diff options
Diffstat (limited to 'libmpcodecs/ae_pcm.c')
-rw-r--r-- | libmpcodecs/ae_pcm.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/libmpcodecs/ae_pcm.c b/libmpcodecs/ae_pcm.c new file mode 100644 index 0000000000..2fb2973bfb --- /dev/null +++ b/libmpcodecs/ae_pcm.c @@ -0,0 +1,71 @@ +#include <stdio.h> +#include <stdlib.h> +#include <inttypes.h> +#include <string.h> +#include "m_option.h" +#include "../mp_msg.h" +#include "aviheader.h" +#include "../libaf/af_format.h" +#include "ms_hdr.h" +#include "muxer.h" +#include "ae_pcm.h" + + +static int bind_pcm(audio_encoder_t *encoder, muxer_stream_t *mux_a) +{ + mux_a->h.dwScale=1; + mux_a->h.dwRate=encoder->params.sample_rate; + mux_a->wf=malloc(sizeof(WAVEFORMATEX)); + mux_a->wf->wFormatTag=0x1; // PCM + mux_a->wf->nChannels=encoder->params.channels; + mux_a->h.dwSampleSize=2*mux_a->wf->nChannels; + mux_a->wf->nBlockAlign=mux_a->h.dwSampleSize; + mux_a->wf->nSamplesPerSec=mux_a->h.dwRate; + mux_a->wf->nAvgBytesPerSec=mux_a->h.dwSampleSize*mux_a->wf->nSamplesPerSec; + mux_a->wf->wBitsPerSample=16; + mux_a->wf->cbSize=0; // FIXME for l3codeca.acm + + encoder->input_format = (mux_a->wf->wBitsPerSample==8) ? AF_FORMAT_U8 : AF_FORMAT_S16_LE; + encoder->min_buffer_size = 16384; + encoder->max_buffer_size = mux_a->wf->nAvgBytesPerSec; + + return 1; +} + +static int encode_pcm(audio_encoder_t *encoder, uint8_t *dest, void *src, int nsamples, int max_size) +{ + max_size = min(nsamples, max_size); + memcpy(dest, src, max_size); + return max_size; +} + +static void set_decoded_len(audio_encoder_t *encoder, int len) +{ + return; +} + +static int close_pcm(audio_encoder_t *encoder) +{ + return 1; +} + +static int get_frame_size(audio_encoder_t *encoder) +{ + return 0; +} + +int mpae_init_pcm(audio_encoder_t *encoder) +{ + encoder->params.samples_per_frame = encoder->params.sample_rate; + encoder->params.bitrate = encoder->params.sample_rate * encoder->params.channels * 2 * 8; + + encoder->decode_buffer_size = encoder->params.bitrate / 8; + encoder->bind = bind_pcm; + encoder->get_frame_size = get_frame_size; + encoder->set_decoded_len = set_decoded_len; + encoder->encode = encode_pcm; + encoder->close = close_pcm; + + return 1; +} + |