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MT#55283 add G.726 codec type

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The ffmpeg G.726 encoder operates on fixed frame sizes which don't
reflect the expected frame size on the wire. Add an encoder init wrapper
to set the correct frame size.

Change-Id: I4d635e52b6c3bd4f924d1b295ec1bf4c56ef22bc
pull/2100/head
Richard Fuchs 1 month ago
parent b0738107ec
commit a3cf8aea9b
1 changed files with 117 additions and 88 deletions
Show Stats Download Patch File Download Diff File

205
lib/codeclib.c
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@ -73,6 +73,8 @@ static const char *avc_encoder_init(encoder_t *enc, const str *);
static int avc_encoder_input(encoder_t *enc, AVFrame **frame);
static void avc_encoder_close(encoder_t *enc);
static const char *g726_encoder_init(encoder_t *enc, const str *);
static int amr_decoder_input(decoder_t *dec, const str *data, GQueue *out);
static void amr_encoder_got_packet(encoder_t *enc);
static int ilbc_decoder_input(decoder_t *dec, const str *data, GQueue *out);
@ -243,6 +245,15 @@ static const codec_type_t codec_type_avcodec = {
.encoder_input = avc_encoder_input,
.encoder_close = avc_encoder_close,
};
static const codec_type_t codec_type_g726 = {
.def_init = avc_def_init,
.decoder_init = avc_decoder_init,
.decoder_input = avc_decoder_input,
.decoder_close = avc_decoder_close,
.encoder_init = g726_encoder_init,
.encoder_input = avc_encoder_input,
.encoder_close = avc_encoder_close,
};
static const codec_type_t codec_type_libopus = {
.decoder_init = libopus_decoder_init,
.decoder_input = libopus_decoder_input,
@ -773,94 +784,102 @@ static struct codec_def_s __codec_defs[] = {
.format_cmp = format_cmp_ignore,
.codec_type = &codec_type_cn,
},
{
.rtpname = "G726-16",
.avcodec_id = AV_CODEC_ID_ADPCM_G726,
.default_clockrate = 8000,
.default_channels = 1,
.default_ptime = 20,
.minimum_ptime = 20,
.default_bitrate = 16000,
.packetizer = packetizer_passthrough,
.media_type = MT_AUDIO,
.codec_type = &codec_type_avcodec,
.dtx_methods = {
[DTX_SILENCE] = &dtx_method_silence,
[DTX_CN] = &dtx_method_cn,
},
},
{
.rtpname = "G726-24",
.avcodec_id = AV_CODEC_ID_ADPCM_G726,
.default_clockrate = 8000,
.default_channels = 1,
.default_ptime = 20,
.minimum_ptime = 20,
.default_bitrate = 24000,
.packetizer = packetizer_passthrough,
.media_type = MT_AUDIO,
.codec_type = &codec_type_avcodec,
.dtx_methods = {
[DTX_SILENCE] = &dtx_method_silence,
[DTX_CN] = &dtx_method_cn,
},
},
{
.rtpname = "G726-32",
.avcodec_id = AV_CODEC_ID_ADPCM_G726,
.default_clockrate = 8000,
.default_channels = 1,
.default_ptime = 20,
.minimum_ptime = 20,
.default_bitrate = 32000,
.packetizer = packetizer_passthrough,
.media_type = MT_AUDIO,
.codec_type = &codec_type_avcodec,
.dtx_methods = {
[DTX_SILENCE] = &dtx_method_silence,
[DTX_CN] = &dtx_method_cn,
},
},
{
.rtpname = "G726-40",
.avcodec_id = AV_CODEC_ID_ADPCM_G726,
.default_clockrate = 8000,
.default_channels = 1,
.default_ptime = 20,
.minimum_ptime = 20,
.default_bitrate = 40000,
.packetizer = packetizer_passthrough,
.media_type = MT_AUDIO,
.codec_type = &codec_type_avcodec,
.dtx_methods = {
[DTX_SILENCE] = &dtx_method_silence,
[DTX_CN] = &dtx_method_cn,
},
},
{
.rtpname = "L16",
.avcodec_id = AV_CODEC_ID_PCM_S16BE,
.default_clockrate = 44100,
.default_channels = 1,
.default_ptime = 20,
.minimum_ptime = 20,
.bits_per_sample = 16,
.packetizer = packetizer_passthrough,
.media_type = MT_AUDIO,
.codec_type = &codec_type_avcodec,
},
{
.rtpname = "X-L16",
.avcodec_id = AV_CODEC_ID_PCM_S16LE,
.default_clockrate = 44100,
.default_channels = 1,
.default_ptime = 20,
.minimum_ptime = 20,
.bits_per_sample = 16,
.packetizer = packetizer_passthrough,
.media_type = MT_AUDIO,
.codec_type = &codec_type_avcodec,
},
{
.rtpname = "G726-16",
.avcodec_id = AV_CODEC_ID_ADPCM_G726,
.default_clockrate = 8000,
.default_channels = 1,
.default_ptime = 20,
.minimum_ptime = 20,
.default_bitrate = 16000,
.packetizer = packetizer_samplestream,
.bits_per_sample = 2,
.media_type = MT_AUDIO,
.codec_type = &codec_type_g726,
.dtx_methods = {
[DTX_SILENCE] = &dtx_method_silence,
[DTX_CN] = &dtx_method_cn,
},
.fixed_sizes = 1,
},
{
.rtpname = "G726-24",
.avcodec_id = AV_CODEC_ID_ADPCM_G726,
.default_clockrate = 8000,
.default_channels = 1,
.default_ptime = 20,
.minimum_ptime = 20,
.default_bitrate = 24000,
.packetizer = packetizer_samplestream,
.bits_per_sample = 3,
.media_type = MT_AUDIO,
.codec_type = &codec_type_g726,
.dtx_methods = {
[DTX_SILENCE] = &dtx_method_silence,
[DTX_CN] = &dtx_method_cn,
},
.fixed_sizes = 1,
},
{
.rtpname = "G726-32",
.avcodec_id = AV_CODEC_ID_ADPCM_G726,
.default_clockrate = 8000,
.default_channels = 1,
.default_ptime = 20,
.minimum_ptime = 20,
.default_bitrate = 32000,
.packetizer = packetizer_samplestream,
.bits_per_sample = 4,
.media_type = MT_AUDIO,
.codec_type = &codec_type_g726,
.dtx_methods = {
[DTX_SILENCE] = &dtx_method_silence,
[DTX_CN] = &dtx_method_cn,
},
.fixed_sizes = 1,
},
{
.rtpname = "G726-40",
.avcodec_id = AV_CODEC_ID_ADPCM_G726,
.default_clockrate = 8000,
.default_channels = 1,
.default_ptime = 20,
.minimum_ptime = 20,
.default_bitrate = 40000,
.packetizer = packetizer_samplestream,
.bits_per_sample = 5,
.media_type = MT_AUDIO,
.codec_type = &codec_type_g726,
.dtx_methods = {
[DTX_SILENCE] = &dtx_method_silence,
[DTX_CN] = &dtx_method_cn,
},
.fixed_sizes = 1,
},
{
.rtpname = "L16",
.avcodec_id = AV_CODEC_ID_PCM_S16BE,
.default_clockrate = 44100,
.default_channels = 1,
.default_ptime = 20,
.minimum_ptime = 20,
.bits_per_sample = 16,
.packetizer = packetizer_passthrough,
.media_type = MT_AUDIO,
.codec_type = &codec_type_avcodec,
},
{
.rtpname = "X-L16",
.avcodec_id = AV_CODEC_ID_PCM_S16LE,
.default_clockrate = 44100,
.default_channels = 1,
.default_ptime = 20,
.minimum_ptime = 20,
.bits_per_sample = 16,
.packetizer = packetizer_passthrough,
.media_type = MT_AUDIO,
.codec_type = &codec_type_avcodec,
},
// for file reading and writing
{
.rtpname = "PCM-U8",
@ -1891,6 +1910,16 @@ static const char *avc_encoder_init(encoder_t *enc, const str *extra_opts) {
return NULL;
}
static const char *g726_encoder_init(encoder_t *enc, const str *extra_opts) {
const char *err = avc_encoder_init(enc, extra_opts);
if (err)
return err;
enc->samples_per_packet = enc->ptime * 8;
return NULL;
}
int encoder_config(encoder_t *enc, codec_def_t *def, int bitrate, int ptime,
const format_t *requested_format, format_t *actual_format)
{

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