mirror of https://github.com/FFmpeg/FFmpeg.git
Originally committed as revision 23568 to svn://svn.ffmpeg.org/ffmpeg/trunkoldabi
parent
108caaaa60
commit
c1b85795cb
5 changed files with 0 additions and 477 deletions
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/*
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* BeOS audio play interface |
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* Copyright (c) 2000, 2001 Fabrice Bellard |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <signal.h> |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include <sys/time.h> |
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#include <Application.h> |
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#include <SoundPlayer.h> |
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extern "C" { |
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#include "libavformat/avformat.h" |
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} |
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#if HAVE_BSOUNDRECORDER |
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#include <SoundRecorder.h> |
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using namespace BPrivate::Media::Experimental; |
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#endif |
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/* enable performance checks */ |
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//#define PERF_CHECK
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/* enable Media Kit latency checks */ |
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//#define LATENCY_CHECK
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#define AUDIO_BLOCK_SIZE 4096 |
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#define AUDIO_BLOCK_COUNT 8 |
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#define AUDIO_BUFFER_SIZE (AUDIO_BLOCK_SIZE*AUDIO_BLOCK_COUNT) |
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typedef struct { |
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int fd; // UNUSED
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int sample_rate; |
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int channels; |
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int frame_size; /* in bytes ! */ |
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CodecID codec_id; |
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uint8_t buffer[AUDIO_BUFFER_SIZE]; |
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int buffer_ptr; |
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/* ring buffer */ |
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sem_id input_sem; |
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int input_index; |
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sem_id output_sem; |
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int output_index; |
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BSoundPlayer *player; |
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#if HAVE_BSOUNDRECORDER |
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BSoundRecorder *recorder; |
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#endif |
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int has_quit; /* signal callbacks not to wait */ |
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volatile bigtime_t starve_time; |
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} AudioData; |
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static thread_id main_thid; |
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static thread_id bapp_thid; |
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static int own_BApp_created = 0; |
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static int refcount = 0; |
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/* create the BApplication and Run() it */ |
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static int32 bapp_thread(void *arg) |
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{ |
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new BApplication("application/x-vnd.ffmpeg"); |
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own_BApp_created = 1; |
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be_app->Run(); |
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/* kill the process group */ |
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// kill(0, SIGINT);
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// kill(main_thid, SIGHUP);
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return B_OK; |
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} |
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/* create the BApplication only if needed */ |
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static void create_bapp_if_needed(void) |
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{ |
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if (refcount++ == 0) { |
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/* needed by libmedia */ |
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if (be_app == NULL) { |
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bapp_thid = spawn_thread(bapp_thread, "ffmpeg BApplication", B_NORMAL_PRIORITY, NULL); |
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resume_thread(bapp_thid); |
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while (!own_BApp_created) |
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snooze(50000); |
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} |
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} |
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} |
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static void destroy_bapp_if_needed(void) |
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{ |
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if (--refcount == 0 && own_BApp_created) { |
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be_app->Lock(); |
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be_app->Quit(); |
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be_app = NULL; |
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} |
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} |
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/* called back by BSoundPlayer */ |
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static void audioplay_callback(void *cookie, void *buffer, size_t bufferSize, const media_raw_audio_format &format) |
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{ |
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AudioData *s; |
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size_t len, amount; |
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unsigned char *buf = (unsigned char *)buffer; |
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s = (AudioData *)cookie; |
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if (s->has_quit) |
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return; |
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while (bufferSize > 0) { |
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#ifdef PERF_CHECK |
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bigtime_t t; |
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t = system_time(); |
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#endif |
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len = MIN(AUDIO_BLOCK_SIZE, bufferSize); |
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if (acquire_sem_etc(s->output_sem, len, B_CAN_INTERRUPT, 0LL) < B_OK) { |
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s->has_quit = 1; |
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s->player->SetHasData(false); |
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return; |
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} |
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amount = MIN(len, (AUDIO_BUFFER_SIZE - s->output_index)); |
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memcpy(buf, &s->buffer[s->output_index], amount); |
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s->output_index += amount; |
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if (s->output_index >= AUDIO_BUFFER_SIZE) { |
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s->output_index %= AUDIO_BUFFER_SIZE; |
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memcpy(buf + amount, &s->buffer[s->output_index], len - amount); |
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s->output_index += len-amount; |
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s->output_index %= AUDIO_BUFFER_SIZE; |
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} |
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release_sem_etc(s->input_sem, len, 0); |
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#ifdef PERF_CHECK |
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t = system_time() - t; |
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s->starve_time = MAX(s->starve_time, t); |
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#endif |
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buf += len; |
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bufferSize -= len; |
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} |
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} |
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#if HAVE_BSOUNDRECORDER |
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/* called back by BSoundRecorder */ |
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static void audiorecord_callback(void *cookie, bigtime_t timestamp, void *buffer, size_t bufferSize, const media_multi_audio_format &format) |
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{ |
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AudioData *s; |
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size_t len, amount; |
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unsigned char *buf = (unsigned char *)buffer; |
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s = (AudioData *)cookie; |
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if (s->has_quit) |
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return; |
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while (bufferSize > 0) { |
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len = MIN(bufferSize, AUDIO_BLOCK_SIZE); |
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//printf("acquire_sem(input, %d)\n", len);
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if (acquire_sem_etc(s->input_sem, len, B_CAN_INTERRUPT, 0LL) < B_OK) { |
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s->has_quit = 1; |
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return; |
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} |
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amount = MIN(len, (AUDIO_BUFFER_SIZE - s->input_index)); |
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memcpy(&s->buffer[s->input_index], buf, amount); |
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s->input_index += amount; |
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if (s->input_index >= AUDIO_BUFFER_SIZE) { |
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s->input_index %= AUDIO_BUFFER_SIZE; |
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memcpy(&s->buffer[s->input_index], buf + amount, len - amount); |
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s->input_index += len - amount; |
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} |
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release_sem_etc(s->output_sem, len, 0); |
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//printf("release_sem(output, %d)\n", len);
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buf += len; |
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bufferSize -= len; |
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} |
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} |
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#endif |
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static int audio_open(AudioData *s, int is_output, const char *audio_device) |
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{ |
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int p[2]; |
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int ret; |
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media_raw_audio_format format; |
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media_multi_audio_format iformat; |
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#if !HAVE_BSOUNDRECORDER |
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if (!is_output) |
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return AVERROR(EIO); /* not for now */ |
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#endif |
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s->input_sem = create_sem(AUDIO_BUFFER_SIZE, "ffmpeg_ringbuffer_input"); |
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if (s->input_sem < B_OK) |
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return AVERROR(EIO); |
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s->output_sem = create_sem(0, "ffmpeg_ringbuffer_output"); |
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if (s->output_sem < B_OK) { |
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delete_sem(s->input_sem); |
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return AVERROR(EIO); |
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} |
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s->input_index = 0; |
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s->output_index = 0; |
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create_bapp_if_needed(); |
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s->frame_size = AUDIO_BLOCK_SIZE; |
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/* bump up the priority (avoid realtime though) */ |
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set_thread_priority(find_thread(NULL), B_DISPLAY_PRIORITY+1); |
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#if HAVE_BSOUNDRECORDER |
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if (!is_output) { |
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bool wait_for_input = false; |
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if (audio_device && !strcmp(audio_device, "wait:")) |
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wait_for_input = true; |
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s->recorder = new BSoundRecorder(&iformat, wait_for_input, "ffmpeg input", audiorecord_callback); |
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if (wait_for_input && (s->recorder->InitCheck() == B_OK)) { |
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s->recorder->WaitForIncomingConnection(&iformat); |
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} |
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if (s->recorder->InitCheck() != B_OK || iformat.format != media_raw_audio_format::B_AUDIO_SHORT) { |
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delete s->recorder; |
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s->recorder = NULL; |
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if (s->input_sem) |
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delete_sem(s->input_sem); |
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if (s->output_sem) |
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delete_sem(s->output_sem); |
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return AVERROR(EIO); |
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} |
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s->codec_id = (iformat.byte_order == B_MEDIA_LITTLE_ENDIAN)?CODEC_ID_PCM_S16LE:CODEC_ID_PCM_S16BE; |
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s->channels = iformat.channel_count; |
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s->sample_rate = (int)iformat.frame_rate; |
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s->frame_size = iformat.buffer_size; |
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s->recorder->SetCookie(s); |
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s->recorder->SetVolume(1.0); |
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s->recorder->Start(); |
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return 0; |
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} |
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#endif |
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format = media_raw_audio_format::wildcard; |
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format.format = media_raw_audio_format::B_AUDIO_SHORT; |
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format.byte_order = B_HOST_IS_LENDIAN ? B_MEDIA_LITTLE_ENDIAN : B_MEDIA_BIG_ENDIAN; |
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format.channel_count = s->channels; |
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format.buffer_size = s->frame_size; |
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format.frame_rate = s->sample_rate; |
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s->player = new BSoundPlayer(&format, "ffmpeg output", audioplay_callback); |
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if (s->player->InitCheck() != B_OK) { |
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delete s->player; |
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s->player = NULL; |
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if (s->input_sem) |
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delete_sem(s->input_sem); |
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if (s->output_sem) |
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delete_sem(s->output_sem); |
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return AVERROR(EIO); |
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} |
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s->player->SetCookie(s); |
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s->player->SetVolume(1.0); |
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s->player->Start(); |
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s->player->SetHasData(true); |
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return 0; |
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} |
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static int audio_close(AudioData *s) |
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{ |
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if (s->input_sem) |
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delete_sem(s->input_sem); |
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if (s->output_sem) |
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delete_sem(s->output_sem); |
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s->has_quit = 1; |
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if (s->player) { |
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s->player->Stop(); |
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} |
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if (s->player) |
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delete s->player; |
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#if HAVE_BSOUNDRECORDER |
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if (s->recorder) |
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delete s->recorder; |
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#endif |
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destroy_bapp_if_needed(); |
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return 0; |
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} |
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/* sound output support */ |
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static int audio_write_header(AVFormatContext *s1) |
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{ |
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AudioData *s = (AudioData *)s1->priv_data; |
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AVStream *st; |
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int ret; |
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st = s1->streams[0]; |
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s->sample_rate = st->codec->sample_rate; |
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s->channels = st->codec->channels; |
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ret = audio_open(s, 1, NULL); |
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if (ret < 0) |
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return AVERROR(EIO); |
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return 0; |
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} |
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static int audio_write_packet(AVFormatContext *s1, AVPacket *pkt) |
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{ |
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AudioData *s = (AudioData *)s1->priv_data; |
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int len, ret; |
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const uint8_t *buf = pkt->data; |
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int size = pkt->size; |
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#ifdef LATENCY_CHECK |
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bigtime_t lat1, lat2; |
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lat1 = s->player->Latency(); |
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#endif |
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#ifdef PERF_CHECK |
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bigtime_t t = s->starve_time; |
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s->starve_time = 0; |
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printf("starve_time: %lld \n", t); |
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#endif |
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while (size > 0) { |
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int amount; |
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len = MIN(size, AUDIO_BLOCK_SIZE); |
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if (acquire_sem_etc(s->input_sem, len, B_CAN_INTERRUPT, 0LL) < B_OK) |
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return AVERROR(EIO); |
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amount = MIN(len, (AUDIO_BUFFER_SIZE - s->input_index)); |
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memcpy(&s->buffer[s->input_index], buf, amount); |
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s->input_index += amount; |
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if (s->input_index >= AUDIO_BUFFER_SIZE) { |
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s->input_index %= AUDIO_BUFFER_SIZE; |
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memcpy(&s->buffer[s->input_index], buf + amount, len - amount); |
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s->input_index += len - amount; |
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} |
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release_sem_etc(s->output_sem, len, 0); |
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buf += len; |
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size -= len; |
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} |
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#ifdef LATENCY_CHECK |
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lat2 = s->player->Latency(); |
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printf("#### BSoundPlayer::Latency(): before= %lld, after= %lld\n", lat1, lat2); |
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#endif |
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return 0; |
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} |
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static int audio_write_trailer(AVFormatContext *s1) |
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{ |
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AudioData *s = (AudioData *)s1->priv_data; |
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audio_close(s); |
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return 0; |
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} |
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/* grab support */ |
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static int audio_read_header(AVFormatContext *s1, AVFormatParameters *ap) |
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{ |
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AudioData *s = (AudioData *)s1->priv_data; |
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AVStream *st; |
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int ret; |
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if (!ap || ap->sample_rate <= 0 || ap->channels <= 0) |
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return -1; |
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st = av_new_stream(s1, 0); |
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if (!st) { |
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return AVERROR(ENOMEM); |
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} |
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s->sample_rate = ap->sample_rate; |
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s->channels = ap->channels; |
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ret = audio_open(s, 0, s1->filename); |
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if (ret < 0) { |
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av_free(st); |
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return AVERROR(EIO); |
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} |
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/* take real parameters */ |
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st->codec->codec_type = AVMEDIA_TYPE_AUDIO; |
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st->codec->codec_id = s->codec_id; |
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st->codec->sample_rate = s->sample_rate; |
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st->codec->channels = s->channels; |
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return 0; |
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av_set_pts_info(st, 48, 1, 1000000); /* 48 bits pts in us */ |
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} |
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static int audio_read_packet(AVFormatContext *s1, AVPacket *pkt) |
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{ |
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AudioData *s = (AudioData *)s1->priv_data; |
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int size; |
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size_t len, amount; |
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unsigned char *buf; |
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status_t err; |
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if (av_new_packet(pkt, s->frame_size) < 0) |
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return AVERROR(EIO); |
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buf = (unsigned char *)pkt->data; |
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size = pkt->size; |
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while (size > 0) { |
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len = MIN(AUDIO_BLOCK_SIZE, size); |
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//printf("acquire_sem(output, %d)\n", len);
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while ((err=acquire_sem_etc(s->output_sem, len, B_CAN_INTERRUPT, 0LL)) == B_INTERRUPTED); |
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if (err < B_OK) { |
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av_free_packet(pkt); |
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return AVERROR(EIO); |
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} |
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amount = MIN(len, (AUDIO_BUFFER_SIZE - s->output_index)); |
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memcpy(buf, &s->buffer[s->output_index], amount); |
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s->output_index += amount; |
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if (s->output_index >= AUDIO_BUFFER_SIZE) { |
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s->output_index %= AUDIO_BUFFER_SIZE; |
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memcpy(buf + amount, &s->buffer[s->output_index], len - amount); |
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s->output_index += len-amount; |
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s->output_index %= AUDIO_BUFFER_SIZE; |
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} |
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release_sem_etc(s->input_sem, len, 0); |
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//printf("release_sem(input, %d)\n", len);
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buf += len; |
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size -= len; |
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} |
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//XXX: add pts info
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return 0; |
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} |
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static int audio_read_close(AVFormatContext *s1) |
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{ |
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AudioData *s = (AudioData *)s1->priv_data; |
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audio_close(s); |
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return 0; |
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} |
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static AVInputFormat audio_beos_demuxer = { |
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"audio_beos", |
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NULL_IF_CONFIG_SMALL("audio grab and output"), |
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sizeof(AudioData), |
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NULL, |
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audio_read_header, |
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audio_read_packet, |
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audio_read_close, |
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NULL, |
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NULL, |
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AVFMT_NOFILE, |
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}; |
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AVOutputFormat audio_beos_muxer = { |
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"audio_beos", |
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NULL_IF_CONFIG_SMALL("audio grab and output"), |
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"", |
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"", |
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sizeof(AudioData), |
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#if HAVE_BIGENDIAN |
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CODEC_ID_PCM_S16BE, |
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#else |
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CODEC_ID_PCM_S16LE, |
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#endif |
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CODEC_ID_NONE, |
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audio_write_header, |
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audio_write_packet, |
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audio_write_trailer, |
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AVFMT_NOFILE, |
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}; |
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extern "C" { |
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int audio_init(void) |
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{ |
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main_thid = find_thread(NULL); |
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av_register_input_format(&audio_beos_demuxer); |
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av_register_output_format(&audio_beos_muxer); |
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return 0; |
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} |
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} // "C"
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