39 "fixed",
"float",
"double"
42 #define OFFSET(x) offsetof(VolumeContext, x)
43 #define A AV_OPT_FLAG_AUDIO_PARAM
46 {
"volume",
"Volume adjustment.",
48 {
"precision",
"Mathematical precision.",
144 dst[i] = av_clip_uint8(((((int64_t)src[i] - 128) * volume + 128) >> 8) + 128);
152 dst[i] = av_clip_uint8((((src[i] - 128) * volume + 128) >> 8) + 128);
159 int16_t *smp_dst = (int16_t *)dst;
160 const int16_t *smp_src = (
const int16_t *)src;
162 smp_dst[i] = av_clip_int16(((int64_t)smp_src[i] * volume + 128) >> 8);
169 int16_t *smp_dst = (int16_t *)dst;
170 const int16_t *smp_src = (
const int16_t *)src;
172 smp_dst[i] = av_clip_int16((smp_src[i] * volume + 128) >> 8);
182 smp_dst[i] = av_clipl_int32((((int64_t)smp_src[i] * volume + 128) >> 8));
257 int p, plane_samples;
265 for (p = 0; p < vol->
planes; p++) {
271 for (p = 0; p < vol->
planes; p++) {
274 vol->
volume, plane_samples);
277 for (p = 0; p < vol->
planes; p++) {
280 vol->
volume, plane_samples);
315 .
inputs = avfilter_af_volume_inputs,
316 .
outputs = avfilter_af_volume_outputs,