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Diffstat (limited to 'src/libffmpeg/libavcodec/pcm.c')
-rw-r--r--src/libffmpeg/libavcodec/pcm.c152
1 files changed, 152 insertions, 0 deletions
diff --git a/src/libffmpeg/libavcodec/pcm.c b/src/libffmpeg/libavcodec/pcm.c
index 8e57d11a1..e3a81a590 100644
--- a/src/libffmpeg/libavcodec/pcm.c
+++ b/src/libffmpeg/libavcodec/pcm.c
@@ -23,6 +23,7 @@
*/
#include "avcodec.h"
+#include "bitstream.h" // for ff_reverse
/* from g711.c by SUN microsystems (unrestricted use) */
@@ -128,6 +129,19 @@ static int pcm_encode_init(AVCodecContext *avctx)
}
switch(avctx->codec->id) {
+ case CODEC_ID_PCM_S32LE:
+ case CODEC_ID_PCM_S32BE:
+ case CODEC_ID_PCM_U32LE:
+ case CODEC_ID_PCM_U32BE:
+ avctx->block_align = 4 * avctx->channels;
+ break;
+ case CODEC_ID_PCM_S24LE:
+ case CODEC_ID_PCM_S24BE:
+ case CODEC_ID_PCM_U24LE:
+ case CODEC_ID_PCM_U24BE:
+ case CODEC_ID_PCM_S24DAUD:
+ avctx->block_align = 3 * avctx->channels;
+ break;
case CODEC_ID_PCM_S16LE:
case CODEC_ID_PCM_S16BE:
case CODEC_ID_PCM_U16LE:
@@ -170,6 +184,30 @@ static int pcm_encode_close(AVCodecContext *avctx)
return 0;
}
+/**
+ * \brief convert samples from 16 bit
+ * \param bps byte per sample for the destination format, must be >= 2
+ * \param le 0 for big-, 1 for little-endian
+ * \param us 0 for signed, 1 for unsigned output
+ * \param samples input samples
+ * \param dst output samples
+ * \param n number of samples in samples buffer.
+ */
+static inline void encode_from16(int bps, int le, int us,
+ short **samples, uint8_t **dst, int n) {
+ if (bps > 2)
+ memset(*dst, 0, n * bps);
+ if (le) *dst += bps - 2;
+ for(;n>0;n--) {
+ register int v = *(*samples)++;
+ if (us) v += 0x8000;
+ (*dst)[le] = v >> 8;
+ (*dst)[1 - le] = v;
+ *dst += bps;
+ }
+ if (le) *dst -= bps - 2;
+}
+
static int pcm_encode_frame(AVCodecContext *avctx,
unsigned char *frame, int buf_size, void *data)
{
@@ -178,6 +216,19 @@ static int pcm_encode_frame(AVCodecContext *avctx,
unsigned char *dst;
switch(avctx->codec->id) {
+ case CODEC_ID_PCM_S32LE:
+ case CODEC_ID_PCM_S32BE:
+ case CODEC_ID_PCM_U32LE:
+ case CODEC_ID_PCM_U32BE:
+ sample_size = 4;
+ break;
+ case CODEC_ID_PCM_S24LE:
+ case CODEC_ID_PCM_S24BE:
+ case CODEC_ID_PCM_U24LE:
+ case CODEC_ID_PCM_U24BE:
+ case CODEC_ID_PCM_S24DAUD:
+ sample_size = 3;
+ break;
case CODEC_ID_PCM_S16LE:
case CODEC_ID_PCM_S16BE:
case CODEC_ID_PCM_U16LE:
@@ -193,6 +244,43 @@ static int pcm_encode_frame(AVCodecContext *avctx,
dst = frame;
switch(avctx->codec->id) {
+ case CODEC_ID_PCM_S32LE:
+ encode_from16(4, 1, 0, &samples, &dst, n);
+ break;
+ case CODEC_ID_PCM_S32BE:
+ encode_from16(4, 0, 0, &samples, &dst, n);
+ break;
+ case CODEC_ID_PCM_U32LE:
+ encode_from16(4, 1, 1, &samples, &dst, n);
+ break;
+ case CODEC_ID_PCM_U32BE:
+ encode_from16(4, 0, 1, &samples, &dst, n);
+ break;
+ case CODEC_ID_PCM_S24LE:
+ encode_from16(3, 1, 0, &samples, &dst, n);
+ break;
+ case CODEC_ID_PCM_S24BE:
+ encode_from16(3, 0, 0, &samples, &dst, n);
+ break;
+ case CODEC_ID_PCM_U24LE:
+ encode_from16(3, 1, 1, &samples, &dst, n);
+ break;
+ case CODEC_ID_PCM_U24BE:
+ encode_from16(3, 0, 1, &samples, &dst, n);
+ break;
+ case CODEC_ID_PCM_S24DAUD:
+ for(;n>0;n--) {
+ uint32_t tmp = ff_reverse[*samples >> 8] +
+ (ff_reverse[*samples & 0xff] << 8);
+ tmp <<= 4; // sync flags would go here
+ dst[2] = tmp & 0xff;
+ tmp >>= 8;
+ dst[1] = tmp & 0xff;
+ dst[0] = tmp >> 8;
+ samples++;
+ dst += 3;
+ }
+ break;
case CODEC_ID_PCM_S16LE:
for(;n>0;n--) {
v = *samples++;
@@ -287,6 +375,27 @@ static int pcm_decode_init(AVCodecContext * avctx)
return 0;
}
+/**
+ * \brief convert samples to 16 bit
+ * \param bps byte per sample for the source format, must be >= 2
+ * \param le 0 for big-, 1 for little-endian
+ * \param us 0 for signed, 1 for unsigned input
+ * \param src input samples
+ * \param samples output samples
+ * \param src_len number of bytes in src
+ */
+static inline void decode_to16(int bps, int le, int us,
+ uint8_t **src, short **samples, int src_len)
+{
+ register int n = src_len / bps;
+ if (le) *src += bps - 2;
+ for(;n>0;n--) {
+ *(*samples)++ = ((*src)[le] << 8 | (*src)[1 - le]) - (us?0x8000:0);
+ *src += bps;
+ }
+ if (le) *src -= bps - 2;
+}
+
static int pcm_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t *buf, int buf_size)
@@ -303,6 +412,40 @@ static int pcm_decode_frame(AVCodecContext *avctx,
buf_size = AVCODEC_MAX_AUDIO_FRAME_SIZE/2;
switch(avctx->codec->id) {
+ case CODEC_ID_PCM_S32LE:
+ decode_to16(4, 1, 0, &src, &samples, buf_size);
+ break;
+ case CODEC_ID_PCM_S32BE:
+ decode_to16(4, 0, 0, &src, &samples, buf_size);
+ break;
+ case CODEC_ID_PCM_U32LE:
+ decode_to16(4, 1, 1, &src, &samples, buf_size);
+ break;
+ case CODEC_ID_PCM_U32BE:
+ decode_to16(4, 0, 1, &src, &samples, buf_size);
+ break;
+ case CODEC_ID_PCM_S24LE:
+ decode_to16(3, 1, 0, &src, &samples, buf_size);
+ break;
+ case CODEC_ID_PCM_S24BE:
+ decode_to16(3, 0, 0, &src, &samples, buf_size);
+ break;
+ case CODEC_ID_PCM_U24LE:
+ decode_to16(3, 1, 1, &src, &samples, buf_size);
+ break;
+ case CODEC_ID_PCM_U24BE:
+ decode_to16(3, 0, 1, &src, &samples, buf_size);
+ break;
+ case CODEC_ID_PCM_S24DAUD:
+ n = buf_size / 3;
+ for(;n>0;n--) {
+ uint32_t v = src[0] << 16 | src[1] << 8 | src[2];
+ v >>= 4; // sync flags are here
+ *samples++ = ff_reverse[(v >> 8) & 0xff] +
+ (ff_reverse[v & 0xff] << 8);
+ src += 3;
+ }
+ break;
case CODEC_ID_PCM_S16LE:
n = buf_size >> 1;
for(;n>0;n--) {
@@ -382,6 +525,15 @@ AVCodec name ## _decoder = { \
pcm_decode_frame, \
}
+PCM_CODEC(CODEC_ID_PCM_S32LE, pcm_s32le);
+PCM_CODEC(CODEC_ID_PCM_S32BE, pcm_s32be);
+PCM_CODEC(CODEC_ID_PCM_U32LE, pcm_u32le);
+PCM_CODEC(CODEC_ID_PCM_U32BE, pcm_u32be);
+PCM_CODEC(CODEC_ID_PCM_S24LE, pcm_s24le);
+PCM_CODEC(CODEC_ID_PCM_S24BE, pcm_s24be);
+PCM_CODEC(CODEC_ID_PCM_U24LE, pcm_u24le);
+PCM_CODEC(CODEC_ID_PCM_U24BE, pcm_u24be);
+PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
generated by cgit v1.2.3 (git 2.25.1) at 2025-07-02 20:58:17 +0000