[FFmpeg-devel] [PATCH 30/41] avcodec/adpcm: Disable dead code
Andreas Rheinhardt
andreas.rheinhardt at outlook.com
Thu Jun 17 05:31:51 EEST 2021
This change ensures that the linker can drop adpcm_data.o if no decoder
that actually uses anything from there is enabled.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>
---
libavcodec/adpcm.c | 212 +++++++++++++++++++++++----------------------
1 file changed, 108 insertions(+), 104 deletions(-)
diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c
index 15aea639dc..171b059409 100644
--- a/libavcodec/adpcm.c
+++ b/libavcodec/adpcm.c
@@ -61,6 +61,18 @@
* readstr http://www.geocities.co.jp/Playtown/2004/
*/
+#define CASE_0(codec_id, ...)
+#define CASE_1(codec_id, ...) \
+ case codec_id: \
+ { __VA_ARGS__ } \
+ break;
+#define CASE_2(enabled, codec_id, ...) \
+ CASE_ ## enabled(codec_id, __VA_ARGS__)
+#define CASE_3(config, codec_id, ...) \
+ CASE_2(config, codec_id, __VA_ARGS__)
+#define CASE(codec, ...) \
+ CASE_3(CONFIG_ ## codec ## _DECODER, AV_CODEC_ID_ ## codec, __VA_ARGS__)
+
/* These are for CD-ROM XA ADPCM */
static const int8_t xa_adpcm_table[5][2] = {
{ 0, 0 },
@@ -821,8 +833,7 @@ static int get_nb_samples(AVCodecContext *avctx, GetByteContext *gb,
buf_size = FFMIN(buf_size, avctx->block_align);
nb_samples = (buf_size - 4 * ch) * 2 / ch;
break;
- case AV_CODEC_ID_ADPCM_IMA_WAV:
- {
+ CASE(ADPCM_IMA_WAV,
int bsize = ff_adpcm_ima_block_sizes[avctx->bits_per_coded_sample - 2];
int bsamples = ff_adpcm_ima_block_samples[avctx->bits_per_coded_sample - 2];
if (avctx->block_align > 0)
@@ -830,8 +841,7 @@ static int get_nb_samples(AVCodecContext *avctx, GetByteContext *gb,
if (buf_size < 4 * ch)
return AVERROR_INVALIDDATA;
nb_samples = 1 + (buf_size - 4 * ch) / (bsize * ch) * bsamples;
- break;
- }
+ ) /* End of CASE */
case AV_CODEC_ID_ADPCM_MS:
if (avctx->block_align > 0)
buf_size = FFMIN(buf_size, avctx->block_align);
@@ -955,7 +965,7 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
st = avctx->channels == 2 ? 1 : 0;
switch(avctx->codec->id) {
- case AV_CODEC_ID_ADPCM_IMA_QT:
+ CASE(ADPCM_IMA_QT,
/* In QuickTime, IMA is encoded by chunks of 34 bytes (=64 samples).
Channel data is interleaved per-chunk. */
for (int channel = 0; channel < avctx->channels; channel++) {
@@ -995,8 +1005,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
samples[m + 1] = adpcm_ima_qt_expand_nibble(cs, byte >> 4 );
}
}
- break;
- case AV_CODEC_ID_ADPCM_IMA_WAV:
+ ) /* End of CASE */
+ CASE(ADPCM_IMA_WAV,
for (int i = 0; i < avctx->channels; i++) {
ADPCMChannelStatus *cs = &(c->status[i]);
cs->predictor = samples_p[i][0] = sign_extend(bytestream2_get_le16u(&gb), 16);
@@ -1046,8 +1056,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
}
}
}
- break;
- case AV_CODEC_ID_ADPCM_4XM:
+ ) /* End of CASE */
+ CASE(ADPCM_4XM,
for (int i = 0; i < avctx->channels; i++)
c->status[i].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
@@ -1069,8 +1079,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
*samples++ = adpcm_ima_expand_nibble(cs, v >> 4 , 4);
}
}
- break;
- case AV_CODEC_ID_ADPCM_AGM:
+ ) /* End of CASE */
+ CASE(ADPCM_AGM,
for (int i = 0; i < avctx->channels; i++)
c->status[i].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
for (int i = 0; i < avctx->channels; i++)
@@ -1081,9 +1091,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
*samples++ = adpcm_agm_expand_nibble(&c->status[0], v & 0xF);
*samples++ = adpcm_agm_expand_nibble(&c->status[st], v >> 4 );
}
- break;
- case AV_CODEC_ID_ADPCM_MS:
- {
+ ) /* End of CASE */
+ CASE(ADPCM_MS,
int block_predictor;
if (avctx->channels > 2) {
@@ -1147,9 +1156,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
*samples++ = adpcm_ms_expand_nibble(&c->status[st], byte & 0x0F);
}
}
- break;
- }
- case AV_CODEC_ID_ADPCM_MTAF:
+ ) /* End of CASE */
+ CASE(ADPCM_MTAF,
for (int channel = 0; channel < avctx->channels; channel += 2) {
bytestream2_skipu(&gb, 4);
c->status[channel ].step = bytestream2_get_le16u(&gb) & 0x1f;
@@ -1169,8 +1177,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
samples_p[channel + 1][n + 1] = adpcm_mtaf_expand_nibble(&c->status[channel + 1], v >> 4 );
}
}
- break;
- case AV_CODEC_ID_ADPCM_IMA_DK4:
+ ) /* End of CASE */
+ CASE(ADPCM_IMA_DK4,
for (int channel = 0; channel < avctx->channels; channel++) {
ADPCMChannelStatus *cs = &c->status[channel];
cs->predictor = *samples++ = sign_extend(bytestream2_get_le16u(&gb), 16);
@@ -1186,9 +1194,19 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
*samples++ = adpcm_ima_expand_nibble(&c->status[0 ], v >> 4 , 3);
*samples++ = adpcm_ima_expand_nibble(&c->status[st], v & 0x0F, 3);
}
- break;
- case AV_CODEC_ID_ADPCM_IMA_DK3:
- {
+ ) /* End of CASE */
+
+ /* DK3 ADPCM support macro */
+#define DK3_GET_NEXT_NIBBLE() \
+ if (decode_top_nibble_next) { \
+ nibble = last_byte >> 4; \
+ decode_top_nibble_next = 0; \
+ } else { \
+ last_byte = bytestream2_get_byteu(&gb); \
+ nibble = last_byte & 0x0F; \
+ decode_top_nibble_next = 1; \
+ }
+ CASE(ADPCM_IMA_DK3,
int last_byte = 0;
int nibble;
int decode_top_nibble_next = 0;
@@ -1208,17 +1226,6 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
/* sign extend the predictors */
diff_channel = c->status[1].predictor;
- /* DK3 ADPCM support macro */
-#define DK3_GET_NEXT_NIBBLE() \
- if (decode_top_nibble_next) { \
- nibble = last_byte >> 4; \
- decode_top_nibble_next = 0; \
- } else { \
- last_byte = bytestream2_get_byteu(&gb); \
- nibble = last_byte & 0x0F; \
- decode_top_nibble_next = 1; \
- }
-
while (samples < samples_end) {
/* for this algorithm, c->status[0] is the sum channel and
@@ -1249,9 +1256,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
if ((bytestream2_tell(&gb) & 1))
bytestream2_skip(&gb, 1);
- break;
- }
- case AV_CODEC_ID_ADPCM_IMA_ISS:
+ ) /* End of CASE */
+ CASE(ADPCM_IMA_ISS,
for (int channel = 0; channel < avctx->channels; channel++) {
ADPCMChannelStatus *cs = &c->status[channel];
cs->predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
@@ -1277,8 +1283,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
*samples++ = adpcm_ima_expand_nibble(&c->status[0 ], v1, 3);
*samples++ = adpcm_ima_expand_nibble(&c->status[st], v2, 3);
}
- break;
- case AV_CODEC_ID_ADPCM_IMA_MOFLEX:
+ ) /* End of CASE */
+ CASE(ADPCM_IMA_MOFLEX,
for (int channel = 0; channel < avctx->channels; channel++) {
ADPCMChannelStatus *cs = &c->status[channel];
cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
@@ -1300,8 +1306,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
}
}
}
- break;
- case AV_CODEC_ID_ADPCM_IMA_DAT4:
+ ) /* End of CASE */
+ CASE(ADPCM_IMA_DAT4,
for (int channel = 0; channel < avctx->channels; channel++) {
ADPCMChannelStatus *cs = &c->status[channel];
samples = samples_p[channel];
@@ -1312,22 +1318,22 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
*samples++ = adpcm_ima_expand_nibble(cs, v & 0x0F, 3);
}
}
- break;
- case AV_CODEC_ID_ADPCM_IMA_APC:
+ ) /* End of CASE */
+ CASE(ADPCM_IMA_APC,
for (int n = nb_samples >> (1 - st); n > 0; n--) {
int v = bytestream2_get_byteu(&gb);
*samples++ = adpcm_ima_expand_nibble(&c->status[0], v >> 4 , 3);
*samples++ = adpcm_ima_expand_nibble(&c->status[st], v & 0x0F, 3);
}
- break;
- case AV_CODEC_ID_ADPCM_IMA_SSI:
+ ) /* End of CASE */
+ CASE(ADPCM_IMA_SSI,
for (int n = nb_samples >> (1 - st); n > 0; n--) {
int v = bytestream2_get_byteu(&gb);
*samples++ = adpcm_ima_qt_expand_nibble(&c->status[0], v >> 4 );
*samples++ = adpcm_ima_qt_expand_nibble(&c->status[st], v & 0x0F);
}
- break;
- case AV_CODEC_ID_ADPCM_IMA_APM:
+ ) /* End of CASE */
+ CASE(ADPCM_IMA_APM,
for (int n = nb_samples / 2; n > 0; n--) {
for (int channel = 0; channel < avctx->channels; channel++) {
int v = bytestream2_get_byteu(&gb);
@@ -1336,8 +1342,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
}
samples += avctx->channels;
}
- break;
- case AV_CODEC_ID_ADPCM_IMA_ALP:
+ ) /* End of CASE */
+ CASE(ADPCM_IMA_ALP,
for (int n = nb_samples / 2; n > 0; n--) {
for (int channel = 0; channel < avctx->channels; channel++) {
int v = bytestream2_get_byteu(&gb);
@@ -1346,8 +1352,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
}
samples += avctx->channels;
}
- break;
- case AV_CODEC_ID_ADPCM_IMA_CUNNING:
+ ) /* End of CASE */
+ CASE(ADPCM_IMA_CUNNING,
for (int channel = 0; channel < avctx->channels; channel++) {
int16_t *smp = samples_p[channel];
for (int n = 0; n < nb_samples / 2; n++) {
@@ -1356,15 +1362,15 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
*smp++ = adpcm_ima_cunning_expand_nibble(&c->status[channel], v >> 4);
}
}
- break;
- case AV_CODEC_ID_ADPCM_IMA_OKI:
+ ) /* End of CASE */
+ CASE(ADPCM_IMA_OKI,
for (int n = nb_samples >> (1 - st); n > 0; n--) {
int v = bytestream2_get_byteu(&gb);
*samples++ = adpcm_ima_oki_expand_nibble(&c->status[0], v >> 4 );
*samples++ = adpcm_ima_oki_expand_nibble(&c->status[st], v & 0x0F);
}
- break;
- case AV_CODEC_ID_ADPCM_IMA_RAD:
+ ) /* End of CASE */
+ CASE(ADPCM_IMA_RAD,
for (int channel = 0; channel < avctx->channels; channel++) {
ADPCMChannelStatus *cs = &c->status[channel];
cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
@@ -1388,8 +1394,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
*samples++ = adpcm_ima_expand_nibble(&c->status[channel], byte[channel] >> 4 , 3);
}
}
- break;
- case AV_CODEC_ID_ADPCM_IMA_WS:
+ ) /* End of CASE */
+ CASE(ADPCM_IMA_WS,
if (c->vqa_version == 3) {
for (int channel = 0; channel < avctx->channels; channel++) {
int16_t *smp = samples_p[channel];
@@ -1411,9 +1417,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
}
}
bytestream2_seek(&gb, 0, SEEK_END);
- break;
- case AV_CODEC_ID_ADPCM_XA:
- {
+ ) /* End of CASE */
+ CASE(ADPCM_XA,
int16_t *out0 = samples_p[0];
int16_t *out1 = samples_p[1];
int samples_per_block = 28 * (3 - avctx->channels) * 4;
@@ -1433,9 +1438,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
if (bytes_remaining > 0) {
bytestream2_skip(&gb, bytes_remaining);
}
- break;
- }
- case AV_CODEC_ID_ADPCM_IMA_EA_EACS:
+ ) /* End of CASE */
+ CASE(ADPCM_IMA_EA_EACS,
for (int i = 0; i <= st; i++) {
c->status[i].step_index = bytestream2_get_le32u(&gb);
if (c->status[i].step_index > 88u) {
@@ -1455,16 +1459,15 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
*samples++ = adpcm_ima_expand_nibble(&c->status[0], byte >> 4, 3);
*samples++ = adpcm_ima_expand_nibble(&c->status[st], byte & 0x0F, 3);
}
- break;
- case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
+ ) /* End of CASE */
+ CASE(ADPCM_IMA_EA_SEAD,
for (int n = nb_samples >> (1 - st); n > 0; n--) {
int byte = bytestream2_get_byteu(&gb);
*samples++ = adpcm_ima_expand_nibble(&c->status[0], byte >> 4, 6);
*samples++ = adpcm_ima_expand_nibble(&c->status[st], byte & 0x0F, 6);
}
- break;
- case AV_CODEC_ID_ADPCM_EA:
- {
+ ) /* End of CASE */
+ CASE(ADPCM_EA,
int previous_left_sample, previous_right_sample;
int current_left_sample, current_right_sample;
int next_left_sample, next_right_sample;
@@ -1515,11 +1518,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
}
bytestream2_skip(&gb, 2); // Skip terminating 0x0000
-
- break;
- }
- case AV_CODEC_ID_ADPCM_EA_MAXIS_XA:
- {
+ ) /* End of CASE */
+ CASE(ADPCM_EA_MAXIS_XA,
int coeff[2][2], shift[2];
for (int channel = 0; channel < avctx->channels; channel++) {
@@ -1546,8 +1546,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
}
}
bytestream2_seek(&gb, 0, SEEK_END);
- break;
- }
+ ) /* End of CASE */
+#if CONFIG_ADPCM_EA_R1_DECODER || CONFIG_ADPCM_EA_R2_DECODER || CONFIG_ADPCM_EA_R3_DECODER
case AV_CODEC_ID_ADPCM_EA_R1:
case AV_CODEC_ID_ADPCM_EA_R2:
case AV_CODEC_ID_ADPCM_EA_R3: {
@@ -1630,7 +1630,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
bytestream2_seek(&gb, 0, SEEK_END);
break;
}
- case AV_CODEC_ID_ADPCM_EA_XAS:
+#endif /* CONFIG_ADPCM_EA_Rx_DECODER */
+ CASE(ADPCM_EA_XAS,
for (int channel=0; channel < avctx->channels; channel++) {
int coeff[2][4], shift[4];
int16_t *s = samples_p[channel];
@@ -1661,8 +1662,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
}
}
}
- break;
- case AV_CODEC_ID_ADPCM_IMA_ACORN:
+ ) /* End of CASE */
+ CASE(ADPCM_IMA_ACORN,
for (int channel = 0; channel < avctx->channels; channel++) {
ADPCMChannelStatus *cs = &c->status[channel];
cs->predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
@@ -1678,8 +1679,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
*samples++ = adpcm_ima_expand_nibble(&c->status[0], byte & 0x0F, 3);
*samples++ = adpcm_ima_expand_nibble(&c->status[st], byte >> 4, 3);
}
- break;
- case AV_CODEC_ID_ADPCM_IMA_AMV:
+ ) /* End of CASE */
+ CASE(ADPCM_IMA_AMV,
av_assert0(avctx->channels == 1);
/*
@@ -1718,8 +1719,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
av_log(avctx, AV_LOG_WARNING, "Sample will be skipped.\n");
}
}
- break;
- case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
+ ) /* End of CASE */
+ CASE(ADPCM_IMA_SMJPEG,
for (int i = 0; i < avctx->channels; i++) {
c->status[i].predictor = sign_extend(bytestream2_get_be16u(&gb), 16);
c->status[i].step_index = bytestream2_get_byteu(&gb);
@@ -1737,14 +1738,16 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
*samples++ = adpcm_ima_qt_expand_nibble(&c->status[0 ], v >> 4 );
*samples++ = adpcm_ima_qt_expand_nibble(&c->status[st], v & 0xf);
}
- break;
- case AV_CODEC_ID_ADPCM_CT:
+ ) /* End of CASE */
+ CASE(ADPCM_CT,
for (int n = nb_samples >> (1 - st); n > 0; n--) {
int v = bytestream2_get_byteu(&gb);
*samples++ = adpcm_ct_expand_nibble(&c->status[0 ], v >> 4 );
*samples++ = adpcm_ct_expand_nibble(&c->status[st], v & 0x0F);
}
- break;
+ ) /* End of CASE */
+#if CONFIG_ADPCM_SBPRO_2_DECODER || CONFIG_ADPCMSBPRO_3_DECODER || \
+ CONFIG_ADPCM_SBPRO_4_DECODER
case AV_CODEC_ID_ADPCM_SBPRO_4:
case AV_CODEC_ID_ADPCM_SBPRO_3:
case AV_CODEC_ID_ADPCM_SBPRO_2:
@@ -1788,18 +1791,19 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
}
}
break;
- case AV_CODEC_ID_ADPCM_SWF:
+#endif /* CONFIG_ADPCM_SBPRO_x_DECODER */
+ CASE(ADPCM_SWF,
adpcm_swf_decode(avctx, buf, buf_size, samples);
bytestream2_seek(&gb, 0, SEEK_END);
- break;
- case AV_CODEC_ID_ADPCM_YAMAHA:
+ ) /* End of CASE */
+ CASE(ADPCM_YAMAHA,
for (int n = nb_samples >> (1 - st); n > 0; n--) {
int v = bytestream2_get_byteu(&gb);
*samples++ = adpcm_yamaha_expand_nibble(&c->status[0 ], v & 0x0F);
*samples++ = adpcm_yamaha_expand_nibble(&c->status[st], v >> 4 );
}
- break;
- case AV_CODEC_ID_ADPCM_AICA:
+ ) /* End of CASE */
+ CASE(ADPCM_AICA,
for (int channel = 0; channel < avctx->channels; channel++) {
samples = samples_p[channel];
for (int n = nb_samples >> 1; n > 0; n--) {
@@ -1808,9 +1812,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
*samples++ = adpcm_yamaha_expand_nibble(&c->status[channel], v >> 4 );
}
}
- break;
- case AV_CODEC_ID_ADPCM_AFC:
- {
+ ) /* End of CASE */
+ CASE(ADPCM_AFC,
int samples_per_block;
int blocks;
@@ -1860,8 +1863,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
}
}
bytestream2_seek(&gb, 0, SEEK_END);
- break;
- }
+ ) /* End of CASE */
+#if CONFIG_ADPCM_THP_DECODER || CONFIG_ADPCM_THP_LE_DECODER
case AV_CODEC_ID_ADPCM_THP:
case AV_CODEC_ID_ADPCM_THP_LE:
{
@@ -1933,7 +1936,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
}
break;
}
- case AV_CODEC_ID_ADPCM_DTK:
+#endif /* CONFIG_ADPCM_THP(_LE)_DECODER */
+ CASE(ADPCM_DTK,
for (int channel = 0; channel < avctx->channels; channel++) {
samples = samples_p[channel];
@@ -1980,8 +1984,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
if (!channel)
bytestream2_seek(&gb, 0, SEEK_SET);
}
- break;
- case AV_CODEC_ID_ADPCM_PSX:
+ ) /* End of CASE */
+ CASE(ADPCM_PSX,
for (int block = 0; block < avpkt->size / FFMAX(avctx->block_align, 16 * avctx->channels); block++) {
int nb_samples_per_block = 28 * FFMAX(avctx->block_align, 16 * avctx->channels) / (16 * avctx->channels);
for (int channel = 0; channel < avctx->channels; channel++) {
@@ -2021,8 +2025,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
}
}
}
- break;
- case AV_CODEC_ID_ADPCM_ARGO:
+ ) /* End of CASE */
+ CASE(ADPCM_ARGO,
/*
* The format of each block:
* uint8_t left_control;
@@ -2058,14 +2062,14 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
}
}
}
- break;
- case AV_CODEC_ID_ADPCM_ZORK:
+ ) /* End of CASE */
+ CASE(ADPCM_ZORK,
for (int n = 0; n < nb_samples * avctx->channels; n++) {
int v = bytestream2_get_byteu(&gb);
*samples++ = adpcm_zork_expand_nibble(&c->status[n % avctx->channels], v);
}
- break;
- case AV_CODEC_ID_ADPCM_IMA_MTF:
+ ) /* End of CASE */
+ CASE(ADPCM_IMA_MTF,
for (int n = nb_samples / 2; n > 0; n--) {
for (int channel = 0; channel < avctx->channels; channel++) {
int v = bytestream2_get_byteu(&gb);
@@ -2074,7 +2078,7 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
}
samples += avctx->channels;
}
- break;
+ ) /* End of CASE */
default:
av_assert0(0); // unsupported codec_id should not happen
}
--
2.27.0
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