Add audio raw RTP file playback capability #1993
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Ok. A few comments for you to consider. But I can merge this as is if you prefer.
I do wonder though if this couldn't have been achieved through some other means, for example by telling ffmpeg (libav...) that it is in fact opening a raw file. It does support both raw µ and A law input files, and for codecs that require framing (Opus...) it will need some more sophisticated processing anyway.
| @@ -1104,6 +1104,57 @@ static int media_player_find_file_begin(struct media_player *mp) { | |||
| static bool media_player_read_packet(struct media_player *mp) { | |||
| if (!mp->coder.fmtctx) | |||
| return true; | |||
| // Handle raw RTP file playback | |||
| if (mp->coder.audio_raw_rtp_mode) { | |||
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Since media_player_read_packet is already used as run_func function pointer, this whole block would lend itself to also be its own function and then be used as run_func, to avoid the if/else
| // Set codec parameters based on input | ||
| if (opts.audio_raw_rtp_codec.len == 4 && strncasecmp(opts.audio_raw_rtp_codec.s, "PCMU", 4) == 0) { | ||
| mp->coder.audio_raw_rtp_codec = AV_CODEC_ID_PCM_MULAW; | ||
| mp->coder.audio_raw_rtp_frame_size = 160; // 20ms frames |
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Maybe make this dependent on the ptime?
| long file_size = ftell(f); | ||
| fseek(f, 0, SEEK_SET); | ||
| // Read entire file into memory | ||
| char *file_data = malloc(file_size); |
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We tend to use g_malloc and g_free in the code.
Also glib provides a convenient g_file_get_contents() helper to do just this.
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| // Simulate packet timing (20ms per frame) | ||
| mp->coder.pkt->pts = mp->last_frame_ts; | ||
| mp->coder.pkt->duration = 160; |
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This should probably depend on either ptime or the frame size variable?
| fclose(f); | ||
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| // Store in player context | ||
| mp->coder.audio_raw_rtp_data.s = file_data; |
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Actually I think this is never freed? So that definitely needs to be fixed
Hi,
This PR adds the capability to play audio directly from raw RTP payload file to improve performance .
New Command Parameters
The existing play_media NG command is extended with two new parameters:
audio-raw_rtp_file: Path to the file containing raw RTP payloads (no headers).
audio-raw_rtp_codec: Codec of the payloads (e.g., PCMU, PCMA).
Example Usage:
bash
curl -X POST http://localhost:2225/ng-plain -H "Content-Type: application/json" -d '{
"command": "play media",
"audio-raw-rtp-file": "/path/to/file.raw",
"audio-raw-rtp-codec":"PCMU",
"call-id": "123abc",
"from-tag": "456def"
}'
Codec Support: Initially supports G.711 PCMU and PCMA
All existing functionality remains unchanged. The implementation includes proper error handling and memory management.