45 void av_audio_fifo_free(AVAudioFifo *af)  in av_audio_fifo_free()  argument
47     if (af) {  in av_audio_fifo_free()
48         if (af->buf) {  in av_audio_fifo_free()
50             for (i = 0; i < af->nb_buffers; i++) {  in av_audio_fifo_free()
51                 av_fifo_freep(&af->buf[i]);  in av_audio_fifo_free()
53             av_freep(&af->buf);  in av_audio_fifo_free()
55         av_free(af);  in av_audio_fifo_free()
62     AVAudioFifo *af;  in av_audio_fifo_alloc()  local
69     af = av_mallocz(sizeof(*af));  in av_audio_fifo_alloc()
70     if (!af)  in av_audio_fifo_alloc()
73     af->channels    = channels;  in av_audio_fifo_alloc()
74     af->sample_fmt  = sample_fmt;  in av_audio_fifo_alloc()
75     af->sample_size = buf_size / nb_samples;  in av_audio_fifo_alloc()
76     af->nb_buffers  = av_sample_fmt_is_planar(sample_fmt) ? channels : 1;  in av_audio_fifo_alloc()
78     af->buf = av_mallocz_array(af->nb_buffers, sizeof(*af->buf));  in av_audio_fifo_alloc()
79     if (!af->buf)  in av_audio_fifo_alloc()
82     for (i = 0; i < af->nb_buffers; i++) {  in av_audio_fifo_alloc()
83         af->buf[i] = av_fifo_alloc(buf_size);  in av_audio_fifo_alloc()
84         if (!af->buf[i])  in av_audio_fifo_alloc()
87     af->allocated_samples = nb_samples;  in av_audio_fifo_alloc()
89     return af;  in av_audio_fifo_alloc()
92     av_audio_fifo_free(af);  in av_audio_fifo_alloc()
96 int av_audio_fifo_realloc(AVAudioFifo *af, int nb_samples)  in av_audio_fifo_realloc()  argument
100     if ((ret = av_samples_get_buffer_size(&buf_size, af->channels, nb_samples,  in av_audio_fifo_realloc()
101                                           af->sample_fmt, 1)) < 0)  in av_audio_fifo_realloc()
104     for (i = 0; i < af->nb_buffers; i++) {  in av_audio_fifo_realloc()
105         if ((ret = av_fifo_realloc2(af->buf[i], buf_size)) < 0)  in av_audio_fifo_realloc()
108     af->allocated_samples = nb_samples;  in av_audio_fifo_realloc()
112 int av_audio_fifo_write(AVAudioFifo *af, void **data, int nb_samples)  in av_audio_fifo_write()  argument
117     if (av_audio_fifo_space(af) < nb_samples) {  in av_audio_fifo_write()
118         int current_size = av_audio_fifo_size(af);  in av_audio_fifo_write()
123         if ((ret = av_audio_fifo_realloc(af, 2 * (current_size + nb_samples))) < 0)  in av_audio_fifo_write()
127     size = nb_samples * af->sample_size;  in av_audio_fifo_write()
128     for (i = 0; i < af->nb_buffers; i++) {  in av_audio_fifo_write()
129         ret = av_fifo_generic_write(af->buf[i], data[i], size, NULL);  in av_audio_fifo_write()
133     af->nb_samples += nb_samples;  in av_audio_fifo_write()
138 int av_audio_fifo_peek(AVAudioFifo *af, void **data, int nb_samples)  in av_audio_fifo_peek()  argument
144     nb_samples = FFMIN(nb_samples, af->nb_samples);  in av_audio_fifo_peek()
148     size = nb_samples * af->sample_size;  in av_audio_fifo_peek()
149     for (i = 0; i < af->nb_buffers; i++) {  in av_audio_fifo_peek()
150         if ((ret = av_fifo_generic_peek(af->buf[i], data[i], size, NULL)) < 0)  in av_audio_fifo_peek()
157 int av_audio_fifo_peek_at(AVAudioFifo *af, void **data, int nb_samples, int offset)  in av_audio_fifo_peek_at()  argument
161     if (offset < 0 || offset >= af->nb_samples)  in av_audio_fifo_peek_at()
165     nb_samples = FFMIN(nb_samples, af->nb_samples);  in av_audio_fifo_peek_at()
168     if (offset > af->nb_samples - nb_samples)  in av_audio_fifo_peek_at()
171     offset *= af->sample_size;  in av_audio_fifo_peek_at()
172     size = nb_samples * af->sample_size;  in av_audio_fifo_peek_at()
173     for (i = 0; i < af->nb_buffers; i++) {  in av_audio_fifo_peek_at()
174         if ((ret = av_fifo_generic_peek_at(af->buf[i], data[i], offset, size, NULL)) < 0)  in av_audio_fifo_peek_at()
181 int av_audio_fifo_read(AVAudioFifo *af, void **data, int nb_samples)  in av_audio_fifo_read()  argument
187     nb_samples = FFMIN(nb_samples, af->nb_samples);  in av_audio_fifo_read()
191     size = nb_samples * af->sample_size;  in av_audio_fifo_read()
192     for (i = 0; i < af->nb_buffers; i++) {  in av_audio_fifo_read()
193         if (av_fifo_generic_read(af->buf[i], data[i], size, NULL) < 0)  in av_audio_fifo_read()
196     af->nb_samples -= nb_samples;  in av_audio_fifo_read()
201 int av_audio_fifo_drain(AVAudioFifo *af, int nb_samples)  in av_audio_fifo_drain()  argument
207     nb_samples = FFMIN(nb_samples, af->nb_samples);  in av_audio_fifo_drain()
210         size = nb_samples * af->sample_size;  in av_audio_fifo_drain()
211         for (i = 0; i < af->nb_buffers; i++)  in av_audio_fifo_drain()
212             av_fifo_drain(af->buf[i], size);  in av_audio_fifo_drain()
213         af->nb_samples -= nb_samples;  in av_audio_fifo_drain()
218 void av_audio_fifo_reset(AVAudioFifo *af)  in av_audio_fifo_reset()  argument
222     for (i = 0; i < af->nb_buffers; i++)  in av_audio_fifo_reset()
223         av_fifo_reset(af->buf[i]);  in av_audio_fifo_reset()
225     af->nb_samples = 0;  in av_audio_fifo_reset()
228 int av_audio_fifo_size(AVAudioFifo *af)  in av_audio_fifo_size()  argument
230     return af->nb_samples;  in av_audio_fifo_size()
233 int av_audio_fifo_space(AVAudioFifo *af)  in av_audio_fifo_space()  argument
235     return af->allocated_samples - af->nb_samples;  in av_audio_fifo_space()