audio encoding reworked

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@15235 b3059339-0415-0410-9bf9-f77b7e298cf2

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;
+}
+