int AC3_encode_init(AVCodecContext *avctx)
if (i == 19)
return -1;
s->bit_rate = bitrate;
- s->frmsizecod = i << 1;
- s->frame_size_min = ff_ac3_frame_size_tab[s->frmsizecod][s->sr_code];
+ s->frame_size_code = i << 1;
+ s->frame_size_min = ff_ac3_frame_size_tab[s->frame_size_code][s->sr_code];
s->bits_written = 0;
s->samples_written = 0;
s->frame_size = s->frame_size_min;
@@ -719,15 +719,15 @@ static void output_frame_header(AC3EncodeContext *s, unsigned char *frame)
put_bits(&s->pb, 16, 0x0b77); /* frame header */
put_bits(&s->pb, 16, 0); /* crc1: will be filled later */
put_bits(&s->pb, 2, s->sr_code);
- put_bits(&s->pb, 6, s->frmsizecod + (s->frame_size - s->frame_size_min));
- put_bits(&s->pb, 5, s->bsid);
- put_bits(&s->pb, 3, s->bsmod);
- put_bits(&s->pb, 3, s->acmod);
- if ((s->acmod & 0x01) && s->acmod != AC3_ACMOD_MONO)
+ put_bits(&s->pb, 6, s->frame_size_code + (s->frame_size - s->frame_size_min));
+ put_bits(&s->pb, 5, s->bitstream_id);
+ put_bits(&s->pb, 3, s->bitstream_mode);
+ put_bits(&s->pb, 3, s->channel_mode);
+ if ((s->channel_mode & 0x01) && s->channel_mode != AC3_CHMODE_MONO)
put_bits(&s->pb, 2, 1); /* XXX -4.5 dB */
- if (s->acmod & 0x04)
+ if (s->channel_mode & 0x04)
put_bits(&s->pb, 2, 1); /* XXX -6 dB */
- if (s->acmod == AC3_ACMOD_STEREO)
+ if (s->channel_mode == AC3_CHMODE_STEREO)
put_bits(&s->pb, 2, 0); /* surround not indicated */
put_bits(&s->pb, 1, s->lfe); /* LFE */
put_bits(&s->pb, 5, 31); /* dialog norm: -31 db */
@@ -810,7 +810,7 @@ static void output_audio_block(AC3EncodeContext *s,
put_bits(&s->pb, 1, 0); /* no new coupling strategy */
}
- if (s->acmod == AC3_ACMOD_STEREO)
+ if (s->channel_mode == AC3_CHMODE_STEREO)
{
if(block_num==0)
{