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Diffstat (limited to 'chromium/third_party/ffmpeg/libavcodec/dcadec.c')
-rw-r--r--chromium/third_party/ffmpeg/libavcodec/dcadec.c118
1 files changed, 66 insertions, 52 deletions
diff --git a/chromium/third_party/ffmpeg/libavcodec/dcadec.c b/chromium/third_party/ffmpeg/libavcodec/dcadec.c
index cc2fa0af12e..6a9dfa34d43 100644
--- a/chromium/third_party/ffmpeg/libavcodec/dcadec.c
+++ b/chromium/third_party/ffmpeg/libavcodec/dcadec.c
@@ -53,7 +53,6 @@
//#define TRACE
#define DCA_PRIM_CHANNELS_MAX (7)
-#define DCA_SUBBANDS (64)
#define DCA_ABITS_MAX (32) /* Should be 28 */
#define DCA_SUBSUBFRAMES_MAX (4)
#define DCA_SUBFRAMES_MAX (16)
@@ -400,7 +399,7 @@ typedef struct {
int prediction_vq[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]; ///< prediction VQ coefs
int bitalloc[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]; ///< bit allocation index
int transition_mode[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]; ///< transition mode (transients)
- int scale_factor[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS][2]; ///< scale factors (2 if transient)
+ int32_t scale_factor[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS][2];///< scale factors (2 if transient)
int joint_huff[DCA_PRIM_CHANNELS_MAX]; ///< joint subband scale factors codebook
int joint_scale_factor[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]; ///< joint subband scale factors
float downmix_coef[DCA_PRIM_CHANNELS_MAX + 1][2]; ///< stereo downmix coefficients
@@ -413,7 +412,7 @@ typedef struct {
uint8_t core_downmix_amode; ///< audio channel arrangement of embedded downmix
uint16_t core_downmix_codes[DCA_PRIM_CHANNELS_MAX + 1][4]; ///< embedded downmix coefficients (9-bit codes)
- int high_freq_vq[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]; ///< VQ encoded high frequency subbands
+ int32_t high_freq_vq[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]; ///< VQ encoded high frequency subbands
float lfe_data[2 * DCA_LFE_MAX * (DCA_BLOCKS_MAX + 4)]; ///< Low frequency effect data
int lfe_scale_factor;
@@ -1105,7 +1104,7 @@ static void qmf_32_subbands(DCAContext *s, int chans,
static void lfe_interpolation_fir(DCAContext *s, int decimation_select,
int num_deci_sample, float *samples_in,
- float *samples_out, float scale)
+ float *samples_out)
{
/* samples_in: An array holding decimated samples.
* Samples in current subframe starts from samples_in[0],
@@ -1115,23 +1114,23 @@ static void lfe_interpolation_fir(DCAContext *s, int decimation_select,
* samples_out: An array holding interpolated samples
*/
- int decifactor;
+ int idx;
const float *prCoeff;
int deciindex;
/* Select decimation filter */
if (decimation_select == 1) {
- decifactor = 64;
+ idx = 1;
prCoeff = lfe_fir_128;
} else {
- decifactor = 32;
+ idx = 0;
prCoeff = lfe_fir_64;
}
/* Interpolation */
for (deciindex = 0; deciindex < num_deci_sample; deciindex++) {
- s->dcadsp.lfe_fir(samples_out, samples_in, prCoeff, decifactor, scale);
+ s->dcadsp.lfe_fir[idx](samples_out, samples_in, prCoeff);
samples_in++;
- samples_out += 2 * decifactor;
+ samples_out += 2 * 32 * (1 + idx);
}
}
@@ -1246,16 +1245,6 @@ static int decode_blockcodes(int code1, int code2, int levels, int32_t *values)
static const uint8_t abits_sizes[7] = { 7, 10, 12, 13, 15, 17, 19 };
static const uint8_t abits_levels[7] = { 3, 5, 7, 9, 13, 17, 25 };
-#ifndef int8x8_fmul_int32
-static inline void int8x8_fmul_int32(float *dst, const int8_t *src, int scale)
-{
- float fscale = scale / 16.0;
- int i;
- for (i = 0; i < 8; i++)
- dst[i] = src[i] * fscale;
-}
-#endif
-
static int dca_subsubframe(DCAContext *s, int base_channel, int block_index)
{
int k, l;
@@ -1352,16 +1341,27 @@ static int dca_subsubframe(DCAContext *s, int base_channel, int block_index)
*/
if (s->prediction_mode[k][l]) {
int n;
- for (m = 0; m < 8; m++) {
- for (n = 1; n <= 4; n++)
+ if (s->predictor_history)
+ subband_samples[k][l][0] += (adpcm_vb[s->prediction_vq[k][l]][0] *
+ s->subband_samples_hist[k][l][3] +
+ adpcm_vb[s->prediction_vq[k][l]][1] *
+ s->subband_samples_hist[k][l][2] +
+ adpcm_vb[s->prediction_vq[k][l]][2] *
+ s->subband_samples_hist[k][l][1] +
+ adpcm_vb[s->prediction_vq[k][l]][3] *
+ s->subband_samples_hist[k][l][0]) *
+ (1.0f / 8192);
+ for (m = 1; m < 8; m++) {
+ float sum = adpcm_vb[s->prediction_vq[k][l]][0] *
+ subband_samples[k][l][m - 1];
+ for (n = 2; n <= 4; n++)
if (m >= n)
- subband_samples[k][l][m] +=
- (adpcm_vb[s->prediction_vq[k][l]][n - 1] *
- subband_samples[k][l][m - n] / 8192);
+ sum += adpcm_vb[s->prediction_vq[k][l]][n - 1] *
+ subband_samples[k][l][m - n];
else if (s->predictor_history)
- subband_samples[k][l][m] +=
- (adpcm_vb[s->prediction_vq[k][l]][n - 1] *
- s->subband_samples_hist[k][l][m - n + 4] / 8192);
+ sum += adpcm_vb[s->prediction_vq[k][l]][n - 1] *
+ s->subband_samples_hist[k][l][m - n + 4];
+ subband_samples[k][l][m] += sum * (1.0f / 8192);
}
}
}
@@ -1369,20 +1369,16 @@ static int dca_subsubframe(DCAContext *s, int base_channel, int block_index)
/*
* Decode VQ encoded high frequencies
*/
- for (l = s->vq_start_subband[k]; l < s->subband_activity[k]; l++) {
- /* 1 vector -> 32 samples but we only need the 8 samples
- * for this subsubframe. */
- int hfvq = s->high_freq_vq[k][l];
-
- if (!s->debug_flag & 0x01) {
+ if (s->subband_activity[k] > s->vq_start_subband[k]) {
+ if (!(s->debug_flag & 0x01)) {
av_log(s->avctx, AV_LOG_DEBUG,
"Stream with high frequencies VQ coding\n");
s->debug_flag |= 0x01;
}
-
- int8x8_fmul_int32(subband_samples[k][l],
- &high_freq_vq[hfvq][subsubframe * 8],
- s->scale_factor[k][l][0]);
+ s->dcadsp.decode_hf(subband_samples[k], s->high_freq_vq[k],
+ high_freq_vq, subsubframe * 8,
+ s->scale_factor[k], s->vq_start_subband[k],
+ s->subband_activity[k]);
}
}
@@ -1401,9 +1397,7 @@ static int dca_subsubframe(DCAContext *s, int base_channel, int block_index)
/* Backup predictor history for adpcm */
for (k = base_channel; k < s->prim_channels; k++)
for (l = 0; l < s->vq_start_subband[k]; l++)
- memcpy(s->subband_samples_hist[k][l],
- &subband_samples[k][l][4],
- 4 * sizeof(subband_samples[0][0][0]));
+ AV_COPY128(s->subband_samples_hist[k][l], &subband_samples[k][l][4]);
return 0;
}
@@ -1427,8 +1421,7 @@ static int dca_filter_channels(DCAContext *s, int block_index)
if (s->lfe) {
lfe_interpolation_fir(s, s->lfe, 2 * s->lfe,
s->lfe_data + 2 * s->lfe * (block_index + 4),
- s->samples_chanptr[s->lfe_index],
- 1.0 / (256.0 * 32768.0));
+ s->samples_chanptr[s->lfe_index]);
/* Outputs 20bits pcm samples */
}
@@ -2071,6 +2064,8 @@ static void dca_exss_parse_header(DCAContext *s)
}
}
+ av_assert0(num_assets > 0); // silence a warning
+
for (i = 0; i < num_assets; i++)
asset_size[i] = get_bits_long(&s->gb, 16 + 4 * blownup);
@@ -2082,7 +2077,6 @@ static void dca_exss_parse_header(DCAContext *s)
/* not parsed further, we were only interested in the extensions mask
* from the asset header */
- if (num_assets > 0) {
j = get_bits_count(&s->gb);
if (start_posn + hdrsize * 8 > j)
skip_bits_long(&s->gb, start_posn + hdrsize * 8 - j);
@@ -2107,7 +2101,6 @@ static void dca_exss_parse_header(DCAContext *s)
if (start_posn + asset_size[i] * 8 > j)
skip_bits_long(&s->gb, start_posn + asset_size[i] * 8 - j);
}
- }
}
/**
@@ -2149,7 +2142,6 @@ static int dca_decode_frame(AVCodecContext *avctx, void *data,
return AVERROR_INVALIDDATA;
}
- init_get_bits(&s->gb, s->dca_buffer, s->dca_buffer_size * 8);
if ((ret = dca_parse_frame_header(s)) < 0) {
//seems like the frame is corrupt, try with the next one
return ret;
@@ -2180,7 +2172,7 @@ static int dca_decode_frame(AVCodecContext *avctx, void *data,
if (s->core_downmix && (s->core_downmix_amode == DCA_STEREO ||
s->core_downmix_amode == DCA_STEREO_TOTAL)) {
int sign, code;
- for (i = 0; i < s->prim_channels + !!s->lfe; i++) {
+ for (i = 0; i < num_core_channels + !!s->lfe; i++) {
sign = s->core_downmix_codes[i][0] & 0x100 ? 1 : -1;
code = s->core_downmix_codes[i][0] & 0x0FF;
s->downmix_coef[i][0] = (!code ? 0.0f :
@@ -2190,6 +2182,7 @@ static int dca_decode_frame(AVCodecContext *avctx, void *data,
s->downmix_coef[i][1] = (!code ? 0.0f :
sign * dca_dmixtable[code - 1]);
}
+ s->output = s->core_downmix_amode;
} else {
int am = s->amode & DCA_CHANNEL_MASK;
if (am >= FF_ARRAY_ELEMS(dca_default_coeffs)) {
@@ -2197,19 +2190,19 @@ static int dca_decode_frame(AVCodecContext *avctx, void *data,
"Invalid channel mode %d\n", am);
return AVERROR_INVALIDDATA;
}
- if (s->prim_channels + !!s->lfe >
+ if (num_core_channels + !!s->lfe >
FF_ARRAY_ELEMS(dca_default_coeffs[0])) {
avpriv_request_sample(s->avctx, "Downmixing %d channels",
s->prim_channels + !!s->lfe);
return AVERROR_PATCHWELCOME;
}
- for (i = 0; i < s->prim_channels + !!s->lfe; i++) {
+ for (i = 0; i < num_core_channels + !!s->lfe; i++) {
s->downmix_coef[i][0] = dca_default_coeffs[am][i][0];
s->downmix_coef[i][1] = dca_default_coeffs[am][i][1];
}
}
av_dlog(s->avctx, "Stereo downmix coeffs:\n");
- for (i = 0; i < s->prim_channels + !!s->lfe; i++) {
+ for (i = 0; i < num_core_channels + !!s->lfe; i++) {
av_dlog(s->avctx, "L, input channel %d = %f\n", i,
s->downmix_coef[i][0]);
av_dlog(s->avctx, "R, input channel %d = %f\n", i,
@@ -2335,6 +2328,17 @@ static int dca_decode_frame(AVCodecContext *avctx, void *data,
{ /* xxx should also do MA extensions */
if (s->amode < 16) {
avctx->channel_layout = dca_core_channel_layout[s->amode];
+
+ if (s->prim_channels + !!s->lfe > 2 &&
+ avctx->request_channel_layout == AV_CH_LAYOUT_STEREO) {
+ /*
+ * Neither the core's auxiliary data nor our default tables contain
+ * downmix coefficients for the additional channel coded in the XCh
+ * extension, so when we're doing a Stereo downmix, don't decode it.
+ */
+ s->xch_disable = 1;
+ }
+
#if FF_API_REQUEST_CHANNELS
FF_DISABLE_DEPRECATION_WARNINGS
if (s->xch_present && !s->xch_disable &&
@@ -2372,10 +2376,10 @@ FF_ENABLE_DEPRECATION_WARNINGS
return AVERROR_INVALIDDATA;
}
- if (s->prim_channels + !!s->lfe > 2 &&
+ if (num_core_channels + !!s->lfe > 2 &&
avctx->request_channel_layout == AV_CH_LAYOUT_STEREO) {
channels = 2;
- s->output = DCA_STEREO;
+ s->output = s->prim_channels == 2 ? s->amode : DCA_STEREO;
avctx->channel_layout = AV_CH_LAYOUT_STEREO;
}
else if (avctx->request_channel_layout & AV_CH_LAYOUT_NATIVE) {
@@ -2421,7 +2425,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
* masks in some sense -- unfortunately some channels could overlap */
if (av_popcount(channel_mask) != av_popcount(channel_layout)) {
av_log(avctx, AV_LOG_DEBUG,
- "DTS-XXCH: Inconsistant avcodec/dts channel layouts\n");
+ "DTS-XXCH: Inconsistent avcodec/dts channel layouts\n");
return AVERROR_INVALIDDATA;
}
@@ -2439,6 +2443,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
s->xxch_order_tab[j++] = posn;
}
}
+
}
s->lfe_index = av_popcount(channel_layout & (AV_CH_LOW_FREQUENCY-1));
@@ -2559,6 +2564,15 @@ FF_ENABLE_DEPRECATION_WARNINGS
for (i = 0; i < 2 * s->lfe * 4; i++)
s->lfe_data[i] = s->lfe_data[i + lfe_samples];
+ /* AVMatrixEncoding
+ *
+ * DCA_STEREO_TOTAL (Lt/Rt) is equivalent to Dolby Surround */
+ ret = ff_side_data_update_matrix_encoding(frame,
+ (s->output & ~DCA_LFE) == DCA_STEREO_TOTAL ?
+ AV_MATRIX_ENCODING_DOLBY : AV_MATRIX_ENCODING_NONE);
+ if (ret < 0)
+ return ret;
+
*got_frame_ptr = 1;
return buf_size;
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-07 11:39:59 +0000