From 68314c33e9f2b4e36c7803193d0375a10b2d082c Mon Sep 17 00:00:00 2001 From: Max Kellermann Date: Mon, 16 Feb 2009 19:31:11 +0100 Subject: faad: no CamelCase Renamed functions and variables. --- src/decoder/faad_plugin.c | 319 +++++++++++++++++++++++----------------------- 1 file changed, 159 insertions(+), 160 deletions(-) (limited to 'src') diff --git a/src/decoder/faad_plugin.c b/src/decoder/faad_plugin.c index 3fd81fe1e..a8e4a6045 100644 --- a/src/decoder/faad_plugin.c +++ b/src/decoder/faad_plugin.c @@ -30,58 +30,60 @@ #define G_LOG_DOMAIN "aac" /* all code here is either based on or copied from FAAD2's frontend code */ -typedef struct { +struct faad_buffer { struct decoder *decoder; - struct input_stream *inStream; - size_t bytesIntoBuffer; - size_t bytesConsumed; - unsigned char buffer[FAAD_MIN_STREAMSIZE * AAC_MAX_CHANNELS]; -} AacBuffer; + struct input_stream *is; + size_t length; + size_t consumed; + unsigned char data[FAAD_MIN_STREAMSIZE * AAC_MAX_CHANNELS]; +}; -static void aac_buffer_shift(AacBuffer * b, size_t length) +static void +aac_buffer_shift(struct faad_buffer *b, size_t length) { - assert(length >= b->bytesConsumed); - assert(length <= b->bytesConsumed + b->bytesIntoBuffer); + assert(length >= b->consumed); + assert(length <= b->consumed + b->length); - memmove(b->buffer, b->buffer + length, - b->bytesConsumed + b->bytesIntoBuffer - length); + memmove(b->data, b->data + length, + b->consumed + b->length - length); - length -= b->bytesConsumed; - b->bytesConsumed = 0; - b->bytesIntoBuffer -= length; + length -= b->consumed; + b->consumed = 0; + b->length -= length; } -static void fillAacBuffer(AacBuffer * b) +static void +faad_buffer_fill(struct faad_buffer *b) { size_t rest, bread; - if (b->bytesConsumed > 0) - aac_buffer_shift(b, b->bytesConsumed); + if (b->consumed > 0) + aac_buffer_shift(b, b->consumed); - rest = sizeof(b->buffer) - b->bytesIntoBuffer; + rest = sizeof(b->data) - b->length; if (rest == 0) /* buffer already full */ return; - bread = decoder_read(b->decoder, b->inStream, - (void *)(b->buffer + b->bytesIntoBuffer), - rest); - b->bytesIntoBuffer += bread; + bread = decoder_read(b->decoder, b->is, + b->data + b->length, rest); + b->length += bread; - if ((b->bytesIntoBuffer > 3 && memcmp(b->buffer, "TAG", 3) == 0) || - (b->bytesIntoBuffer > 11 && - memcmp(b->buffer, "LYRICSBEGIN", 11) == 0) || - (b->bytesIntoBuffer > 8 && memcmp(b->buffer, "APETAGEX", 8) == 0)) - b->bytesIntoBuffer = 0; + if ((b->length > 3 && memcmp(b->data, "TAG", 3) == 0) || + (b->length > 11 && + memcmp(b->data, "LYRICSBEGIN", 11) == 0) || + (b->length > 8 && memcmp(b->data, "APETAGEX", 8) == 0)) + b->length = 0; } -static void advanceAacBuffer(AacBuffer * b, size_t bytes) +static void +faad_buffer_consume(struct faad_buffer *b, size_t bytes) { - b->bytesConsumed = bytes; - b->bytesIntoBuffer -= bytes; + b->consumed = bytes; + b->length -= bytes; } -static const unsigned adtsSampleRates[] = +static const unsigned adts_sample_rates[] = { 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350, 0, 0, 0 }; @@ -90,35 +92,37 @@ static const unsigned adtsSampleRates[] = * Check whether the buffer head is an AAC frame, and return the frame * length. Returns 0 if it is not a frame. */ -static size_t adts_check_frame(AacBuffer * b) +static size_t +adts_check_frame(struct faad_buffer *b) { - if (b->bytesIntoBuffer <= 7) + if (b->length <= 7) return 0; /* check syncword */ - if (!((b->buffer[0] == 0xFF) && ((b->buffer[1] & 0xF6) == 0xF0))) + if (!((b->data[0] == 0xFF) && ((b->data[1] & 0xF6) == 0xF0))) return 0; - return (((unsigned int)b->buffer[3] & 0x3) << 11) | - (((unsigned int)b->buffer[4]) << 3) | - (b->buffer[5] >> 5); + return (((unsigned int)b->data[3] & 0x3) << 11) | + (((unsigned int)b->data[4]) << 3) | + (b->data[5] >> 5); } /** * Find the next AAC frame in the buffer. Returns 0 if no frame is * found or if not enough data is available. */ -static size_t adts_find_frame(AacBuffer * b) +static size_t +adts_find_frame(struct faad_buffer *b) { const unsigned char *p; size_t frame_length; - while ((p = memchr(b->buffer, 0xff, b->bytesIntoBuffer)) != NULL) { + while ((p = memchr(b->data, 0xff, b->length)) != NULL) { /* discard data before 0xff */ - if (p > b->buffer) - aac_buffer_shift(b, p - b->buffer); + if (p > b->data) + aac_buffer_shift(b, p - b->data); - if (b->bytesIntoBuffer <= 7) + if (b->length <= 7) /* not enough data yet */ return 0; @@ -134,52 +138,52 @@ static size_t adts_find_frame(AacBuffer * b) } /* nothing at all; discard the whole buffer */ - aac_buffer_shift(b, b->bytesIntoBuffer); + aac_buffer_shift(b, b->length); return 0; } -static void adtsParse(AacBuffer * b, float *length) +static void +adtsParse(struct faad_buffer *b, float *length) { - unsigned int frames, frameLength; + unsigned int frames, frame_length; unsigned sample_rate = 0; - float framesPerSec; + float frames_per_second; /* Read all frames to ensure correct time and bitrate */ for (frames = 0;; frames++) { - fillAacBuffer(b); + faad_buffer_fill(b); - frameLength = adts_find_frame(b); - if (frameLength > 0) { + frame_length = adts_find_frame(b); + if (frame_length > 0) { if (frames == 0) { - sample_rate = adtsSampleRates[(b-> - buffer[2] & 0x3c) - >> 2]; + sample_rate = adts_sample_rates[(b->data[2] & 0x3c) >> 2]; } - if (frameLength > b->bytesIntoBuffer) + if (frame_length > b->length) break; - advanceAacBuffer(b, frameLength); + faad_buffer_consume(b, frame_length); } else break; } - framesPerSec = (float)sample_rate / 1024.0; - if (framesPerSec > 0) - *length = (float)frames / framesPerSec; + frames_per_second = (float)sample_rate / 1024.0; + if (frames_per_second > 0) + *length = (float)frames / frames_per_second; } static void -initAacBuffer(AacBuffer * b, struct decoder *decoder, - struct input_stream *inStream) +faad_buffer_init(struct faad_buffer *buffer, struct decoder *decoder, + struct input_stream *is) { - memset(b, 0, sizeof(AacBuffer)); + memset(buffer, 0, sizeof(*buffer)); - b->decoder = decoder; - b->inStream = inStream; + buffer->decoder = decoder; + buffer->is = is; } -static void aac_parse_header(AacBuffer * b, float *length) +static void +aac_parse_header(struct faad_buffer *b, float *length) { size_t fileread; size_t tagsize; @@ -187,67 +191,58 @@ static void aac_parse_header(AacBuffer * b, float *length) if (length) *length = -1; - fileread = b->inStream->size >= 0 ? b->inStream->size : 0; + fileread = b->is->size >= 0 ? b->is->size : 0; - fillAacBuffer(b); + faad_buffer_fill(b); tagsize = 0; - if (b->bytesIntoBuffer >= 10 && !memcmp(b->buffer, "ID3", 3)) { - tagsize = (b->buffer[6] << 21) | (b->buffer[7] << 14) | - (b->buffer[8] << 7) | (b->buffer[9] << 0); + if (b->length >= 10 && !memcmp(b->data, "ID3", 3)) { + tagsize = (b->data[6] << 21) | (b->data[7] << 14) | + (b->data[8] << 7) | (b->data[9] << 0); tagsize += 10; - advanceAacBuffer(b, tagsize); - fillAacBuffer(b); + faad_buffer_consume(b, tagsize); + faad_buffer_fill(b); } if (length == NULL) return; - if (b->inStream->seekable && - b->bytesIntoBuffer >= 2 && - (b->buffer[0] == 0xFF) && ((b->buffer[1] & 0xF6) == 0xF0)) { + if (b->is->seekable && b->length >= 2 && + (b->data[0] == 0xFF) && ((b->data[1] & 0xF6) == 0xF0)) { adtsParse(b, length); - input_stream_seek(b->inStream, tagsize, SEEK_SET); + input_stream_seek(b->is, tagsize, SEEK_SET); - b->bytesIntoBuffer = 0; - b->bytesConsumed = 0; + b->length = 0; + b->consumed = 0; - fillAacBuffer(b); - } else if (memcmp(b->buffer, "ADIF", 4) == 0) { - unsigned bitRate; - size_t skipSize = (b->buffer[4] & 0x80) ? 9 : 0; + faad_buffer_fill(b); + } else if (memcmp(b->data, "ADIF", 4) == 0) { + unsigned bit_rate; + size_t skip_size = (b->data[4] & 0x80) ? 9 : 0; - if (8 + skipSize > b->bytesIntoBuffer) + if (8 + skip_size > b->length) /* not enough data yet; skip parsing this header */ return; - bitRate = - ((unsigned int)(b-> - buffer[4 + - skipSize] & 0x0F) << 19) | ((unsigned - int)b-> - buffer[5 - + - skipSize] - << 11) | - ((unsigned int)b-> - buffer[6 + skipSize] << 3) | ((unsigned int)b->buffer[7 + - skipSize] - & 0xE0); - - if (fileread != 0 && bitRate != 0) - *length = fileread * 8.0 / bitRate; + bit_rate = ((unsigned)(b->data[4 + skip_size] & 0x0F) << 19) | + ((unsigned)b->data[5 + skip_size] << 11) | + ((unsigned)b->data[6 + skip_size] << 3) | + ((unsigned)b->data[7 + skip_size] & 0xE0); + + if (fileread != 0 && bit_rate != 0) + *length = fileread * 8.0 / bit_rate; else *length = fileread; } } -static float getAacFloatTotalTime(const char *file) +static float +faad_get_file_time_float(const char *file) { - AacBuffer b; + struct faad_buffer buffer; float length; faacDecHandle decoder; faacDecConfigurationPtr config; @@ -261,14 +256,14 @@ static float getAacFloatTotalTime(const char *file) uint32_t *sample_rate_r = &sample_rate; #endif unsigned char channels; - struct input_stream inStream; + struct input_stream is; long bread; - if (!input_stream_open(&inStream, file)) + if (!input_stream_open(&is, file)) return -1; - initAacBuffer(&b, NULL, &inStream); - aac_parse_header(&b, &length); + faad_buffer_init(&buffer, NULL, &is); + aac_parse_header(&buffer, &length); if (length < 0) { decoder = faacDecOpen(); @@ -277,12 +272,13 @@ static float getAacFloatTotalTime(const char *file) config->outputFormat = FAAD_FMT_16BIT; faacDecSetConfiguration(decoder, config); - fillAacBuffer(&b); + faad_buffer_fill(&buffer); #ifdef HAVE_FAAD_BUFLEN_FUNCS - bread = faacDecInit(decoder, b.buffer, b.bytesIntoBuffer, + bread = faacDecInit(decoder, buffer.data, buffer.length, sample_rate_r, &channels); #else - bread = faacDecInit(decoder, b.buffer, sample_rate_r, &channels); + bread = faacDecInit(decoder, buffer.data, + sample_rate_r, &channels); #endif if (bread >= 0 && sample_rate > 0 && channels > 0) length = 0; @@ -290,29 +286,30 @@ static float getAacFloatTotalTime(const char *file) faacDecClose(decoder); } - input_stream_close(&inStream); + input_stream_close(&is); return length; } -static int getAacTotalTime(const char *file) +static int +faad_get_file_time(const char *file) { int file_time = -1; float length; - if ((length = getAacFloatTotalTime(file)) >= 0) + if ((length = faad_get_file_time_float(file)) >= 0) file_time = length + 0.5; return file_time; } static void -aac_stream_decode(struct decoder *mpd_decoder, struct input_stream *inStream) +aac_stream_decode(struct decoder *mpd_decoder, struct input_stream *is) { float file_time; - float totalTime = 0; + float total_time = 0; faacDecHandle decoder; - faacDecFrameInfo frameInfo; + faacDecFrameInfo frame_info; faacDecConfigurationPtr config; long bread; uint32_t sample_rate; @@ -325,16 +322,16 @@ aac_stream_decode(struct decoder *mpd_decoder, struct input_stream *inStream) uint32_t *sample_rate_r = &sample_rate; #endif unsigned char channels; - unsigned int sampleCount; - char *sampleBuffer; - size_t sampleBufferLen; - uint16_t bitRate = 0; - AacBuffer b; + unsigned long sample_count; + const void *decoded; + size_t decoded_length; + uint16_t bit_rate = 0; + struct faad_buffer buffer; bool initialized = false; enum decoder_command cmd; - initAacBuffer(&b, mpd_decoder, inStream); - aac_parse_header(&b, &totalTime); + faad_buffer_init(&buffer, mpd_decoder, is); + aac_parse_header(&buffer, &total_time); decoder = faacDecOpen(); @@ -348,19 +345,19 @@ aac_stream_decode(struct decoder *mpd_decoder, struct input_stream *inStream) #endif faacDecSetConfiguration(decoder, config); - while (b.bytesIntoBuffer < sizeof(b.buffer) && - !input_stream_eof(b.inStream) && + while (buffer.length < sizeof(buffer.data) && + !input_stream_eof(buffer.is) && decoder_get_command(mpd_decoder) == DECODE_COMMAND_NONE) { - fillAacBuffer(&b); - adts_find_frame(&b); - fillAacBuffer(&b); + faad_buffer_fill(&buffer); + adts_find_frame(&buffer); + faad_buffer_fill(&buffer); } #ifdef HAVE_FAAD_BUFLEN_FUNCS - bread = faacDecInit(decoder, b.buffer, b.bytesIntoBuffer, + bread = faacDecInit(decoder, buffer.data, buffer.length, sample_rate_r, &channels); #else - bread = faacDecInit(decoder, b.buffer, sample_rate_r, &channels); + bread = faacDecInit(decoder, buffer.data, sample_rate_r, &channels); #endif if (bread < 0) { g_warning("Error not a AAC stream.\n"); @@ -370,36 +367,37 @@ aac_stream_decode(struct decoder *mpd_decoder, struct input_stream *inStream) file_time = 0.0; - advanceAacBuffer(&b, bread); + faad_buffer_consume(&buffer, bread); do { - fillAacBuffer(&b); - adts_find_frame(&b); - fillAacBuffer(&b); + faad_buffer_fill(&buffer); + adts_find_frame(&buffer); + faad_buffer_fill(&buffer); - if (b.bytesIntoBuffer == 0) + if (buffer.length == 0) break; #ifdef HAVE_FAAD_BUFLEN_FUNCS - sampleBuffer = faacDecDecode(decoder, &frameInfo, b.buffer, - b.bytesIntoBuffer); + decoded = faacDecDecode(decoder, &frame_info, + buffer.data, buffer.length); #else - sampleBuffer = faacDecDecode(decoder, &frameInfo, b.buffer); + decoded = faacDecDecode(decoder, &frame_info, + buffer.data); #endif - if (frameInfo.error > 0) { + if (frame_info.error > 0) { g_warning("error decoding AAC stream: %s\n", - faacDecGetErrorMessage(frameInfo.error)); + faacDecGetErrorMessage(frame_info.error)); break; } #ifdef HAVE_FAACDECFRAMEINFO_SAMPLERATE - sample_rate = frameInfo.samplerate; + sample_rate = frame_info.samplerate; #endif if (!initialized) { const struct audio_format audio_format = { .bits = 16, - .channels = frameInfo.channels, + .channels = frame_info.channels, .sample_rate = sample_rate, }; @@ -409,28 +407,27 @@ aac_stream_decode(struct decoder *mpd_decoder, struct input_stream *inStream) } decoder_initialized(mpd_decoder, &audio_format, - false, totalTime); + false, total_time); initialized = true; } - advanceAacBuffer(&b, frameInfo.bytesconsumed); + faad_buffer_consume(&buffer, frame_info.bytesconsumed); - sampleCount = (unsigned long)(frameInfo.samples); - - if (sampleCount > 0) { - bitRate = frameInfo.bytesconsumed * 8.0 * - frameInfo.channels * sample_rate / - frameInfo.samples / 1000 + 0.5; + sample_count = (unsigned long)frame_info.samples; + if (sample_count > 0) { + bit_rate = frame_info.bytesconsumed * 8.0 * + frame_info.channels * sample_rate / + frame_info.samples / 1000 + 0.5; file_time += - (float)(frameInfo.samples) / frameInfo.channels / + (float)(frame_info.samples) / frame_info.channels / sample_rate; } - sampleBufferLen = sampleCount * 2; + decoded_length = sample_count * 2; - cmd = decoder_data(mpd_decoder, inStream, sampleBuffer, - sampleBufferLen, file_time, - bitRate, NULL); + cmd = decoder_data(mpd_decoder, is, decoded, + decoded_length, file_time, + bit_rate, NULL); if (cmd == DECODE_COMMAND_SEEK) decoder_seek_error(mpd_decoder); } while (cmd != DECODE_COMMAND_STOP); @@ -438,14 +435,14 @@ aac_stream_decode(struct decoder *mpd_decoder, struct input_stream *inStream) faacDecClose(decoder); } -static struct tag *aacTagDup(const char *file) +static struct tag * +faad_tag_dup(const char *file) { - int file_time = getAacTotalTime(file); + int file_time = faad_get_file_time(file); struct tag *tag; if (file_time < 0) { - g_debug("aacTagDup: Failed to get total song time from: %s\n", - file); + g_debug("Failed to get total song time from: %s", file); return NULL; } @@ -454,13 +451,15 @@ static struct tag *aacTagDup(const char *file) return tag; } -static const char *const aac_suffixes[] = { "aac", NULL }; -static const char *const aac_mimeTypes[] = { "audio/aac", "audio/aacp", NULL }; +static const char *const faad_suffixes[] = { "aac", NULL }; +static const char *const faad_mime_types[] = { + "audio/aac", "audio/aacp", NULL +}; const struct decoder_plugin faad_decoder_plugin = { .name = "faad", .stream_decode = aac_stream_decode, - .tag_dup = aacTagDup, - .suffixes = aac_suffixes, - .mime_types = aac_mimeTypes + .tag_dup = faad_tag_dup, + .suffixes = faad_suffixes, + .mime_types = faad_mime_types, }; -- cgit v1.2.3