[xcode] Make sample rate + channels variable

This change is preparation to use ffmpeg's resampling capabilities to keep local
audio in sync (by up/downsampling slightly). This requires that sample rates are
not fixed for a transcode profile.

Added benefit of this is that we don't need quite as many xcode profiles.
This commit is contained in:
ejurgensen 2019-04-02 22:47:11 +02:00
parent 413ce25ec6
commit 53780a7ef3
9 changed files with 114 additions and 173 deletions

View File

@ -408,7 +408,7 @@ artwork_get(struct evbuffer *evbuf, char *path, struct evbuffer *inbuf, int max_
DPRINTF(E_SPAM, L_ART, "Getting artwork (max destination width %d height %d)\n", max_w, max_h);
xcode_decode = transcode_decode_setup(XCODE_JPEG, DATA_KIND_FILE, path, inbuf, 0); // Covers XCODE_PNG too
xcode_decode = transcode_decode_setup(XCODE_JPEG, NULL, DATA_KIND_FILE, path, inbuf, 0); // Covers XCODE_PNG too
if (!xcode_decode)
{
if (path)
@ -462,9 +462,9 @@ artwork_get(struct evbuffer *evbuf, char *path, struct evbuffer *inbuf, int max_
}
if (format_ok == ART_FMT_JPEG)
xcode_encode = transcode_encode_setup(XCODE_JPEG, xcode_decode, NULL, target_w, target_h);
xcode_encode = transcode_encode_setup(XCODE_JPEG, NULL, xcode_decode, NULL, target_w, target_h);
else
xcode_encode = transcode_encode_setup(XCODE_PNG, xcode_decode, NULL, target_w, target_h);
xcode_encode = transcode_encode_setup(XCODE_PNG, NULL, xcode_decode, NULL, target_w, target_h);
if (!xcode_encode)
{

View File

@ -80,6 +80,11 @@
"<h1>%s</h1>\n" \
"</body>\n</html>\n"
#define HTTPD_STREAM_SAMPLE_RATE 44100
#define HTTPD_STREAM_BPS 16
#define HTTPD_STREAM_CHANNELS 2
struct content_type_map {
char *ext;
char *ctype;
@ -1029,6 +1034,7 @@ httpd_request_parse(struct evhttp_request *req, struct httpd_uri_parsed *uri_par
void
httpd_stream_file(struct evhttp_request *req, int id)
{
struct media_quality quality = { HTTPD_STREAM_SAMPLE_RATE, HTTPD_STREAM_BPS, HTTPD_STREAM_CHANNELS };
struct media_file_info *mfi;
struct stream_ctx *st;
void (*stream_cb)(int fd, short event, void *arg);
@ -1128,7 +1134,7 @@ httpd_stream_file(struct evhttp_request *req, int id)
stream_cb = stream_chunk_xcode_cb;
st->xcode = transcode_setup(XCODE_PCM16_HEADER, mfi->data_kind, mfi->path, mfi->song_length, &st->size);
st->xcode = transcode_setup(XCODE_PCM16_HEADER, &quality, mfi->data_kind, mfi->path, mfi->song_length, &st->size);
if (!st->xcode)
{
DPRINTF(E_WARN, L_HTTPD, "Transcoding setup failed, aborting streaming\n");

View File

@ -47,6 +47,11 @@ extern struct event_base *evbase_httpd;
// How many bytes we try to read at a time from the httpd pipe
#define STREAMING_READ_SIZE STOB(352, 16, 2)
#define STREAMING_MP3_SAMPLE_RATE 44100
#define STREAMING_MP3_BPS 16
#define STREAMING_MP3_CHANNELS 2
// Linked list of mp3 streaming requests
struct streaming_session {
struct evhttp_request *req;
@ -140,6 +145,7 @@ streaming_end(void)
static void
streaming_meta_cb(evutil_socket_t fd, short event, void *arg)
{
struct media_quality mp3_quality = { STREAMING_MP3_SAMPLE_RATE, STREAMING_MP3_BPS, STREAMING_MP3_CHANNELS };
struct media_quality quality;
struct decode_ctx *decode_ctx;
int ret;
@ -151,19 +157,17 @@ streaming_meta_cb(evutil_socket_t fd, short event, void *arg)
goto error;
decode_ctx = NULL;
if (quality.sample_rate == 44100 && quality.bits_per_sample == 16)
decode_ctx = transcode_decode_setup_raw(XCODE_PCM16_44100);
else if (quality.sample_rate == 44100 && quality.bits_per_sample == 24)
decode_ctx = transcode_decode_setup_raw(XCODE_PCM24_44100);
else if (quality.sample_rate == 48000 && quality.bits_per_sample == 16)
decode_ctx = transcode_decode_setup_raw(XCODE_PCM16_48000);
else if (quality.sample_rate == 48000 && quality.bits_per_sample == 24)
decode_ctx = transcode_decode_setup_raw(XCODE_PCM24_48000);
if (quality.bits_per_sample == 16)
decode_ctx = transcode_decode_setup_raw(XCODE_PCM16, &quality);
else if (quality.bits_per_sample == 24)
decode_ctx = transcode_decode_setup_raw(XCODE_PCM24, &quality);
else if (quality.bits_per_sample == 32)
decode_ctx = transcode_decode_setup_raw(XCODE_PCM32, &quality);
if (!decode_ctx)
goto error;
streaming_encode_ctx = transcode_encode_setup(XCODE_MP3, decode_ctx, NULL, 0, 0);
streaming_encode_ctx = transcode_encode_setup(XCODE_MP3, &mp3_quality, decode_ctx, NULL, 0, 0);
transcode_decode_cleanup(&decode_ctx);
if (!streaming_encode_ctx)
{
@ -198,7 +202,7 @@ encode_buffer(uint8_t *buffer, size_t size)
samples = BTOS(size, streaming_quality.bits_per_sample, streaming_quality.channels);
frame = transcode_frame_new(buffer, size, samples, streaming_quality.sample_rate, streaming_quality.bits_per_sample);
frame = transcode_frame_new(buffer, size, samples, &streaming_quality);
if (!frame)
{
DPRINTF(E_LOG, L_STREAMING, "Could not convert raw PCM to frame\n");

View File

@ -34,7 +34,7 @@ setup(struct input_source *source)
{
struct transcode_ctx *ctx;
ctx = transcode_setup(XCODE_PCM_NATIVE, source->data_kind, source->path, source->len_ms, NULL);
ctx = transcode_setup(XCODE_PCM_NATIVE, NULL, source->data_kind, source->path, source->len_ms, NULL);
if (!ctx)
return -1;

View File

@ -18,11 +18,11 @@
#define ARRAY_SIZE(x) ((unsigned int)(sizeof(x) / sizeof((x)[0])))
#ifndef MIN
# define MIN(a, b) ((a < b) ? a : b)
# define MIN(a, b) (((a) < (b)) ? (a) : (b))
#endif
#ifndef MAX
#define MAX(a, b) ((a > b) ? a : b)
# define MAX(a, b) (((a) > (b)) ? (a) : (b))
#endif

View File

@ -250,24 +250,12 @@ device_stop_cb(struct output_device *device, enum output_device_state status)
static enum transcode_profile
quality_to_xcode(struct media_quality *quality)
{
if (quality->sample_rate == 44100 && quality->bits_per_sample == 16)
return XCODE_PCM16_44100;
if (quality->sample_rate == 44100 && quality->bits_per_sample == 24)
return XCODE_PCM24_44100;
if (quality->sample_rate == 44100 && quality->bits_per_sample == 32)
return XCODE_PCM32_44100;
if (quality->sample_rate == 48000 && quality->bits_per_sample == 16)
return XCODE_PCM16_48000;
if (quality->sample_rate == 48000 && quality->bits_per_sample == 24)
return XCODE_PCM24_48000;
if (quality->sample_rate == 48000 && quality->bits_per_sample == 32)
return XCODE_PCM32_48000;
if (quality->sample_rate == 96000 && quality->bits_per_sample == 16)
return XCODE_PCM16_96000;
if (quality->sample_rate == 96000 && quality->bits_per_sample == 24)
return XCODE_PCM24_96000;
if (quality->sample_rate == 96000 && quality->bits_per_sample == 32)
return XCODE_PCM32_96000;
if (quality->bits_per_sample == 16)
return XCODE_PCM16;
if (quality->bits_per_sample == 24)
return XCODE_PCM24;
if (quality->bits_per_sample == 32)
return XCODE_PCM32;
return XCODE_UNKNOWN;
}
@ -288,7 +276,7 @@ encoding_reset(struct media_quality *quality)
return -1;
}
decode_ctx = transcode_decode_setup_raw(profile);
decode_ctx = transcode_decode_setup_raw(profile, quality);
if (!decode_ctx)
{
DPRINTF(E_LOG, L_PLAYER, "Could not create subscription decoding context (profile %d)\n", profile);
@ -306,7 +294,7 @@ encoding_reset(struct media_quality *quality)
profile = quality_to_xcode(&subscription->quality);
if (profile != XCODE_UNKNOWN)
subscription->encode_ctx = transcode_encode_setup(profile, decode_ctx, NULL, 0, 0);
subscription->encode_ctx = transcode_encode_setup(profile, &subscription->quality, decode_ctx, NULL, 0, 0);
else
DPRINTF(E_LOG, L_PLAYER, "Could not setup resampling to %d/%d/%d for output\n",
subscription->quality.sample_rate, subscription->quality.bits_per_sample, subscription->quality.channels);
@ -354,7 +342,7 @@ buffer_fill(struct output_buffer *obuf, void *buf, size_t bufsize, struct media_
if (!output_quality_subscriptions[i].encode_ctx)
continue;
frame = transcode_frame_new(buf, bufsize, nsamples, quality->sample_rate, quality->bits_per_sample);
frame = transcode_frame_new(buf, bufsize, nsamples, quality);
if (!frame)
continue;

View File

@ -1842,7 +1842,7 @@ payload_encode(struct evbuffer *evbuf, uint8_t *rawbuf, size_t rawbuf_size, int
transcode_frame *frame;
int len;
frame = transcode_frame_new(rawbuf, rawbuf_size, nsamples, quality->sample_rate, quality->bits_per_sample);
frame = transcode_frame_new(rawbuf, rawbuf_size, nsamples, quality);
if (!frame)
{
DPRINTF(E_LOG, L_CAST, "Could not convert raw PCM to frame (bufsize=%zu)\n", rawbuf_size);
@ -2204,14 +2204,14 @@ cast_init(void)
return -1;
}
decode_ctx = transcode_decode_setup_raw(XCODE_PCM16_48000);
decode_ctx = transcode_decode_setup_raw(XCODE_PCM16, &cast_quality_default);
if (!decode_ctx)
{
DPRINTF(E_LOG, L_CAST, "Could not create decoding context\n");
goto out_tls_deinit;
}
cast_encode_ctx = transcode_encode_setup(XCODE_OPUS, decode_ctx, NULL, 0, 0);
cast_encode_ctx = transcode_encode_setup(XCODE_OPUS, &cast_quality_default, decode_ctx, NULL, 0, 0);
transcode_decode_cleanup(&decode_ctx);
if (!cast_encode_ctx)
{

View File

@ -181,7 +181,7 @@ struct encode_ctx
/* -------------------------- PROFILE CONFIGURATION ------------------------ */
static int
init_settings(struct settings_ctx *settings, enum transcode_profile profile)
init_settings(struct settings_ctx *settings, enum transcode_profile profile, struct media_quality *quality)
{
memset(settings, 0, sizeof(struct settings_ctx));
@ -189,100 +189,29 @@ init_settings(struct settings_ctx *settings, enum transcode_profile profile)
{
case XCODE_PCM_NATIVE: // Sample rate and bit depth determined by source
settings->encode_audio = 1;
settings->channel_layout = AV_CH_LAYOUT_STEREO;
settings->channels = 2;
settings->icy = 1;
break;
case XCODE_PCM16_HEADER:
settings->wavheader = 1;
case XCODE_PCM16_44100:
case XCODE_PCM16:
settings->encode_audio = 1;
settings->format = "s16le";
settings->audio_codec = AV_CODEC_ID_PCM_S16LE;
settings->sample_rate = 44100;
settings->channel_layout = AV_CH_LAYOUT_STEREO;
settings->channels = 2;
settings->sample_format = AV_SAMPLE_FMT_S16;
break;
case XCODE_PCM16_48000:
settings->encode_audio = 1;
settings->format = "s16le";
settings->audio_codec = AV_CODEC_ID_PCM_S16LE;
settings->sample_rate = 48000;
settings->channel_layout = AV_CH_LAYOUT_STEREO;
settings->channels = 2;
settings->sample_format = AV_SAMPLE_FMT_S16;
break;
case XCODE_PCM16_96000:
settings->encode_audio = 1;
settings->format = "s16le";
settings->audio_codec = AV_CODEC_ID_PCM_S16LE;
settings->sample_rate = 96000;
settings->channel_layout = AV_CH_LAYOUT_STEREO;
settings->channels = 2;
settings->sample_format = AV_SAMPLE_FMT_S16;
break;
case XCODE_PCM24_44100:
case XCODE_PCM24:
settings->encode_audio = 1;
settings->format = "s24le";
settings->audio_codec = AV_CODEC_ID_PCM_S24LE;
settings->sample_rate = 44100;
settings->channel_layout = AV_CH_LAYOUT_STEREO;
settings->channels = 2;
settings->sample_format = AV_SAMPLE_FMT_S32;
break;
case XCODE_PCM24_48000:
settings->encode_audio = 1;
settings->format = "s24le";
settings->audio_codec = AV_CODEC_ID_PCM_S24LE;
settings->sample_rate = 48000;
settings->channel_layout = AV_CH_LAYOUT_STEREO;
settings->channels = 2;
settings->sample_format = AV_SAMPLE_FMT_S32;
break;
case XCODE_PCM24_96000:
settings->encode_audio = 1;
settings->format = "s24le";
settings->audio_codec = AV_CODEC_ID_PCM_S24LE;
settings->sample_rate = 96000;
settings->channel_layout = AV_CH_LAYOUT_STEREO;
settings->channels = 2;
settings->sample_format = AV_SAMPLE_FMT_S32;
break;
case XCODE_PCM32_44100:
case XCODE_PCM32:
settings->encode_audio = 1;
settings->format = "s32le";
settings->audio_codec = AV_CODEC_ID_PCM_S32LE;
settings->sample_rate = 44100;
settings->channel_layout = AV_CH_LAYOUT_STEREO;
settings->channels = 2;
settings->sample_format = AV_SAMPLE_FMT_S32;
break;
case XCODE_PCM32_48000:
settings->encode_audio = 1;
settings->format = "s32le";
settings->audio_codec = AV_CODEC_ID_PCM_S32LE;
settings->sample_rate = 48000;
settings->channel_layout = AV_CH_LAYOUT_STEREO;
settings->channels = 2;
settings->sample_format = AV_SAMPLE_FMT_S32;
break;
case XCODE_PCM32_96000:
settings->encode_audio = 1;
settings->format = "s32le";
settings->audio_codec = AV_CODEC_ID_PCM_S32LE;
settings->sample_rate = 96000;
settings->channel_layout = AV_CH_LAYOUT_STEREO;
settings->channels = 2;
settings->sample_format = AV_SAMPLE_FMT_S32;
break;
@ -290,9 +219,6 @@ init_settings(struct settings_ctx *settings, enum transcode_profile profile)
settings->encode_audio = 1;
settings->format = "mp3";
settings->audio_codec = AV_CODEC_ID_MP3;
settings->sample_rate = 44100;
settings->channel_layout = AV_CH_LAYOUT_STEREO;
settings->channels = 2;
settings->sample_format = AV_SAMPLE_FMT_S16P;
break;
@ -300,9 +226,6 @@ init_settings(struct settings_ctx *settings, enum transcode_profile profile)
settings->encode_audio = 1;
settings->format = "data"; // Means we get the raw packet from the encoder, no muxing
settings->audio_codec = AV_CODEC_ID_OPUS;
settings->sample_rate = 48000;
settings->channel_layout = AV_CH_LAYOUT_STEREO;
settings->channels = 2;
settings->sample_format = AV_SAMPLE_FMT_S16; // Only libopus support
break;
@ -326,6 +249,23 @@ init_settings(struct settings_ctx *settings, enum transcode_profile profile)
return -1;
}
if (quality && quality->sample_rate)
{
settings->sample_rate = quality->sample_rate;
}
if (quality && quality->channels)
{
settings->channels = quality->channels;
settings->channel_layout = av_get_default_channel_layout(quality->channels);
}
if (quality && quality->bits_per_sample && (quality->bits_per_sample != 8 * av_get_bytes_per_sample(settings->sample_format)))
{
DPRINTF(E_LOG, L_XCODE, "Bug! Mismatch between profile and media quality\n");
return -1;
}
return 0;
}
@ -352,6 +292,19 @@ stream_settings_set(struct stream_ctx *s, struct settings_ctx *settings, enum AV
/* -------------------------------- HELPERS -------------------------------- */
static enum AVSampleFormat
bitdepth2format(int bits_per_sample)
{
if (bits_per_sample == 16)
return AV_SAMPLE_FMT_S16;
else if (bits_per_sample == 24)
return AV_SAMPLE_FMT_S32;
else if (bits_per_sample == 32)
return AV_SAMPLE_FMT_S32;
else
return AV_SAMPLE_FMT_NONE;
}
static inline char *
err2str(int errnum)
{
@ -1209,7 +1162,7 @@ close_filters(struct encode_ctx *ctx)
/* Setup */
struct decode_ctx *
transcode_decode_setup(enum transcode_profile profile, enum data_kind data_kind, const char *path, struct evbuffer *evbuf, uint32_t song_length)
transcode_decode_setup(enum transcode_profile profile, struct media_quality *quality, enum data_kind data_kind, const char *path, struct evbuffer *evbuf, uint32_t song_length)
{
struct decode_ctx *ctx;
@ -1220,7 +1173,7 @@ transcode_decode_setup(enum transcode_profile profile, enum data_kind data_kind,
ctx->duration = song_length;
ctx->data_kind = data_kind;
if ((init_settings(&ctx->settings, profile) < 0) || (open_input(ctx, path, evbuf) < 0))
if ((init_settings(&ctx->settings, profile, quality) < 0) || (open_input(ctx, path, evbuf) < 0))
goto fail_free;
return ctx;
@ -1233,7 +1186,7 @@ transcode_decode_setup(enum transcode_profile profile, enum data_kind data_kind,
}
struct encode_ctx *
transcode_encode_setup(enum transcode_profile profile, struct decode_ctx *src_ctx, off_t *est_size, int width, int height)
transcode_encode_setup(enum transcode_profile profile, struct media_quality *quality, struct decode_ctx *src_ctx, off_t *est_size, int width, int height)
{
struct encode_ctx *ctx;
int bps;
@ -1242,17 +1195,19 @@ transcode_encode_setup(enum transcode_profile profile, struct decode_ctx *src_ct
CHECK_NULL(L_XCODE, ctx->filt_frame = av_frame_alloc());
CHECK_NULL(L_XCODE, ctx->encoded_pkt = av_packet_alloc());
if (init_settings(&ctx->settings, profile) < 0)
if (init_settings(&ctx->settings, profile, quality) < 0)
goto fail_free;
ctx->settings.width = width;
ctx->settings.height = height;
// Profile does not specify a sample rate -> use same as source
// Caller did not specify a sample rate -> use same as source
if (!ctx->settings.sample_rate && ctx->settings.encode_audio)
ctx->settings.sample_rate = src_ctx->audio_stream.codec->sample_rate;
{
ctx->settings.sample_rate = src_ctx->audio_stream.codec->sample_rate;
}
// Profile does not specify a sample format -> use same as source
// Caller did not specify a sample format -> use same as source
if (!ctx->settings.sample_format && ctx->settings.encode_audio)
{
bps = av_get_bytes_per_sample(src_ctx->audio_stream.codec->sample_fmt);
@ -1270,6 +1225,13 @@ transcode_encode_setup(enum transcode_profile profile, struct decode_ctx *src_ct
}
}
// Caller did not specify channels -> use same as source
if (!ctx->settings.channels && ctx->settings.encode_audio)
{
ctx->settings.channels = src_ctx->audio_stream.codec->channels;
ctx->settings.channel_layout = src_ctx->audio_stream.codec->channel_layout;
}
if (ctx->settings.wavheader)
make_wav_header(ctx, src_ctx, est_size);
@ -1297,20 +1259,20 @@ transcode_encode_setup(enum transcode_profile profile, struct decode_ctx *src_ct
}
struct transcode_ctx *
transcode_setup(enum transcode_profile profile, enum data_kind data_kind, const char *path, uint32_t song_length, off_t *est_size)
transcode_setup(enum transcode_profile profile, struct media_quality *quality, enum data_kind data_kind, const char *path, uint32_t song_length, off_t *est_size)
{
struct transcode_ctx *ctx;
CHECK_NULL(L_XCODE, ctx = calloc(1, sizeof(struct transcode_ctx)));
ctx->decode_ctx = transcode_decode_setup(profile, data_kind, path, NULL, song_length);
ctx->decode_ctx = transcode_decode_setup(profile, quality, data_kind, path, NULL, song_length);
if (!ctx->decode_ctx)
{
free(ctx);
return NULL;
}
ctx->encode_ctx = transcode_encode_setup(profile, ctx->decode_ctx, est_size, 0, 0);
ctx->encode_ctx = transcode_encode_setup(profile, quality, ctx->decode_ctx, est_size, 0, 0);
if (!ctx->encode_ctx)
{
transcode_decode_cleanup(&ctx->decode_ctx);
@ -1322,7 +1284,7 @@ transcode_setup(enum transcode_profile profile, enum data_kind data_kind, const
}
struct decode_ctx *
transcode_decode_setup_raw(enum transcode_profile profile)
transcode_decode_setup_raw(enum transcode_profile profile, struct media_quality *quality)
{
const AVCodecDescriptor *codec_desc;
struct decode_ctx *ctx;
@ -1331,7 +1293,7 @@ transcode_decode_setup_raw(enum transcode_profile profile)
CHECK_NULL(L_XCODE, ctx = calloc(1, sizeof(struct decode_ctx)));
if (init_settings(&ctx->settings, profile) < 0)
if (init_settings(&ctx->settings, profile, quality) < 0)
{
goto out_free_ctx;
}
@ -1614,7 +1576,7 @@ transcode(struct evbuffer *evbuf, int *icy_timer, struct transcode_ctx *ctx, int
}
transcode_frame *
transcode_frame_new(void *data, size_t size, int nsamples, int sample_rate, int bits_per_sample)
transcode_frame_new(void *data, size_t size, int nsamples, struct media_quality *quality)
{
AVFrame *f;
int ret;
@ -1626,30 +1588,19 @@ transcode_frame_new(void *data, size_t size, int nsamples, int sample_rate, int
return NULL;
}
if (bits_per_sample == 16)
f->format = bitdepth2format(quality->bits_per_sample);
if (f->format == AV_SAMPLE_FMT_NONE)
{
f->format = AV_SAMPLE_FMT_S16;
}
else if (bits_per_sample == 24)
{
f->format = AV_SAMPLE_FMT_S32;
}
else if (bits_per_sample == 32)
{
f->format = AV_SAMPLE_FMT_S32;
}
else
{
DPRINTF(E_LOG, L_XCODE, "transcode_frame_new() called with unsupported bps (%d)\n", bits_per_sample);
DPRINTF(E_LOG, L_XCODE, "transcode_frame_new() called with unsupported bps (%d)\n", quality->bits_per_sample);
av_frame_free(&f);
return NULL;
}
f->sample_rate = sample_rate;
f->sample_rate = quality->sample_rate;
f->nb_samples = nsamples;
f->channel_layout = AV_CH_LAYOUT_STEREO;
f->channel_layout = av_get_default_channel_layout(quality->channels);
#ifdef HAVE_FFMPEG
f->channels = 2;
f->channels = quality->channels;
#endif
f->pts = AV_NOPTS_VALUE;
@ -1658,7 +1609,7 @@ transcode_frame_new(void *data, size_t size, int nsamples, int sample_rate, int
ret = avcodec_fill_audio_frame(f, 2, f->format, data, size, 1);
if (ret < 0)
{
DPRINTF(E_LOG, L_XCODE, "Error filling frame with rawbuf, size %zu, samples %d (%d/%d/2): %s\n", size, nsamples, sample_rate, bits_per_sample, err2str(ret));
DPRINTF(E_LOG, L_XCODE, "Error filling frame with rawbuf, size %zu, samples %d (%d/%d/2): %s\n", size, nsamples, quality->sample_rate, quality->bits_per_sample, err2str(ret));
av_frame_free(&f);
return NULL;
}

View File

@ -5,6 +5,7 @@
#include <event2/buffer.h>
#include "db.h"
#include "http.h"
#include "misc.h"
enum transcode_profile
{
@ -12,18 +13,12 @@ enum transcode_profile
XCODE_UNKNOWN = 0,
// Decodes the best audio stream into PCM16 or PCM24, no resampling (does not add wav header)
XCODE_PCM_NATIVE,
// Decodes/resamples the best audio stream into 44100 PCM16 (with wav header)
// Decodes/resamples the best audio stream into PCM16 (with wav header)
XCODE_PCM16_HEADER,
// Decodes/resamples the best audio stream (no wav headers)
XCODE_PCM16_44100,
XCODE_PCM16_48000,
XCODE_PCM16_96000,
XCODE_PCM24_44100,
XCODE_PCM24_48000,
XCODE_PCM24_96000,
XCODE_PCM32_44100,
XCODE_PCM32_48000,
XCODE_PCM32_96000,
// Decodes/resamples the best audio stream into PCM16/24/32 (no wav headers)
XCODE_PCM16,
XCODE_PCM24,
XCODE_PCM32,
// Transcodes the best audio stream into MP3
XCODE_MP3,
// Transcodes the best audio stream into OPUS
@ -45,16 +40,16 @@ typedef void transcode_frame;
// Setting up
struct decode_ctx *
transcode_decode_setup(enum transcode_profile profile, enum data_kind data_kind, const char *path, struct evbuffer *evbuf, uint32_t song_length);
transcode_decode_setup(enum transcode_profile profile, struct media_quality *quality, enum data_kind data_kind, const char *path, struct evbuffer *evbuf, uint32_t song_length);
struct encode_ctx *
transcode_encode_setup(enum transcode_profile profile, struct decode_ctx *src_ctx, off_t *est_size, int width, int height);
transcode_encode_setup(enum transcode_profile profile, struct media_quality *quality, struct decode_ctx *src_ctx, off_t *est_size, int width, int height);
struct transcode_ctx *
transcode_setup(enum transcode_profile profile, enum data_kind data_kind, const char *path, uint32_t song_length, off_t *est_size);
transcode_setup(enum transcode_profile profile, struct media_quality *quality, enum data_kind data_kind, const char *path, uint32_t song_length, off_t *est_size);
struct decode_ctx *
transcode_decode_setup_raw(enum transcode_profile profile);
transcode_decode_setup_raw(enum transcode_profile profile, struct media_quality *quality);
int
transcode_needed(const char *user_agent, const char *client_codecs, char *file_codectype);
@ -113,14 +108,11 @@ transcode(struct evbuffer *evbuf, int *icy_timer, struct transcode_ctx *ctx, int
* @in data Buffer with raw data
* @in size Size of buffer
* @in nsamples Number of samples in the buffer
* @in sample_rate
* Sample rate
* @in bits_per_sample
* BPS must be either 16 or 24
* @in quality Sample rate, bits per sample and channels
* @return Opaque pointer to frame if OK, otherwise NULL
*/
transcode_frame *
transcode_frame_new(void *data, size_t size, int nsamples, int sample_rate, int bits_per_sample);
transcode_frame_new(void *data, size_t size, int nsamples, struct media_quality *quality);
void
transcode_frame_free(transcode_frame *frame);